Comment 9 for bug 254330

I can sumbit the existence of this bug. It happens not very often, but not rarely enough to just skip it. Though I haven't seen it for 2 days, now I've got it under the latest kernel 2.6.27. After it starts beeping, Ubuntu doesn't load up, instead the screen is full of trash, sort of grayscale pictures (the image changes from dark gray to lighter one, and it affects different parts of the screen in different time, so it's all very unsolid).