Questions about nvidia and i2c_nvidia_drm

[kingpenguin]

I am using Ubuntu 24.04 with the kernel 6.8.0-38-generic. After installing the nvidia driver 535 I am seeing two issues.

1. [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00002700] Failed to grab modeset ownership
2. UBSAN: array-index-out-of-bounds in build/nvidia/535.183.01/build/nvidia-uvm/uvm_mmu.c:569:17

I am almost positive that #2 is a known ongoing bug talked about here https://forums.developer.nvidia.com/...kernels/271705 and will be fixed in later versions of the driver. Also someone from nvidia has already commented on that saying it is a harmless issue and the code related was here https://github.com/NVIDIA/open-gpu-k...pmm_gpu.c#L224.

The 1st issue is more what I had questions on. I found here https://answers.launchpad.net/ubuntu/+question/706349 that you should be able to do the following below.

echo "blacklist i2c_nvidia_gpu" > /etc/modprobe.d/blacklist_i2c-nvidia-gpu.conf && sudo update-initramfs -u

I was reading here https://www.kernel.org/doc/html/late...vidia-gpu.html that is has to do with Type-c, but I was a little unsure if that means usb type c or something else. I do not see any usb c ports on my 4070TI, so if it is I assume it is safe to blacklist. My major question is does anyone see an issue doing this on an ubuntu 24.04 desktop machine that the only real things I do is wine gaming and browsing the web?

Thank you in advance for everything! I really hope I posted this in the right location.

[#&thj^%]

Have you tried with adding a kernel parameter "fbdev=1 " In "/etc/default/grub" first.

[kingpenguin]

No I have not. Can you explain a bit more about what this will do and how you are expecting it to solve the issue? I am not looking for any guarantees but just trying to understand what this is really doing.
The only thing that I am pretty sure of is that is for frame buffer support. I thought most applications just use the x11 or wayland protocols to do this. Also I was under the understanding that fb is more for terminal output not the gui ( I might be completely wrong here )

[#&thj^%]

modesetting of course, Straight from nVidia:

The issue here is that any application opening one of the /dev/dri/card* device files automatically attempts to get DRI “master” permission. In the NVIDIA driver model, that tries to get “modeset ownership” on the corresponding GPU. If another driver component already has modeset ownership, then getting “master” fails and prints this message.

This happens even if the application doesn’t want or need DRI master.

Their suggestion is:

You can avoid the problem by loading nvidia-drm with the fbdev=1 parameter. But like I mentioned in my earlier reply, this message is usually harmless and expected. You can just ignore it if you’re not having any functional problems regarding applications using DRM just for rendering.

I'm told that the newer drivers have a fix already:

 nvidia-smi|grep NVIDIA
| NVIDIA-SMI 555.52.04              Driver Version: 555.52.04      CUDA Version: 12.5     |
|   0  NVIDIA GeForce RTX 3050 ...    Off |   00000000:01:00.0 Off |                  N/A |

sudo dmesg|grep NVIDIA 
[   11.140505] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  555.52.04  Tue Jun  4 13:54:58 UTC 2024
[   11.156093] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  555.52.04  Tue Jun  4 13:21:08 UTC 2024

]

[kingpenguin]

That would be amazing. If that is the case I might just wait for that, I am not really experiencing an issue per say but just wanted to start cleaning up the errors in the logs.

[#&thj^%]

Sounds like a wise choice.

[kingpenguin]

Now that I am off work it does seem that there is a nvidia-driver-555 in apt. Is this something that you would say is stable for gaming use?

[#&thj^%]

Now that I am off work it does seem that there is a nvidia-driver-555 in apt. Is this something that you would say is stable for gaming use?

Are you running the "ppa.launchpadcontent.net/graphics-drivers/ppa/ubuntu/" as a source?

I'm not much of gamer so nothing helpful there. But I do now find it stable as always "YMMV"
Note my installed Driver:

apt policy nvidia-driver-555 nvidia-dkms-555
nvidia-driver-555:
  Installed: 555.52.04-0ubuntu0~gpu24.10.1
  Candidate: 555.52.04-0ubuntu0~gpu24.10.1
  Version table:
 *** 555.52.04-0ubuntu0~gpu24.10.1 500
        500 https://ppa.launchpadcontent.net/graphics-drivers/ppa/ubuntu oracular/main amd64 Packages
        100 /var/lib/dpkg/status
nvidia-dkms-555:
  Installed: 555.52.04-0ubuntu0~gpu24.10.1
  Candidate: 555.52.04-0ubuntu0~gpu24.10.1
  Version table:
 *** 555.52.04-0ubuntu0~gpu24.10.1 500
        500 https://ppa.launchpadcontent.net/graphics-drivers/ppa/ubuntu oracular/main amd64 Packages-Driver
        100 /var/lib/dpkg/status

I just spent a couple of days helping someone fix their install using Ubuntu-Drivers.
I don't use it, I just prefer cli.
Please remove and purge the old driver before installing the new driver.