Comment 2 for bug 1930359

Revision history for this message
Matthew Ruffell (mruffell) wrote : Re: gdm fails to start with latest mutter 3.36.9-0ubuntu0.20.04.1 in focal-updates

I spent some time attempting to reproduce on AWS today, using a g4dn.xlarge instance, which has a Nvidia Tesla T4 GPU, which supports GRID.

I installed ubuntu-desktop-minimal and rebooted, and gdm started fine with mutter 3.36.9-0ubuntu0.20.04.1. I confirmed this by looking at the instance screenshot.

I then downloaded and installed the Nvidia GRID 450.51.05 driver, and rebooted. The system came up, I checked lsmod, the nvidia kernel modules were loaded, and the instance screenshot shows gdm running. I then installed VMware Horizon Agent 7.13.0-17123958 and rebooted, and again, gdm started just fine.

Attached status of gdm3.service, nvidia-smi and instance screenshot.

I wonder if this is GPU specific? or hypervisor specific, since the affected user runs on VMware esxi. I will again ask for more information.

But for the moment, this seems very specific to the affected user's environment, and not a widespread regression.