Bug 5641

Summary:	Xinerama blocks chipset and GLX fails on Asus M2400N/Centrino/855GM
Product:	Drivers	Reporter:	Andrej Podzimek (andrej)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	REJECTED INSUFFICIENT_DATA
Severity:	high	CC:	airlied, bunk
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.14.2	Subsystem:
Regression:	---	Bisected commit-id:

Description Andrej Podzimek 2005-11-23 04:54:05 UTC

Most recent kernel where this bug did not occur: 2.6.13.1
Distribution: Using Vanilla kernel, not stack. (ArchLinux)
Hardware Environment: Asus M2400N, Centrino, Intel 855GM
Software Environment: Linux/X.org/KDE

Problem Description:
GLX seems to be buggy. glxgears work flawlessly. glxinfo says direct rendering
is on. However, OpenGL screensavers and apps either fail immediately, or produce
a strange output, using only the upper part of the screen. Some of them
segmentation faulted soon afterwards.

Xinerama does not work any more. The double-headed layout cannot be used any
more. An attempt to load X with double-headed layout results in blocking the
chipset and the machine has to be rebooted to make X work again.

Steps to reproduce:
Launch X with KDE or Gnome and try some GL screensavers like Euphoria. Try
startx with a double-headed layout or Xinerama turned on.

Comment 1 Andrej Podzimek 2005-11-25 07:34:34 UTC

Exactly the same problem in 2.6.14.3.

Comment 2 Dave Airlie 2006-01-19 02:30:36 UTC

you didn't upgrade X.org by any chance at some point, or does going back to
2.6.13.1 work with your current X setup? do you get direct rendering with 2.6.13.1?

Comment 3 Adrian Bunk 2006-04-22 12:47:21 UTC

Please reopen this bug if:
- it is still present in kernel 2.6.16 and
- you can provide the requested information.