http://bugs.freedesktop.org/show_bug.cgi?id=23741
Summary: Driver pixmaps cause pushbuf validation failure on mode
change (nv28, KMS)
Product: xorg
Version: git
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/nouveau
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Roughly latest git of ddx, drm and libdrm. Xorg-server git version some weeks
old. Confirmed with a full nouveau/linux-2.6 git kernel.
NV28, KMS active. Issuing the command 'xrandr -s 800x600' resulted in a kernel
hang, a live lock one might say. This was worked around in nouveau/linux-2.6 in
the commit "drm/nouveau: bail out if validation fails repeatedly", which allows
the kernel to fail gracefully, killing only X instead of the whole system.
When 'xrandr -s 800x600' fails, monitor loses signal completely. With the
kernel workaround in place, X can be restarted and everything is good again.
Note, that sysRq force-fb does restore the mode, but not the virtual console
image.
Setting Option "EXAPixmaps" "false" in xorg.conf disables the bug, so it is
driver pixmap specific. Likely it does not affect NV50 family, or someone would
have noticed it.
--
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/nouveau
