From owner-freebsd-usb@FreeBSD.ORG Sun Aug 19 11:13:46 2007 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E56C316A418 for ; Sun, 19 Aug 2007 11:13:46 +0000 (UTC) (envelope-from paulburkhardt@verizon.net) Received: from vms048pub.verizon.net (vms048pub.verizon.net [206.46.252.48]) by mx1.freebsd.org (Postfix) with ESMTP id C6BA113C461 for ; Sun, 19 Aug 2007 11:13:46 +0000 (UTC) (envelope-from paulburkhardt@verizon.net) Received: from PaulStudy ([70.109.172.113]) by vms048.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JN0001CPPUPVLB3@vms048.mailsrvcs.net> for freebsd-usb@freebsd.org; Sun, 19 Aug 2007 06:13:46 -0500 (CDT) Date: Sun, 19 Aug 2007 07:13:35 -0400 From: "Paul Burkhardt" To: Message-id: <009501c7e251$fcf37330$0201a8c0@PaulStudy> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Mailer: Microsoft Office Outlook 11 Thread-index: AcfiUfwx0UN5tgR/TPO9QTKksQCiWA== Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: usb/99419: external usb harddrive slow to accept X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Aug 2007 11:13:47 -0000 Hi, I'm trying to locate some instructions on how to dismantle the wd25001032 model external Drive. Western Digital has been no help whatsoever. I noticed your posting (see below) and was wondering if you have any idea where I could find this information. http://lists.freebsd.org/pipermail/freebsd-usb/2006-June/002350.html Thanks in advance for your response. Regards, Paul From owner-freebsd-usb@FreeBSD.ORG Sun Aug 19 16:21:48 2007 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 49F2016A41A; Sun, 19 Aug 2007 16:21:48 +0000 (UTC) (envelope-from SRS0=P54RWd=NQ=vvelox.net=v.velox@yourhostingaccount.com) Received: from mailout15.yourhostingaccount.com (mailout15.yourhostingaccount.com [65.254.253.125]) by mx1.freebsd.org (Postfix) with ESMTP id 1AAB813C47E; Sun, 19 Aug 2007 16:21:48 +0000 (UTC) (envelope-from SRS0=P54RWd=NQ=vvelox.net=v.velox@yourhostingaccount.com) Received: from mailscan05.yourhostingaccount.com ([10.1.15.5] helo=mailscan05.yourhostingaccount.com) by mailout15.yourhostingaccount.com with esmtp (Exim) id 1IMn3C-0004Bq-Ny; Sun, 19 Aug 2007 11:50:50 -0400 Received: from impout03.yourhostingaccount.com ([10.1.55.3] helo=impout03.yourhostingaccount.com) by mailscan05.yourhostingaccount.com with esmtp (Exim) id 1IMn3C-0004Nr-Jv; Sun, 19 Aug 2007 11:50:50 -0400 Received: from authsmtp09.yourhostingaccount.com ([10.1.18.9]) by impout03.yourhostingaccount.com with NO UCE id drqq1X0010BkWne0000000; Sun, 19 Aug 2007 11:50:50 -0400 X-EN-OrigOutIP: 10.1.18.9 X-EN-IMPSID: drqq1X0010BkWne0000000 Received: from cpe-24-93-100-44.columbus.res.rr.com ([24.93.100.44] helo=vixen42) by authsmtp09.yourhostingaccount.com with esmtpa (Exim) id 1IMn3C-0007Jq-9R; Sun, 19 Aug 2007 11:50:50 -0400 Date: Sun, 19 Aug 2007 11:53:38 -0400 From: "Zane C.B." To: "G. Mirov" Message-ID: <20070819115338.64128f1b@vixen42> In-Reply-To: References: X-Mailer: Claws Mail 2.10.0 (GTK+ 2.10.14; i386-portbld-freebsd6.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-EN-UserInfo: 0d1ca1697cdb7a831d4877828571b7ab:1570f0de6936c69fef9e164fffc541bc X-EN-AuthUser: vvelox2 Sender: "Zane C.B." X-EN-OrigIP: 24.93.100.44 X-EN-OrigHost: cpe-24-93-100-44.columbus.res.rr.com Cc: freebsd-usb@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: Recommended IDE-to-USB bridge chipsets and hard drive enclosures? X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Aug 2007 16:21:48 -0000 On Mon, 13 Aug 2007 18:17:46 +0200 "G. Mirov" wrote: > Hi All, > > which of the supported IDE-to-USB (USB-to-IDE) bridge chipsets work > best with FreeBSD 4.x and 6.x? > > Which external IDE-to-USB hard drive enclosures (caddies, cases) > would you recommend? > > Does anyone here use an Icy Box IC-351U with FreeBSD? What chipset > is it based on? > > I've been searching for information on a reliable supported chipset > with decent performance in an enclosure that does not overheat > easily, but sadly haven't found the answers I need, therefore any > recommendation from personal experience will be welcome. Thank you. As far as I know, practically any should work. You just need to have umass loaded. From owner-freebsd-usb@FreeBSD.ORG Mon Aug 20 11:08:41 2007 Return-Path: Delivered-To: freebsd-usb@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4D0A716A4F2 for ; Mon, 20 Aug 2007 11:08:41 +0000 (UTC) (envelope-from owner-bugmaster@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 37DF913C4B6 for ; Mon, 20 Aug 2007 11:08:41 +0000 (UTC) (envelope-from owner-bugmaster@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.1/8.14.1) with ESMTP id l7KB8fhm087602 for ; Mon, 20 Aug 2007 11:08:41 GMT (envelope-from