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Date:      Mon, 22 Aug 2005 00:21:33 -0500
From:      Jonathan Noack <>
Subject:   reboot hang (acpi?) and other 6.0-BETA2 oddities
Message-ID:  <>

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Ever since upgrading from 5.4 to RELENG_6 (and recompiling all ports), 
one of my machines doesn't like to reboot anymore.  All services appear 
to be successfully killed prior to initiating the reboot.  I see the 
following messages when rebooting (this from 6.0-BETA2):

Aug 21 23:57:38 optimator syslogd: exiting on signal 15
Waiting (max 60 seconds) for system process `vnlru' to stop...done
Waiting (max 60 seconds) for system process `bufdaemon' to stop...done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining...4 4 3 1 0 0 0 done
All buffers synced.
/usr: unmount pending error: blocks -8 files -8
/tmp: unmount pending error: blocks 0 files -1
unmount of /dev failed (BUSY)
Uptime: 5d23h58m22s
pfs_vncache_unload(): 1 entries remaining
Shutting down ACPI

After printing "Shutting down ACPI" the machine just hangs.  It rebooted 
fine with 5.4.  I've also noticed a several second hang when booting 
just after printing kernel date and version.  Are these problems ACPI 

What about the unmount pending errors and the pfs_vncache_unload message?

See attached dmesg.

Jonathan Noack | | OpenPGP: 0x991D8195

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Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD 6.0-BETA2 #4: Sun Aug 21 02:51:46 CDT 2005
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel Pentium III (931.81-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x686  Stepping = 6
real memory  = 2147418112 (2047 MB)
avail memory = 2096500736 (1999 MB)
ACPI APIC Table: <VIA694 >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ACPI: overriding DSDT/SSDT with custom table
    ACPI-0377: *** Info: Table [DSDT] replaced by host OS
ioapic0 <Version 1.1> irqs 0-23 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <VIA694 AWRDACPI> on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link LNKA> irq 5 on acpi0
pci_link1: <ACPI PCI Link LNKB> irq 12 on acpi0
pci_link2: <ACPI PCI Link LNKC> irq 11 on acpi0
pci_link3: <ACPI PCI Link LNKD> irq 10 on acpi0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff,0x4000-0x407f,0x4080-0x40ff,0x5000-0x500f,0x6000-0x607f on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <VIA 82C691 (Apollo Pro) host to PCI bridge> mem 0xd0000000-0xd3ffffff at device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 82C686B UDMA100 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xc000-0xc00f at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
pci0: <bridge> at device 7.4 (no driver attached)
em0: <Intel(R) PRO/1000 Network Connection, Version - 2.1.7> port 0xcc00-0xcc3f mem 0xd9020000-0xd903ffff,0xd9000000-0xd901ffff irq 17 at device 11.0 on pci0
em0: Ethernet address: 00:07:e9:0d:67:2c
em0:  Speed:N/A  Duplex:N/A
pci0: <network, ethernet> at device 12.0 (no driver attached)
atapci1: <HighPoint HPT370 UDMA100 controller> port 0xd400-0xd407,0xd800-0xd803,0xdc00-0xdc07,0xe000-0xe003,0xe400-0xe4ff irq 18 at device 14.0 on pci0
ata2: <ATA channel 0> on atapci1
ata3: <ATA channel 1> on atapci1
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A, console
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xcffff,0xd4000-0xd4fff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
Timecounters tick every 1.000 msec
ipfw2 (+ipv6) initialized, divert loadable, rule-based forwarding disabled, default to deny, logging unlimited
acd0: DVDROM <JLMS XJ-HD163D/GHR8> at ata0-master UDMA33
ad4: 190782MB <HDS722525VLAT80 V36OA6MA> at ata2-master UDMA100
ad6: 190782MB <HDS722525VLAT80 V36OA60A> at ata3-master UDMA100
ar0: 190782MB <HighPoint v2 RocketRAID RAID1> status: READY
ar0: disk0 READY (master) using ad4 at ata2-master
ar0: disk1 READY (mirror) using ad6 at ata3-master
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/ar0s1a
em0: link state changed to UP


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