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As of today, my Ubuntu 22.04 PC gets as far as grub, but choosing the default option of "Ubuntu, with Linux 5.15.0-53-generic" leads to a blank and unresponsive screen after only a few lines of kernel messages.

Choosing "Ubuntu, with Linux 5.15.0-52-generic" works.

This is a PC which has been working fine for years: a Ryzen 7 3700X, with AMD Radeon RX5700 GPU.

How can I investigate what has changed between 5.15.0-52-generic and 5.15.0-53-generic?

Edit:

The following line appears to appear in /var/log/syslog during unsuccessful boots:

[ 4.426566] [drm:amdgpu_init [amdgpu]] *ERROR* VGACON disables amdgpu kernel modesetting.

Edit 2:

The following solution does not work: Disables amd gpu kernel : it creates a corrupt image on the screen instead of a black screen, but otherwise remains frozen.

Edit 3:

This bug report looks like the same issue: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1996740

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  • 1
    Same issue. Had to select the previous kernel to boot.
    – Constantine Poltyrev
    Nov 21, 2022 at 17:35

1 Answer 1

Reset to default
0

As per the bug report linked in the question, this has now been resolved. The fix is available through:

sudo apt update
sudo apt upgrade
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