owner-bugmaster@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.1/8.14.1/Submit) id l7KB8dYe087598 for freebsd-usb@FreeBSD.org; Mon, 20 Aug 2007 11:08:39 GMT (envelope-from owner-bugmaster@FreeBSD.org) Date: Mon, 20 Aug 2007 11:08:39 GMT Message-Id: <200708201108.l7KB8dYe087598@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: gnats set sender to owner-bugmaster@FreeBSD.org using -f From: FreeBSD bugmaster To: freebsd-usb@FreeBSD.org Cc: Subject: Current problem reports assigned to you X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Aug 2007 11:08:42 -0000 Current FreeBSD problem reports Critical problems S Tracker Resp. Description -------------------------------------------------------------------------------- o usb/84750 usb [hang] 6-BETA2 reboot/shutdown with root_fs on externa o usb/91629 usb usbd_abort_pipe() may result in infinite loop 2 problems total. Serious problems S Tracker Resp. Description -------------------------------------------------------------------------------- o usb/46176 usb [panic] umass causes kernel panic if device removed be o i386/46371 usb USB controller cannot be initialized on IBM Netfinity o usb/57085 usb [umass] umass0 problems, with Sony Vio/USB memory stic o bin/57255 usb usbd and multi-function devices o usb/62088 usb [usb] Logitech Cordless/Optical Mouse not working o usb/63621 usb [usb] USB MemoryStick Reader stalls/crashes system o usb/69006 usb [patch] Apple Cinema Display hangs USB ports o usb/71155 usb [usb] misbehaving usb-printer hangs processes, causes o usb/73307 usb [panic] Kernel panics on USB disconnect o usb/74771 usb [umass] mounting write-protected umass device as read/ o usb/75705 usb [panic] da0 attach / Optio S4 (with backtrace) o usb/75797 usb 5.3-STABLE(2005 1/4) detect USB headset, But can not f o usb/76395 usb USB printer does not work, usbdevs says "addr 0 should o usb/77184 usb [panic] kernel panic on USB device disconnect o usb/77294 usb [ulpcom] [panic] ucom + ulpcom panic o usb/79269 usb USB ohci da0 plug/unplug causes crashes and lockups. o usb/79287 usb [uhci] UHCI hang after interrupt transfer o usb/79524 usb printing to Minolta PagePro 1[23]xxW via USB fails wit a usb/79656 usb [usb] RHSC interrupts lost o usb/79722 usb [usb] wrong alignments in ehci.h o usb/80040 usb [hang] Use of sound mixer causes system freeze with ua o usb/80361 usb [patch] mounting of usb-stick fails o usb/80829 usb possible panic when loading USB-modules o usb/80862 usb [patch] USB locking issues: missing some Giant calls o usb/82350 usb [usb] null pointer dereference in USB stack o usb/82520 usb Reboot when USL101 connected s usb/82569 usb [usb] USB mass storage plug/unplug causes system panic o usb/82660 usb [umass] [panic] EHCI: I/O stuck in state 'physrd'/pani o usb/83563 usb [panic] Page Fault while detaching Mpman Usb device o usb/83677 usb [usb] usb controller often not detected (Sun W2100z) o usb/83756 usb [ums] [patch] Microsoft Intellimouse Explorer 4.0A doe o usb/83977 usb [ucom] [panic] ucom1: open bulk out error (addr 2): IN o usb/84326 usb [umass] Panic trying to connect SCSI tape drive via US o usb/84336 usb [usb] [reboot] instant system reboot when unmounting a o usb/86031 usb need support usb nic rt2500 in my 5.4 STABLE o usb/86767 usb [usb] [patch] bogus "slice starts beyond end of the di o usb/88743 usb [hang] USB makes kernel hang at boot (regression in 6. o usb/88966 usb [modules] kldunload ucom.ko returns "Device busy" erro o usb/89003 usb LaCie Firewire drive not properly supported under 6.0 o usb/89954 usb [usb] USB Disk driver race condition? o usb/90700 usb [umass] [panic] Kernel panic on connect/mount/use umas o usb/91238 usb [umass] USB tape unit fails to write a second tape fil o usb/91283 usb booting very slow with usb devices connection (regress o usb/91538 usb [ulpt] [patch] Unable to print to EPSON CX3500 o usb/91906 usb [hang] FreeBSD hangs while booting with USB legacy sup o usb/92052 usb [unlpt] usbd causes defunct process with busy file-han o usb/92083 usb [ural] [panic] panic using WPA on ural NIC in 6.0-RELE o usb/92142 usb SET_ADDR_FAILED and SHORT_XFER errors from usb drivers o usb/92171 usb [panic] panic unplugging Vodafone Mobile Connect (UMTS o usb/93155 usb [ulpt] /dev/ulpt0: device busy, USB printer does not w o usb/93408 usb [mouse] hw.acpi.cpu.cx_lowest=C3 on AMD Turion causes o usb/93640 usb [irq] device ehci causes interrupt storm on this MSI a o usb/93828 usb [panic] ohci causes panic on boot (HP Pavillion d4100e o usb/94166 usb btx halted with a flashcard plugged o usb/94384 usb [panic] kernel panic with usb2 hardware o usb/94717 usb [ulpt] Reading from /dev/ulpt can break work of a UHCI o usb/94813 usb [umass] mounting write-protected umass device freezes o usb/94897 