Ubuntu
linux-signed-hwe-6.2 package

  1. Bug #2029362
  2. Comment #0

Comment 0 for bug 2029362

Revision history for this message
Kamikaze (mick-saunders) wrote :

Hardware: Lenovo ThinkPad model 20ST0055AU

Description: Ubuntu 22.04.2 LTS
Release: 22.04
Kernel: 6.2.0-26-generic #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Jul 13 16:27:29 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

What I expected to happen:
Using Lenovo dock via Thunderbolt connector, and with two DisplayPort monitors connected for three monitors in total. Display should be usable, and in fact _does_ work with 5.19.

What happened instead:
When attempting to use any ubuntu kernel > 5.19 I have had garbled output on the DisplayPort monitors.

I've attached a picture taken with my phone on bootup while prompted for the disk encryption password.

The GUI also displays in a similar garbled fashion if I let it boot further and is unusable.

Unfortunately I don't have the dock details at the moment, but it's a Lenovo thunderport dock of some sort. I will obtain the details tomorrow and update this bug report then.