Arch Linux User Repository

For testing users, contributors: check out https://github.com/archlinux-jerry/nvidia-340xx
Warning: force push may happen to match the aur tree

@MegaDeKay Yes, everything works with kernel 6.8 without manual intervention (tested on real hardware). Read here for more information:
https://github.com/archlinux-jerry/nvidia-340xx/issues/8
I've left the original post if someone still has a problem and copying 'drm_legacy.h' is a solution for them.

is it possible to add an extra conflict package from conflicts=('nvidia') to conflicts=('nvidia' 'nvidia-dkms')

@Anakievs: To clarify, you are saying that everything works now with this driver compiled on Arch with a new 6.8 kernel, including direct rendering?

$ glxinfo | grep "direct rendering"
direct rendering: Yes

$ uname -r
6.8.7-arch1-1

@Anakievs: What's the output if you run: glxinfo | grep "direct rendering"?

"Yes" or "No"?

@NSLW I don't have a black screen issue. I've thought I've made something revolutionary about the drm issue. Then I've realised that I've made nothing.

I've just compiled the driver on Debian 12. I like Arch a lot more but I look for other options.

@Anakievs did you try to add

Section "Device"
    Identifier  "Videocard0"
    Driver      "nvidia"
EndSection

to your /etc/X11/xorg.conf to fix the black screen issue?

Edit:
The driver works and the steps bellow aren't requared. I've trusted the people saying there is an issue without confirming it myself.

Original:
Here is a workaround I've used (it's based on lmh69's comment).

I've extracted 'drm_legacy.h' from 'linux-headers-6.7.arch3-1-x86_64.pkg.tar.zst' to '/usr/lib/modules/6.8.4-arch1-1/build/include/drm/drm_legacy.h'. Then I've reinstalled both 'linux-headers' (to run dkms) [and 'linux' to run mkinitcpio] you can run them manually but this way was easier for me.

I've tested just a few things: vdpau, glx, Xorg.0.log and dmesg. I haven't found any issues so far.

IMPORTANT: I am still with 'nvidia-340xx-dkms 340.108-35'. I've never updated. It won't work with 'nvidia-340xx-dkms 340.108-36'.

I don't know if it's wrong but works for me:

$ uname -r
6.8.4-arch1-1

$ glxgears
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
303 frames in 5.0 seconds = 60.491 FPS
300 frames in 5.0 seconds = 59.972 FPS

$ mpv ...
 (+) Video --vid=1 (*) (h264 1280x720 25.000fps)
 (+) Audio --aid=1 (*) (aac 2ch 44100Hz)
Using hardware decoding (vdpau).
AO: [pulse] 44100Hz stereo 2ch float
VO: [gpu] 1280x720 vdpau[yuv420p]
Exiting... (Quit)

Although I have installed nvidia-340xx-dkms 340.108-36 under 6.8.1-arch1-1 kernel, every time I'm trying to launch any "opengl" application raises this:

$ kitty
X Error of failed request:  BadDrawable (invalid Pixmap or Window parameter)
  Major opcode of failed request:  155 (NV-GLX)
  Minor opcode of failed request:  4 ()
  Resource id in failed request:  0x1000009
  Serial number of failed request:  241
  Current serial number in output stream:  241

@lmh69 @ JerryXiao Who maintains the patches? I mean who writes them? I guess someone has to help him with 'drm' thing.