usb [panic] Kernel Panic when cleanly unmounting USB disk o usb/95131 usb [install] Boot/setup process does not accept key strok o usb/95348 usb [kbd] USB keyboard unplug causes noise on screen o usb/95562 usb [umass] Write Stress in USB Mass drive causes "vinvalb o usb/95636 usb [boot] 5 minute delay at boot when using VT6205 based o usb/96120 usb [mouse] USB mouse not always detected o usb/96224 usb [usb] mount_msdosfs cause page fault in syncer process o usb/96457 usb [panic] fatback on umass = reboot o usb/97286 usb [mouse] MS Wireless Intellimouse Explorer 2.0 doesn't o usb/99431 usb [kbd] FreeBSD on MSI 6566E (Intel 845E motherboards) d o usb/101096 usb [if_ural] [panic] USB WLAN occasionally causes kernel- o usb/101448 usb [ohci] FBSD 6.1-STABLE/AMD64 crashes under heavy USB/O o usb/101752 usb [umass] [panic] 6.1-RELEASE kernel panic on usb device o usb/102066 usb [ukbd] usb keyboard and multimedia keys don't work o usb/102096 usb [patch] /usr/sbin/usbd does not handle multiple device o usb/103025 usb [usb] wrong detection of USB device for FreeBSD 6.1 an o usb/104292 usb [hang] system lockup on forced umount of usb-storage d o usb/104830 usb [umass] system crashes when copying data to umass devi o usb/105186 usb USB 2.0/ehci on FreeBSD 6.2-PRE/AMD64 crashes box o usb/106615 usb [uftdi] uftdi module does not automatically load with o usb/106648 usb [hang] USB Floppy on D1950 10 min Hang on Insert w/o F o usb/106832 usb USB HP printer is not detected by kernel when ACPI ena o usb/107248 usb [umass] [patch] scsi_da.c quirk for Cowon iAUDIO X5 MP o usb/107446 usb [umass] umass problems (usb and fw disks) o usb/107827 usb [panic] ohci_add_done addr not found o usb/107848 usb [umass] cannot access Samsung flash disk o usb/107924 usb [patch] usbd(8) does not call detach o usb/108513 usb [umass] Creative MuVo TX FM fails in 6.2-RELEASE (regr o usb/109274 usb [usb] MCP55 USB Controller fails to attach in AMD64 Cu o usb/109397 usb [panic] on boot from USB flash o usb/110856 usb [ugen] [patch] interrupt in msgs are truncated when bu o usb/110988 usb [umass] [patch] Handling of quirk IGNORE_RESIDUE is um o usb/111753 usb [uhid] [panic] Replicable system panic involving UHID o usb/112568 usb USB mode may wrong when mounting Playstation Pro o usb/112631 usb [panic] Problem with SONY DSC-S80 camera o usb/112640 usb [usb] [hang] Kernel freezes when writing a file to an o usb/113478 usb [boot] FreeBSD could not start on Core2Duo notebook fr o usb/113629 usb [ukbd] Dropped USB keyboard events on Dell Latitude D6 o usb/113672 usb [ehci] [panic] Kernel panic with AEWIN CB6971 o usb/113851 usb [boot] Unable to boot install cd from USB-CDROM o usb/113977 usb [feature request] Need a way to set mode of USB disk's o usb/114310 usb [panic] USB hub attachment panics kernel during libusb o usb/114682 usb USB media-card reader unusable o kern/114780 usb [uplcom] [panic] Panics while stress testing the uplco o usb/115298 usb Turning off USB printer panics kernel 102 problems total. Non-critical problems S Tracker Resp. Description -------------------------------------------------------------------------------- o conf/30929 usb [usb] [patch] use usbd to initialize USB ADSL modem o usb/40948 usb [usb] USB HP CDW8200 does not work o usb/48342 usb [PATCH] usbd dynamic device list. f usb/51958 usb [urio] [patch] update for urio driver o usb/52026 usb [usb] feature request: umass driver support for InSyst o usb/56095 usb [usb] [patch] QUIRK: Apacer Pen Drive fails to work o usb/59698 usb [kbd] [patch] Rework of ukbd HID to AT code translatio o usb/62257 usb [umass] card reader UCR-61S2B is only half-supported o usb/63837 usb [uhid] [patch] USB: hid_is_collection() only looks for o usb/65769 usb [usb] Call to tcflush(x, TCIFLUSH) stops input on usb- o usb/66547 usb [usb] Palm Tungsten T USB does not initialize correctl o usb/68232 usb [ugen] [patch] ugen(4) isochronous handling correction o usb/70523 usb [usb] [patch] umct sending/receiving wrong characters o usb/71280 usb [aue] aue0 device (linksys usb100tx) doesn't work in 1 o usb/71416 usb [ugen] Cryptoflex e-gate USB token (ugen0) detach is n o usb/71417 usb [ugen] Cryptoflex e-gate USB token (ugen0) communicati o usb/71455 usb [usb] Slow USB umass performance of 5.3 o usb/72380 usb [usb] USB does not work [dual Celeron Abit] o usb/72733 usb Kyocera 7135 Palm OS connection problem. o usb/73056 usb [usb] Sun Microsystems Type 6 USB mouse not working in o usb/74211 usb [umass] USB flash drive causes CAM status 0x4 on 4.10R f usb/74453 usb [patch] Q-lity CD-RW USB ECW-043 (ScanLogic SL11R chip o usb/74557 usb imation 500mb usb key can only be written halfway on f o usb/75764 usb [umass] [patch] "umass0: Phase Error" - no device