Bug 541372

Summary:	x11-base/xorg-server-1.16.4 /-1.17.1 with x11-drivers/nvidia-drivers-346.35 on Optimus hardware - segmentation fault in /usr/lib64/xorg/modules/drivers/nvidia_drv.so at ?()
Product:	Gentoo Linux	Reporter:	tazinblack <verbeamt>
Component:	[OLD] Library	Assignee:	Gentoo X packagers <x11>
Status:	RESOLVED FIXED
Severity:	normal	CC:	baccenfutter, jer, pchrist
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	Xorg.0.log Version 1.16.4 Xorg.0.log version ~1.17.1

Description tazinblack 2015-02-25 20:39:33 UTC

xserver crashes at startupwith segmentation fault

Reproducible: Always

Steps to Reproduce:
1.upgrade xorg-server to 1.16.4
2.
3.

Comment 1 tazinblack 2015-02-25 20:41:31 UTC

Created attachment 397514 [details]
Xorg.0.log Version 1.16.4

Comment 2 tazinblack 2015-02-25 20:42:53 UTC

I also tried to upgrade xorg-server to testing but that did not helb.
See attachment

Comment 3 tazinblack 2015-02-25 20:44:01 UTC

Created attachment 397518 [details]
Xorg.0.log version ~1.17.1

Comment 4 bacce 2015-02-25 21:44:22 UTC

I am suffering the same issues and have been lead to the belief that it has something to do with NVIDIA Optimus and something that seems to have changed in the code around modesetting.

We could confirm in the forum that we both have this issue on a laptop with an NVIDIA Optimus.

  https://forums.gentoo.org/viewtopic-p-7709174.html#7709174

Before this issue occured I started X running startx and had the following two lines to enable the NVIDIA inside my .xinitrc:

  xrandr --setprovideroutputsource Intel NVIDIA-0
  xrandr --auto

Hope that helps.

Comment 5 tazinblack 2015-02-26 08:01:14 UTC

On my box .xinitrc looks like this:

xrandr --setprovideroutputsource modesetting NVIDIA-0
xrandr --auto
exec startkde

If more information is needed, please let me know.

Comment 6 Panagiotis Christopoulos (RETIRED) gentoo-dev

2015-03-03 17:56:56 UTC

Please paste your "emerge --info" and "emerge -pv xorg-server nvidia-drivers" output.

Comment 7 Jeroen Roovers (RETIRED) gentoo-dev

2015-03-11 06:42:56 UTC

Please post your `emerge --info' output in a comment.

Comment 8 Jeroen Roovers (RETIRED) gentoo-dev

2015-03-11 06:52:11 UTC

Comment on attachment 397518 [details]
Xorg.0.log version ~1.17.1

This segmentation fault is quite different from the one in the other Xorg log. What they might have in common is that you're using modesetting to begin with. What happens when you disable that?

Comment 9 bacce 2015-03-11 08:12:56 UTC

Back in the days, when I had no modesetting in my .xinitrc on my NVIDIA Optimus equipped laptop, I would end up with a black blank screen. I dug myself through tutorials in the net, finally ending up with the modesetting solution, which worked perfectly fine the past 12-ish months.

I've just commented out the xrandr commands in my .xinitrc and my X starts fine but without any 3D support. eselect opengl ist set to nvidia but glxgears fails with:

> Xlib:  extension "GLX" missing on display ":0.0".
> Error: couldn't get an RGB, Double-buffered visual

Comment 10 tazinblack 2015-03-26 20:09:16 UTC

for me x11-drivers/nvidia-drivers-346.47 has fixed the problem