Bug 541372 – 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 ?()

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[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) 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) 2015-03-11 06:42:56 UTC]

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

[Comment 8 Jeroen Roovers (RETIRED) 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