for o usb/75800 usb [ucom] ucom1: init failed STALLED error in time of syn o usb/75928 usb Cytronix SmartMedia card (SMC) reader has problems whe o usb/76461 usb [umass] disklabel of umass(4)-CAM(4)-da(4) not used by o usb/76653 usb [umass] [patch] Problem with Asahi Optical usb device o usb/76732 usb Mouse problems with USB KVM Switch f usb/78984 usb [patch] Creative MUVO umass failure o usb/79723 usb [usb] prepare for high speed isochronous transfers o usb/80774 usb [patch] have "usbd_find_desc" in line with the other " o usb/80776 usb [udav] UDAV device driver shouldn't use usb_add_task o usb/80777 usb usb_rem_task() should wait for callback to complete? o usb/80854 usb suggestion for new iface-no-probe mechanism o usb/80935 usb [uvisor] [patch] uvisor.c is not work with CLIE TH55. f usb/81621 usb external hd hangs under load on ehci o usb/83863 usb [ugen] Communication problem between opensc/openct via o usb/85067 usb Cannot attach ScanJet 4300C to usb device o usb/85257 usb [boot] BTX boot loader fails on USB CDROM (HP DL145 Op o usb/86298 usb [mouse] Known good USB mouse won't work with correct s o usb/87224 usb Cannot mount USB Zip750 o usb/87648 usb [mouse] Logitech USB-optical mouse problem. o usb/88408 usb [axe] axe0 read PHY failed o usb/91546 usb [umodem] [patch] Nokia 6630 mobile phone does not work o usb/91811 usb Compact Flash in HP Photosmart 2610 return " Medium n o usb/91896 usb Serial Number of USB Memory Sticks is not passed throu o usb/92852 usb [mouse] [patch] Vertical scroll not working properly o o usb/93389 usb [umass] [patch] Digital Camera Pentax S60 don't work o usb/93872 usb [patch] SCSI quirk required for ELTA 8061 OL USB memor o usb/95037 usb [umass] USB disk not recognized on hot-plug. o usb/95173 usb [umass] [patch] cannot mount external usb harddisk VIA o usb/96381 usb [patch] add a quirk table entry for a flash ram usb st o usb/97175 usb [hang] USB cardreader hangs system o usb/97472 usb [patch] add support for Olympus C150,D390 o usb/98343 usb [boot] BBB reset failed errors with Creative Muvo MP3 o usb/99538 usb [kbd] while using USB keyboard default params of atkbd o usb/100746 usb [kbd] system does not boot due to USB keyboard problem o usb/101761 usb [patch] usb.h: increase maximal size of report descrip o usb/101775 usb [libusbhid] [patch] possible error in report descripto o usb/102678 usb [kbd] Dell PowerEdge DRAC5 USB Keyboard does not work o usb/102976 usb [panic] Casio Exilim Digital Camera cause panic o usb/103046 usb [ulpt] [patch] ulpt event driven I/O with select(2) an o usb/103289 usb USB 2.0 problems on AMD LX-800 CPU and CS-5536 chipset o usb/103418 usb [usb] [patch] usbhidctl: add ability to write output a o usb/103917 usb USB driver reports "Addr 0 should never happen" o usb/104290 usb [umass] [patch] quirk: TOSHIBA DVD-RAM drive (libretto o usb/104352 usb [ural] [patch] ural driver doesnt work o usb/104645 usb Rave C-201 MP3 player does not communicate o usb/105065 usb [sata] SATA - USB Bridge f usb/105361 usb [panic] Kernel panic during unmounting mass storage (C o usb/106041 usb FreeBSD does not recognise Mustek BearPaw 2400TA usb s o usb/106621 usb [axe] [patch] DLINK DUB-E100 support broken o usb/106861 usb [usbdevs] [patch]: usbdevs update: Add product ACER Ze o usb/107243 usb [patch] Apacer USB Flash Drive quirk o usb/107388 usb [PATCH] Add utoppy device from NetBSD o usb/107496 usb USB device problem on RELENG_6_2 (SHORT_XFER) (regress o usb/107665 usb [usb] [patch] uscanner support for epson stylus DX5050 o usb/107701 usb [usbd] usbd ignores "detach" o usb/107935 usb [uplcom] [panic] panic while accessing /dev/cuaU0 o usb/108056 usb [ohci] Mouse gets powered off during device probe when o usb/108344 usb [panic] kernel with atausb panics when unplugging USB o usb/108509 usb [hang] FreeBSD hang at startup after ehci0 detected (C o usb/110197 usb [umass] Sony PSP umass device does not detach from EHC s usb/110991 usb [patch] QUIRK: Super Top IDE DEVICE (depends on usb/11 o usb/112461 usb [ehci] ehci USB 2.0 doesn't work on nforce4 o usb/112463 usb problem with Samsung USB DVD writer, libscg and FreeBS o usb/112944 usb [patch] Bi-directional access to HP LaserJet 1010 prin o usb/113060 usb [usbdevs] [patch] Samsung printer not working in bidir o usb/113432 usb WARNING: attempt to net_add_domain(netgraph) after dom o conf/114013 usb [patch] WITHOUT_USB allow to compil a lot of USB stuff o usb/114068 usb [umass] [patch] Problems with connection of the umass p usb/114860 usb if_udav / ShanTou ST268 USB NIC o usb/114916 usb USB Maxtor drive (L300RO) requires quirk. o usb/114938 usb can't attach eli-devices on external hd o usb/115080 usb using a Hercules HWGUSB2-54-V2 wifi usb adapter o