Public bug reported:

I have a dual monitor set-up using two separate single head video cards
(r128 and mga). Worked fine in Hardy, but upgrading to Intrepid left
Xorg at full CPU usage when starting up. It hangs in module libint10
while "booting" the second video card.

Bug seems to be introduced with Xorg 7.4. Downgrading Xorg to 7.3 (xorg-
server 1.4) is not a very clean solution but works for me until this bug
is fixed or until I get new hardware. (I also had to blacklist the
kernel module evdev because some keyboard keys were doing weird things
because of the downgrade.)

My preliminary analysis: the PCI bus scanning/accessing code is replaced
with libpciaccess in 7.4 [1], but not all video drivers are yet ported
[2]. Normally not a problem, unless you try to boot a secondary card
with it. Until ported drivers are being published, this will stay a
problem I think.

Found references:
- https://bugs.freedesktop.org/show_bug.cgi?id=18160 (upstream)
- https://bugzilla.redhat.com/show_bug.cgi?id=454864
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=488452
- http://www.nabble.com/Re%3A-xserver-and-Mesa-updated-p20645427.html
[1] http://www.x.org/wiki/Releases/7.4
[2] http://www.x.org/wiki/PciReworkProposal

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: xorg (Debian)
     Importance: Unknown
         Status: Unknown

** Affects: xorg (Fedora)
     Importance: Unknown
         Status: Unknown

** Bug watch added: Red Hat Bugzilla #454864
   https://bugzilla.redhat.com/show_bug.cgi?id=454864

** Also affects: xorg (Fedora) via
   https://bugzilla.redhat.com/show_bug.cgi?id=454864
   Importance: Unknown
       Status: Unknown

** Bug watch added: Debian Bug tracker #488452
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=488452

** Also affects: xorg (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=488452
   Importance: Unknown
       Status: Unknown

-- 
xserver-xorg 7.4 breaks dual card setups
https://bugs.launchpad.net/bugs/302548
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to