Date: Tue, 11 Nov 2008 21:33:44 +0100 From: Martin <nakal@web.de> To: "Peter Wemm" <peter@wemm.org> Cc: Volker <volker@vwsoft.com>, freebsd-usb@freebsd.org, Stable <freebsd-stable@freebsd.org>, Andriy Gapon <avg@icyb.net.ua>, FreeBSD Subject: Re: usb keyboard dying at loader prompt Message-ID: <20081111213344.6657548c@zelda.local> In-Reply-To: <e7db6d980811111055j24ed8f4rb4539c6678553b97@mail.gmail.com> References: <4912E462.4090608@icyb.net.ua> <491586B9.2020303@vwsoft.com> <4919851B.7050800@icyb.net.ua> <e7db6d980811111055j24ed8f4rb4539c6678553b97@mail.gmail.com>
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Am Tue, 11 Nov 2008 10:55:45 -0800 schrieb "Peter Wemm" <peter@wemm.org>: > Some bioses have a list of MBR partition id's and use that to > determine what to do with the USB keyboard. One of my ol older amd64 > motherboards worked but would always disable the usb keyboard right as > loader started. I discovered the following: > * If I put the freebsd bootblocks and loader on a floppy drive (no > MBR), then the bios did not turn off the keyboard. It always > continued to work for loader. > * If i hacked the boot bootblocks and loader and kernel to recognize > different MBR slice id nubmers as "ours", then changing the freebsd > MBR to be "msdos" or "linux" also worked for that BIOS. It would no > longer turn off the USB keyboard. I don't recall which Id number I > used instead of 165 - it was about 4 years ago. > * There were other consequences of using the partition ID hack - I > think I remember it turning off the apic for msdos mode. > > Your problems may be different, but mine were caused by a BIOS > whitelist of MBR partition id's. What a stupid problem. On that > motherboard I ended up taking the path of least resistance and using > the PS/2 adapter plug on the keyboard. Hello, I want to add some information about USB problems which occur for me very frequently. I have found out that most of the problems are related to Gigabyte mainboards. I have 2 of them now. One is "EP35C-DS3R". With this mainboard sometimes my USB keyboard and USB mouse stop working (the power is simply off). I can reattach them and they both power up again. The second mainboard is "EP45-DS3R". Here the problem is even worse. The keyboard and mouse (both USB) lose power as soon as FreeBSD scans the USB controllers. Here, I can also reattach the devices and they are usable again. One further hint: it seems Vista (64 bit version) has the same problem with this EP45-DS3R mainboard. After it boots into the login screen, I have to reattach the devices to use them. The mainboard is not broken, I have tried 3 so far and all have these strange effects. And now... I want to remind you that I have already posted here about (same) USB problems on my laptop (Lenovo Thinkpad T60p). Sometimes I have to reattach my keyboard there, too. Of course, this is not Gigabyte here, but the weird behaviour ressembles the one above. -- Martin
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