usb/115400 usb [ehci] Problem with EHCI on ASUS M2N4-SLI 97 problems total. From owner-freebsd-usb@FreeBSD.ORG Wed Aug 22 22:40:02 2007 Return-Path: Delivered-To: freebsd-usb@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 74B1916A420 for ; Wed, 22 Aug 2007 22:40:02 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 5043513C457 for ; Wed, 22 Aug 2007 22:40:02 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.1/8.14.1) with ESMTP id l7MMe2HU029526 for ; Wed, 22 Aug 2007 22:40:02 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.1/8.14.1/Submit) id l7MMe2HA029522; Wed, 22 Aug 2007 22:40:02 GMT (envelope-from gnats) Resent-Date: Wed, 22 Aug 2007 22:40:02 GMT Resent-Message-Id: <200708222240.l7MMe2HA029522@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-usb@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Harald Schmalzbauer Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1939316A418 for ; Wed, 22 Aug 2007 22:39:01 +0000 (UTC) (envelope-from harry@akima.flintsbach.schmalzbauer.de) Received: from akima.flintsbach.schmalzbauer.de (host.omnisec.de [62.245.232.135]) by mx1.freebsd.org (Postfix) with ESMTP id 93E6A13C483 for ; Wed, 22 Aug 2007 22:39:00 +0000 (UTC) (envelope-from harry@akima.flintsbach.schmalzbauer.de) Received: from akima.flintsbach.schmalzbauer.de (localhost [127.0.0.1]) by akima.flintsbach.schmalzbauer.de (8.14.1/8.14.1) with ESMTP id l7MM7WEV001515 for ; Thu, 23 Aug 2007 00:07:32 +0200 (CEST) (envelope-from harry@akima.flintsbach.schmalzbauer.de) Received: (from harry@localhost) by akima.flintsbach.schmalzbauer.de (8.14.1/8.14.1/Submit) id l7MM7WY1001514; Thu, 23 Aug 2007 00:07:32 +0200 (CEST) (envelope-from harry) Message-Id: <200708222207.l7MM7WY1001514@akima.flintsbach.schmalzbauer.de> Date: Thu, 23 Aug 2007 00:07:32 +0200 (CEST) From: Harald Schmalzbauer To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: Subject: usb/115737: uplcom doesn't identify my Prolific 2303 any more X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Harald Schmalzbauer List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Aug 2007 22:40:02 -0000 >Number: 115737 >Category: usb >Synopsis: uplcom doesn't identify my Prolific 2303 any more >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-usb >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Aug 22 22:40:01 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Harald Schmalzbauer >Release: FreeBSD 7.0-CURRENT i386 >Organization: >Environment: System: FreeBSD akima.flintsbach.schmalzbauer.de 7.0-CURRENT FreeBSD 7.0-CURRENT #0: Thu Aug 16 19:36:59 CEST 2007 harry@titan.flintsbach.schmalzbauer.de:/usr/obj/usr/src/sys/AKIMA i386 >Description: I've never had problems with my Prolific USB-Serial converter in the last years, but I think it's new that it doesn't get recognized with it's real name any more. ucom is attaching but doesn't evaluate the vendor >How-To-Repeat: kldload uplcom and ucom and connect the USB-Serial Converter. dmesg shows: ucom0: on uhub0 >Fix: >Release-Note: >Audit-Trail: >Unformatted: From owner-freebsd-usb@FreeBSD.ORG Fri Aug 24 10:10:08 2007 Return-Path: Delivered-To: freebsd-usb@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 31F7B16A418 for ; Fri, 24 Aug 2007 10:10:08 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 19F8E13C467 for ; Fri, 24 Aug 2007 10:10:08 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.1/8.14.1) with ESMTP id l7OAA7Lx066027 for ; Fri, 24 Aug 2007 10:10:07 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.1/8.14.1/Submit) id l7OAA7bl066026; Fri, 24 Aug 2007 10:10:07 GMT (envelope-from gnats) Date: Fri, 24 Aug 2007 10:10:07 GMT Message-Id: <200708241010.l7OAA7bl066026@freefall.freebsd.org> To: freebsd-usb@FreeBSD.org From: "Rahul Siddharthan" Cc: Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Rahul Siddharthan List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Aug 2007 10:10:08 -0000 The following reply was made to PR usb/105361; it has been noted by GNATS. From: "Rahul Siddharthan" To: bug-followup@freebsd.org, linimon@freebsd.org Cc: Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) Date: Fri, 24 Aug 2007 15:11:36 +0530 linimon wrote: > Does this panic occur if you umnount the device before removal? (We are > aware of the problem if a device is removed before unmounting). I am experimenting with FreeBSD (7.0-CURRENT) after a few years. My USB stick was not initialised by the system: it was recognised but no device node was created. When I inserted and removed it a few times, the system panicked. (As I said, there was no device node, so no mounting.) I can submit a backtrace for this if anyone is interested. I followed the suggested change to usb_subr.c here: