Bug#1142038: More precisions on testing

Hey,

I wanted to add a precision about a message a sent earlier:

>   * The bug seems to happen on my machine, regardless of whether it was
>     on Trixie or Sid
I did not mention having tested Bookworm, not because there was no bug 
but rather because I didn't test.

So I did tests on few other Debian versions:

- Debian Stretch: No bug but the absence of amdgpu is probably what 
caused the bug to show in the first place, so the test looks invalid

- Debian Buster: Same as Stretch

- Debian Bullseye: This version is affected (tested with the same 
environment as Trixie, with amdgpu present)

Bookworm was not tested but it is safe to assume this version is also 
affected.

I wanted to add this precision because it directly affects Bookworm and 
Bullseye which are still LTS.

Regards.