usb keyboard dying at loader prompt

[pluknet]

2008/11/11 Martin <nakal at web.de>:
> Am Tue, 11 Nov 2008 10:55:45 -0800
> schrieb "Peter Wemm" <peter at 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.

I have the same problem with my ukbd&ums:
they are power off'ed during the boot and I should to re-attach them .
MB: Asus p5k.

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