http://lists.freebsd.org/pipermail/freebsd-questions/2006-February/112698.html and, after this, the system creates a da0 device, and mount -t msdosfs /dev/da0s1 /mnt works. I haven't yet got a panic by unmounting and removing, but removing without unmounting does cause a panic still (as you say you are aware). Other than this issue FreeBSD-7 seems remarkably stable so far. But this problem with removable media has been around since floppy disk days, and really seems to preclude using FreeBSD on any desktop machine where uptime is important (eg, a compute workstation where long-term jobs are running). From owner-freebsd-usb@FreeBSD.ORG Sat Aug 25 03:25:14 2007 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8754D16A417 for ; Sat, 25 Aug 2007 03:25:14 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (bsdimp.com [199.45.160.85]) by mx1.freebsd.org (Postfix) with ESMTP id 44F0113C457 for ; Sat, 25 Aug 2007 03:25:14 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from localhost (localhost [127.0.0.1]) by harmony.bsdimp.com (8.13.8/8.13.4) with ESMTP id l7P3MRq8055245; Fri, 24 Aug 2007 21:22:27 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Fri, 24 Aug 2007 21:22:30 -0600 (MDT) Message-Id: <20070824.212230.-957833176.imp@bsdimp.com> To: rsidd@online.fr From: "M. Warner Losh" In-Reply-To: <200708241010.l7OAA7bl066026@freefall.freebsd.org> References: <200708241010.l7OAA7bl066026@freefall.freebsd.org> X-Mailer: Mew version 5.2 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0 (harmony.bsdimp.com [127.0.0.1]); Fri, 24 Aug 2007 21:22:28 -0600 (MDT) Cc: freebsd-usb@freebsd.org Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Aug 2007 03:25:14 -0000 In message: <200708241010.l7OAA7bl066026@freefall.freebsd.org> "Rahul Siddharthan" writes: : The following reply was made to PR usb/105361; it has been noted by GNATS. : : From: "Rahul Siddharthan" : To: bug-followup@freebsd.org, linimon@freebsd.org : Cc: : Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) : Date: Fri, 24 Aug 2007 15:11:36 +0530 : : linimon wrote: : > Does this panic occur if you umnount the device before removal? (We are : > aware of the problem if a device is removed before unmounting). : : I am experimenting with FreeBSD (7.0-CURRENT) after a few years. My : USB stick was not initialised by the system: it was recognised but no : device node was created. When I inserted and removed it a few times, : the system panicked. (As I said, there was no device node, so no mounting.) : : I can submit a backtrace for this if anyone is interested. : : I followed the suggested change to usb_subr.c here: : http://lists.freebsd.org/pipermail/freebsd-questions/2006-February/112698.html : and, after this, the system creates a da0 device, and : mount -t msdosfs /dev/da0s1 /mnt : works. I haven't yet got a panic by unmounting and removing, but removing : without unmounting does cause a panic still (as you say you are aware). : : Other than this issue FreeBSD-7 seems remarkably stable so far. But this : problem with removable media has been around since floppy disk days, and : really seems to preclude using FreeBSD on any desktop machine where : uptime is important (eg, a compute workstation where long-term jobs : are running). We only do the clear endpoint stall in FreeBSD 7 when the device has been quirked to do a clearstall. Is your device one that has this quirk? Warner From owner-freebsd-usb@FreeBSD.ORG Sat Aug 25 04:30:52 2007 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 63F2116A417 for ; Sat, 25 Aug 2007 04:30:52 +0000 (UTC) (envelope-from rsidd120@gmail.com) Received: from wa-out-1112.google.com (wa-out-1112.google.com [209.85.146.180]) by mx1.freebsd.org (Postfix) with ESMTP id 3D06913C459 for ; Sat, 25 Aug 2007 04:30:52 +0000 (UTC) (envelope-from rsidd120@gmail.com) Received: by wa-out-1112.google.com with SMTP id m33so1180332wag for ; Fri, 24 Aug 2007 21:30:52 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=T8Cg82seBTQQTU0ykvYBsMcxwbWPT6H3dTJl9mQtyRI9UM3XuKlJbImlz9QRJ+yhKzKGyoxt7ersxEBSdmQ+AsXQ/BvJenNKKavceyAPqQBX9g8++4fx14/RJQQQSfQXkg+XyX63oD54aw2bPAGeEjzEDA7YztnpwHiIjV+URy0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=aCsZU9vZo14T7Pz7aT0ylORW27OBiGX0d0hDKTEp3UEoaV2Uzaih1x6Tu4KnNOV8/XekRsRxjpVwG2VgrojqC3WdArovrtpAzPV7kflbecZH2JniKdp95znnW48i5yg4p7yU/ElTnQ48+QoBOM2TZo0J9ZBWEVfy8A4vCqh2NZE= Received: by 10.114.177.1 with SMTP id z1mr380681wae.1188014589184; Fri, 24 Aug 2007 21:03:09 -0700 (PDT) Received: by 10.114.147.17 with HTTP; Fri, 24 Aug 2007 21:03:09 -0700 (PDT) Message-ID: <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com> Date: Sat, 25 Aug 2007 09:33:09 +0530 From: "Rahul Siddharthan" To: "M. Warner Losh" In-Reply-To: <20070824.212230.