Nvidia GLX not Loading After Upgrade to xserver 1.20
 

Just a heads up for others who might have this problem -

after an apt-get upgrade, the nvidia glx failed to load after a restart of X, and as a result, steam and games slowed to a crawl, glxgears wouldn't run at all.

After a bunch of searching, this thread had the reason: they changed the X search path in 1.20, so it can't find the nvidia GLX module.

https://bugs.debian.org/cgi-bin/bugr...cgi?bug=900248

The thread recommends modifying /etc/nvidia/current/nvidia-drm-outputclass.conf to point to the nvidia module, which seems to fix it usually.

I needed to do an extra step: on my system, I had an xorg.conf that called module "glx". The fix referred to above didn't work until I removed/renamed the xorg.conf file so that it's not read by X. I didn't know that X doesn't need an xorg.conf anymore, but it seems to run fine without it now.

Hope this helps somebody having the same problem.

Thanks for posting this. I always have graphics driver problems whenever something related gets upgraded. I bookmarked your post.