Ubuntu
xserver-xorg-video-ati package

  1. Bug #148408
  2. Comment #127

Comment 127 for bug 148408

Revision history for this message
Tormod Volden (tormodvolden) wrote :

I wonder if this in your strace is ok:
ioctl(6, MTRRIOC_GET_ENTRY, 0xbfb62aec) = -1 EINVAL (Invalid argument)

I traced the POST code in RADEONEnterVT() to http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=234575 where it was introduced as a workaround to some cards going bad over resume. I guess it should not try to POST after only a VT switch.

Don't worry about ltrace, your gdb work is excellent. But it means that just executing the POST without waiting before and after doesn't help, so a usleep workaround will probably not work.