-957833176.imp@bsdimp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200708241010.l7OAA7bl066026@freefall.freebsd.org> <20070824.212230.-957833176.imp@bsdimp.com> Cc: freebsd-usb@freebsd.org Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: rsidd120@gmail.com List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Aug 2007 04:30:52 -0000 On 8/25/07, M. Warner Losh wrote: > In message: <200708241010.l7OAA7bl066026@freefall.freebsd.org> "Rahul Siddharthan" writes: -snip- > : I followed the suggested change to usb_subr.c here: > : http://lists.freebsd.org/pipermail/freebsd-questions/2006-February/112698.html > : and, after this, the system creates a da0 device, and > : mount -t msdosfs /dev/da0s1 /mnt > : works. I haven't yet got a panic by unmounting and removing, but removing > : without unmounting does cause a panic still (as you say you are aware). -snip- > We only do the clear endpoint stall in FreeBSD 7 when the device has > been quirked to do a clearstall. Is your device one that has this > quirk? The device is reported as umass0: on uhub2 and pciconf -v -l gives (for the USB controller) vendor = 'VIA Technologies Inc' device = 'VT82xxxxx UHCI USB 1.1 Controller (All VIA Chipsets)' class = serial bus subclass = USB uhci1@pci0:11:1: class=0x0c0300 card=0x12340925 chip=0x30381106 rev=0x50 hdr=0x00 vendor = 'VIA Technologies Inc' device = 'VT82xxxxx UHCI USB 1.1 Controller (All VIA Chipsets)' class = serial bus subclass = USB ehci0@pci0:11:2: class=0x0c0320 card=0x12340925 chip=0x31041106 rev=0x51 hdr=0x00 vendor = 'VIA Technologies Inc' device = 'VT6202/12 USB 2.0 Enhanced Host Controller' class = serial bus subclass = USB - Rahul From owner-freebsd-usb@FreeBSD.ORG Sat Aug 25 15:34:16 2007 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 582A916A41A for ; Sat, 25 Aug 2007 15:34:16 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (bsdimp.com [199.45.160.85]) by mx1.freebsd.org (Postfix) with ESMTP id E85C413C469 for ; Sat, 25 Aug 2007 15:34:15 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from localhost (localhost [127.0.0.1]) by harmony.bsdimp.com (8.13.8/8.13.4) with ESMTP id l7PFVlox070369; Sat, 25 Aug 2007 09:31:48 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Sat, 25 Aug 2007 09:31:51 -0600 (MDT) Message-Id: <20070825.093151.2040712281.imp@bsdimp.com> To: rsidd120@gmail.com From: "M. Warner Losh" In-Reply-To: <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com> References: <200708241010.l7OAA7bl066026@freefall.freebsd.org> <20070824.212230.-957833176.imp@bsdimp.com> <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com> X-Mailer: Mew version 5.2 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0 (harmony.bsdimp.com [127.0.0.1]); Sat, 25 Aug 2007 09:31:48 -0600 (MDT) Cc: freebsd-usb@freebsd.org Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Aug 2007 15:34:16 -0000 In message: <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com> "Rahul Siddharthan" writes: : On 8/25/07, M. Warner Losh wrote: : > In message: <200708241010.l7OAA7bl066026@freefall.freebsd.org> "Rahul Siddharthan" writes: : -snip- : > : I followed the suggested change to usb_subr.c here: : > : http://lists.freebsd.org/pipermail/freebsd-questions/2006-February/112698.html : > : and, after this, the system creates a da0 device, and : > : mount -t msdosfs /dev/da0s1 /mnt : > : works. I haven't yet got a panic by unmounting and removing, but removing : > : without unmounting does cause a panic still (as you say you are aware). : : -snip- : : > We only do the clear endpoint stall in FreeBSD 7 when the device has : > been quirked to do a clearstall. Is your device one that has this : > quirk? : : : The device is reported as : umass0: on uhub2 : : and pciconf -v -l gives (for the USB controller) : vendor = 'VIA Technologies Inc' : device = 'VT82xxxxx UHCI USB 1.1 Controller (All VIA Chipsets)' : class = serial bus : subclass = USB : uhci1@pci0:11:1: class=0x0c0300 card=0x12340925 chip=0x30381106 : rev=0x50 hdr=0x00 : vendor = 'VIA Technologies Inc' : device = 'VT82xxxxx UHCI USB 1.1 Controller (All VIA Chipsets)' : class = serial bus : subclass = USB : ehci0@pci0:11:2: class=0x0c0320 card=0x12340925 chip=0x31041106 : rev=0x51 hdr=0x00 : vendor = 'VIA Technologies Inc' : device = 'VT6202/12 USB 2.0 Enhanced Host Controller' : class = serial bus : subclass = USB Yes, but does it have this quirk? Please send usbdevs -v for this device. Warner From owner-freebsd-usb@FreeBSD.ORG Sat Aug 25 16:32:06 2007 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E523F16A417 for ; Sat, 25 Aug 2007 16:32:05 +0000 (UTC) (envelope-from rsidd120@gmail.com) Received: from nz-out-0506.google.com (nz-out-0506.google.com [64.233.162.233]) by mx1.freebsd.org (Postfix) with ESMTP id 