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I've been getting the error that /usr/src/linux doesn't exist. What can I do? Using manjaro with kernel 5.14.7-2

So, it now works in 5.14.7-arch1-1, but no longer boots (just a blank screen and _ in the top left corner) in 5.10.68-1 (linux lts)

I have linux lts installed as stable mainline often breaks (until there's a fix to this package). Given 5.10 will now be supported for many years, it was my mitigation against the instability of mainline non-lts.

It's nice 5.14 works but if it breaks in 5.15 at some point, I won't be able to use 5.10 in the interim. Any ideas?

Sorry guys for not reply (special in gitlab) but I have been busy in rl. About the b2sum, it was correct to my local revision. Probably during the clone/merge process something escaped to my tired eyes.

I'm glad it helped.

Everything works very well. Thanks. However, I never found on the web the answer to this question about Nvidia:

why /dev/dri/renderD128 isn't in /dev/dri ?

Thank you very much! The driver is working.

Latest -24 version works great for me on 5.14.6.arch1-1. /dev/drm is present and SDDM works too. My hats off to the devs that are keeping my old laptop going with the latest and greatest!

@alou-S You need to manually create the /etc/X11/xorg.conf.d/20-nvidia.conf. The filename 20-nvidia.conf is totally optional here, I personally named it because:

• It is easier to know exactly what sort of contents would be expected within that file, at a glance; it is pertaining to nvidia of course, and,

• The prefixing of the numbers indicates that it has a higher priority/preference when Xorg starts.

Have a look at Arch Linux wiki, troubleshooting nvidia page. It gives you an idea of why I chose to use that filename, and to have that file there, even though that linked issue does not specifically apply to me.

@tuxsavvy Nvm, I figured it out. Just had to add this to my xorg.conf

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

Also realized that /etc/X11/xorg.conf.d/20-nvidia.conf doesn't exist for me, coping it over from /usr/share/nvidia-340xx doesn't seem to fix the issue so had to add it to xorg.conf

@alou-S There's not enough information with regards to your issue. I have found a workaround to ensure that glxinfo -B does show my card. If this does not work, then I do not know how to solve your issue.

In my /etc/X11/xorg.conf.d/20-nvidia.conf,

# (EE) NVIDIA(0): Failed to initialize the GLX module; please check in your X
# (EE) NVIDIA(0):     log file that the GLX module has been loaded in your X
# (EE) NVIDIA(0):     server, and that the module is the NVIDIA GLX module.  If
# (EE) NVIDIA(0):     you continue to encounter problems, Please try
# (EE) NVIDIA(0):     reinstalling the NVIDIA driver.
# https://bbs.archlinux.org/viewtopic.php?pid=1702290#p1702290
# https://bugs.archlinux.org/task/53090#comment164782
Section "Files"
        ModulePath "/usr/lib/nvidia/xorg"
        ModulePath "/usr/lib/xorg/modules"
EndSection

Section "Device"
        Identifier "Nvidia Card"
        Driver "nvidia"
        VendorName "NVIDIA Corporation"
        Option "NoLogo" "1"
        BoardName "GeForce <censored>"
EndSection

Perhaps try referring to the links in lines prepended with # character.

@tuxsavvy Hmm other than the /dev/dri listing issue and sddm issue. The other problem is that OpenGL doesn't seem to work anymore. glxinfo gives some sort of (NV-GLX) error.