Arch Linux

Is this with an optimus setup?

Hey. Yes it is. Intel 620 + NVidia 940

Just to be clear. I'm using bumblebee to switch between the cards, so the system starts X with the Intel card.

The -3 version of the package works without issue, so the bug is definitely due to changes in -4

Well here's the issue. Before -4 X didn't start at all on dual GPU systems. I'm not entirely sure what to do here and I don't have a system to test this on anymore.

Yes, it did and it still does

Running -3 and everything works fine. X starts on Intel, optirun runs programs on the dGPU just fine.

I repeat. -3 is working correctly

Added Xorg logs. It seems that with -4 the nvidia /usr/lib/nvidia/xorg/libglx.so is loaded instead of /usr/lib/xorg/modules/extensions/libglx.so

Xorg.1 is for -4
Xorg.0 for -3

That happened because /usr/lib/nvidia/xorg was added to module path. nvidia glx module overlaps xorg glx module.

In order to fix it you can create /etc/X11/xorg.conf.d/20-modulepath.conf with the following content:

Section "Files"
ModulePath "/usr/lib/xorg/modules"
EndSection

I got the other bug report which says that -3 didn't work perfectly after all. I'm getting really mixed signals here. I'm not sure how to fix it for both people.

@Yakumo Ran, your fix works for me (with /etc/X11/.. and not /usr/X11/..), thank you!

In the other bug report, the user doesn't seem to use bumblebee. What it seems to happen here, is that because of the new 99-nvidia.conf file, X tries to use nvidia's libglx on Intel card too. Adding a file, with higher priority, that will load /usr/lib/xorg/modules first, in the bumblebee package, should work for everyone.

Here's how I fixed my issue:

cat /usr/share/X11/xorg.conf.d/99-nvidia.conf

Section "Files"
ModulePath "/usr/lib/xorg/modules"
ModulePath "/usr/lib/nvidia/xorg"
EndSection


I've basically switched the order or the two ModulePath entries. Somebody without dual graphics should probably test this

What's weird is that /usr/lib/nvidia/xorg is in nvidia-drm-output-class.conf too.

cat /usr/share/X11/xorg.conf.d/10-nvidia-drm-outputclass.conf
Section "OutputClass"
Identifier "intel"
MatchDriver "i915"
Driver "modesetting"
EndSection

Section "OutputClass"
Identifier "nvidia"
MatchDriver "nvidia-drm"
Driver "nvidia"
Option "AllowEmptyInitialConfiguration"
Option "PrimaryGPU" "yes"
ModulePath "/usr/lib/nvidia/xorg"
EndSection


so nvidia-99 could probably be removed if this is done

cat /usr/share/X11/xorg.conf.d/10-nvidia-drm-outputclass.conf
Section "OutputClass"
Identifier "intel"
MatchDriver "i915"
Driver "modesetting"
EndSection

Section "OutputClass"
Identifier "nvidia"
MatchDriver "nvidia-drm"
Driver "nvidia"
Option "AllowEmptyInitialConfiguration"
Option "PrimaryGPU" "yes"
ModulePath "/usr/lib/xorg/modules"
ModulePath "/usr/lib/nvidia/xorg"
EndSection

Just to say, this also broke steam for me, opengl glx extension is not supported by display, resolved the error by downgrading nvidia utils to -3, -4 broke it

IMO this should be reverted, one of the bugs Svenstaro refers to didn't contain any useful info, and trying to start a second X server is at best a corner case (and we also don't know how that second X server start was attempted and whether it didn't load necessary config files), if someone wants to fix this without using bumblebee they should be following the Nvidia Optimus wiki documentation.

Can you guys check out the new packages in [testing]?

On my Intel+Nvidia setup everything works after installing -5

Can you also check the state of https://bugs.archlinux.org/task/53704 with your setup? Also please check and see whether you can reproduce that with -5: https://bugs.archlinux.org/task/53090

I can't really test 53704, since I have a dual graphics setup, so it will always load the xorg libgl. As for the second the same thing applies. Those should both be tester by nvidia only users, but I'd say it should work for everybody this time

Anyway, bumblebee (which starts an invisible X server when running apps with optirun seems to use the correct nvidia provided libglx as per Xorg.8.log, even after the 2nd instance

Everything is working for me too with -5, also on a bumblebee setup so can't really test the other issues

I moved the packages to [extra] but will leave this up for just a few more days to see whether everything is working fine for everyone.