99ABF13C442 for ; Sat, 25 Aug 2007 16:32:05 +0000 (UTC) (envelope-from rsidd120@gmail.com) Received: by nz-out-0506.google.com with SMTP id l8so682027nzf for ; Sat, 25 Aug 2007 09:32:04 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=B08WfUcjjaADbEAXGYWoIoYqxkxMvUgV+GM28pAXNH5b5JwsjcikwKyzl9uDkxYZ9T2fJPkhvDJweF1BdHZ/SYT5szkQHA7OkNGwRoyleapWThGU1h3CNbkwbwmyYFs7jx4vmWzmh9Iu/wh9sqn3a3tZZFkBv4C5jmCPlyN+S/g= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=hPWaPs82FLwqu8gVNeyvWcgPswllAAAg48Wlw0ED/VbNmn99FaCWAj1W8+eQVf27TzClV3Bqv2Qi69xHHFeKEhMZ/TkJxuQTUlnM9A5WbxIHBHaqA5eUAbueQJJsFZR+NHO+0W+1UQUoL/fMD1pFqGBXD6KENI/Vnq6YLbqJIWQ= Received: by 10.114.109.1 with SMTP id h1mr4744974wac.1188059524179; Sat, 25 Aug 2007 09:32:04 -0700 (PDT) Received: by 10.114.147.17 with HTTP; Sat, 25 Aug 2007 09:32:04 -0700 (PDT) Message-ID: <6a506d980708250932q7843f3a0u17240d7fb9033164@mail.gmail.com> Date: Sat, 25 Aug 2007 22:02:04 +0530 From: "Rahul Siddharthan" To: "M. Warner Losh" In-Reply-To: <20070825.093151.2040712281.imp@bsdimp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200708241010.l7OAA7bl066026@freefall.freebsd.org> <20070824.212230.-957833176.imp@bsdimp.com> <6a506d980708242103j6d34449exadf3debc1275656f@mail.gmail.com> <20070825.093151.2040712281.imp@bsdimp.com> Cc: freebsd-usb@freebsd.org Subject: Re: usb/105361: [panic] Kernel panic during unmounting mass storage (Creative mp3 player) X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: rsidd120@gmail.com List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Aug 2007 16:32:06 -0000 On 8/25/07, M. Warner Losh wrote: > Yes, but does it have this quirk? Please send usbdevs -v for this > device. The relevant bit is: Controller /dev/usb2: addr 1: high speed, self powered, config 1, EHCI root hub(0x0000), VIA(0x0000), rev 1.00 port 1 powered port 2 powered port 3 powered port 4 addr 2: high speed, power 98 mA, config 1, USB Mass Storage Device(0x0151), vendor 0x0457(0x0457), rev 1.00 (there are UHCI controllers /dev/usb0 and /dev/usb1 with nothing attached.) However, I take back what I said about the problem being fixed by commenting out the clear endpoint stall thing. It's not working any more -- and, moreover, the hard disk light stays on after I insert the USB stick. And if I remove it, there's an instant panic. I have now reverted that change to usb_subr.c. Now it lets me insert the stick and remove it, but if I do that 2-3 times (not in quick succession), it panics. Below is a backtrace. (Sorry for poor formatting if any -- I don't have a sane non-work mail account set up at the moment.) Rahul #0 doadump () at pcpu.h:195 #1 0xc05d88a3 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409 #2 0xc05d8acc in panic (fmt=Variable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:563 #3 0xc046ea87 in db_panic (addr=Could not find the frame base for "db_panic". ) at /usr/src/sys/ddb/db_command.c:433 #4 0xc046f1e5 in db_command_loop () at /usr/src/sys/ddb/db_command.c:401 #5 0xc0470c15 in db_trap (type=12, code=0) at /usr/src/sys/ddb/db_main.c:222 #6 0xc05fe464 in kdb_trap (type=12, code=0, tf=0xd2b2f974) at /usr/src/sys/kern/subr_kdb.c:502 #7 0xc0849f9f in trap_fatal (frame=0xd2b2f974, eva=0) at /usr/src/sys/i386/i386/trap.c:863 #8 0xc084a240 in trap_pfault (frame=0xd2b2f974, usermode=0, eva=0) at /usr/src/sys/i386/i386/trap.c:785 #9 0xc084abb2 in trap (frame=0xd2b2f974) at /usr/src/sys/i386/i386/trap.c:463 #10 0xc0833c5b in calltrap () at /usr/src/sys/i386/i386/exception.s:139 #11 0xc044d4eb in xpt_done (done_ccb=0xc288ac00) at /usr/src/sys/cam/cam_xpt.c:4856 #12 0xc045377e in probedone (periph=0xc2dc9200, done_ccb=Variable "done_ccb" is not available. ) at /usr/src/sys/cam/cam_xpt.c:6331 #13 0xc044f521 in camisr_runqueue (V_queue=Variable "V_queue" is not available. ) at /usr/src/sys/cam/cam_xpt.c:7255 #14 0xc0453d8f in xpt_bus_deregister (pathid=1) at /usr/src/sys/cam/cam_xpt.c:4442 #15 0xc055a940 in umass_cam_detach_sim (sc=0xc2bfc800) at /usr/src/sys/dev/usb/umass.c:2694 #16 0xc055a9ed in umass_detach (self=0xc2dc9c00) at /usr/src/sys/dev/usb/umass.c:1542 #17 0xc05f8be8 in device_detach (dev=0xc2dc9c00) at device_if.h:212 #18 0xc0560bc2 in usb_disconnect_port (up=0xc2768bec, parent=0xc2768c00) at /usr/src/sys/dev/usb/usb_subr.c:1382 #19 0xc0557ebe in uhub_explore (dev=0xc2768e00) at /usr/src/sys/dev/usb/uhub.c:462 #20 0xc055ed95 in usb_discover (v=Variable "v" is not available. ) at /usr/src/sys/dev/usb/usb.c:724 #21 0xc055fd6a in usb_event_thread (arg=0xc2767080) at /usr/src/sys/dev/usb/usb.c:440 #22 0xc05b9186 in fork_exit (callout=0xc055fcc0 , arg=0xc2767080, frame=0xd2b2fd38) at /usr/src/sys/kern/kern_fork.c:797 #23 0xc0833cd0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:205