Public bug reported:

I am reporting a suspected kernel/NVIDIA compatibility regression after
updating Ubuntu. Booting the previous kernel restores GPU operation with
the same installed NVIDIA driver.

Environment:
- Ubuntu 26.04.1 LTS
- NVIDIA GeForce GTX 1060 3GB
- Proprietary NVIDIA driver 580.178.04
- Failing kernel: 7.0.0-31-generic
- Working kernel: 7.0.0-30-generic
- Secure Boot disabled; NVIDIA DKMS modules were installed for both kernels.

Steps to reproduce on this machine:
1. Boot 7.0.0-31-generic with NVIDIA driver 580.178.04 installed.
2. The attached monitor has no usable output and nvidia-smi reports: No devices 
were found.
3. Reboot into 7.0.0-30-generic without changing the installed NVIDIA driver.
4. The GPU and monitor work again; nvidia-smi identifies the GTX 1060 3GB and 
driver 580.178.04.

Error messages observed in the failing boot:
- Failed to copy vbios to system memory
- RmInitAdapter failed
- Failed to allocate NvKmsKapiDevice

Expected result:
The GPU initializes and provides display output under 7.0.0-31-generic, as it 
does under 7.0.0-30-generic.

Comparison and limitations:
The failure recurred when the machine booted 7.0.0-31-generic again, and 
reverting to 7.0.0-30-generic restored operation. No GPU initialization errors 
were found in the checked working boot. The installed NVIDIA module and 
userspace versions matched 580.178.04. This points to a regression involving 
the newer kernel and this proprietary driver, but does not establish the 
precise faulty component.

The NVIDIA driver had also recently been updated from 580.173.02 to
580.178.04. I have not tested the older driver against 7.0.0-31-generic.
The key comparison above uses 580.178.04 on both kernels.

Current workaround:
Keep 7.0.0-30-generic selected as the default GRUB entry. Package updates have 
not been held.

This report is based on the observed failing-boot logs and subsequent
working-kernel checks. The machine is currently running the working
kernel; no fresh failing-kernel diagnostic archive is attached because
reproducing it again loses display output. Please advise which
additional diagnostics would be most useful.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2167189

Title:
  GTX 1060 initialization regression: kernel 7.0.0-31 fails with NVIDIA
  580.178.04, while 7.0.0-30 works

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2167189/+subscriptions


-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to