on 06/11/2008 14:34 Andriy Gapon said the following: > I have a quite strange problem. > This is with 7-BETA amd64. > All of USB is out of kernel and is loaded via modules. > BIOS has "Legacy USB" enabled. > I have only a USB keyboard, no PS/2 port. > > The keyboard works file in BIOS and for selecting boot device in boot0 > menu. It also works in loader menu. If in the menu I select to go to > loader prompt then it works for about 5 seconds and then "dies" - no > reaction to key presses, no led change, nothing. > I haven't actually verified if the keyboard would still work if I stayed > in loader menu for longer than ~10 seconds. > > This doesn't happen if USB is built into kernel. > > Weird...
I did more experimentation and the behavior seems to be quite random - sometimes keyboard works ok for long time in all places, sometimes it stops working after some period of time, sometimes it doesn't work from the start and couple of times I experienced boot process going astray. Not sure what stage that was, there were endless messages spewed on the screen very fast, I couldn't read them. This leads me to the following "crazy" question - is it possible that our boot chain corrupts some vital BIOS memory? I think loader would be a primary suspect. I am not sure of anything, but a wild guess is that RAM where BIOS stores some USB-related stuff gets corrupted. Maybe it's overwritten when kernel and modules are loaded... -- Andriy Gapon _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
