Public bug reported:

My computer freezes, and btw have problems with usb keyboard (perhaps related 
perhaps not).
- GA-MA78GM-S2H
- 2 GB ram
- nvidia 8600 GT (used instead build in on mobo)
- nvidia binary driver. I tried XGL and compiz and they are installed but now I 
turned off 3d effects

Two problems
1) on bootup, in GRUB the keyboard do not work
- it DOES work when plugged into other USB slot (one of 4 main ones on mobo 
have this problem)
- even in the "invalid" USB slot it works as long as there are other USB events 
- i.e. when I move my USB mouse around, then keyboard work for few seconds, 
then again stops (keys have no effect) untill I move mouse again
- then it works again fully when system boots up fully (and probably during 
rest of bootup)
- it does work in BIOS settings etc

2) randomly, around daily, computer freezes:
- keyboard stops working, even numlock/capslock don't change the LED
- hard drive LED is showing disc activity then (i.e. for 10 seconds, then goes 
off sometimes)
- sys-rq-B and others have no effect
- pluding other keyboard doesnt help afair
- screen turns off (or rather - it shows no input) - as if the gfx card would 
stop sending data 

I guess it may be:
1) buggy support of my mobo/gfx models
2) my mobo/gfx is broken (I will try to replace it I guess)
3) something else?

It seems a bit related to https://bugs.launchpad.net/ubuntu/+source
/linux-source-2.6.22/+bug/173135 (but perhaps not?)

** Affects: linux-source-2.6.22 (Ubuntu)
     Importance: Undecided
         Status: New

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random lockups, screen off, USB keyboard stops working (numlock etc), sys-rq-b 
doesnt work. Gigabyte GA-MA78GM-S2H; nvidia 8600 GT
https://bugs.launchpad.net/bugs/228417
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