Open marmarek opened 6 months ago
One thing to start with is to connect HDMI to something else (a monitor) and see if that still happens
Another debugging idea is to decode pixel data of glitched screen. If it isn't random, but some structured data, it may suggest from where it comes.
I have the same problem with the hw14 worker (System76).
is it the same pattern as in the linked screenshot?
No. The screen flashes green, and sometimes the connection drops with ECONNRESET
.
Then it's rather a different issue.
How to file a helpful issue
Qubes OS release
R4.2
Brief summary
There are a lot of glitches on the HDMI output as captured by the RPi. They are not preventing openQA from working (there are still frames that are clean), but it's very annoying to work with.
Steps to reproduce
Connect to hw12 via VNC, or watch it on openQA-captured video.
Expected behavior
Clean image of HDMI output
Actual behavior
https://openqa.qubes-os.org/tests/93628#step/update2/32 (see video too)
This is likely an issue with RPi capturing the video, maybe some cable is broken (broken shielding or such). But it could be also an issue with the "laptop" itself too (it's a Framework 13 AMD motherboard in the standalone mode). I did not had this issue when connected to a laptop screen.
Interestingly, glitches intensify greatly when there is activity on the wifi card (like downloading updates). Normally it's just flashing horizontal bands, but during network activity, most of the screen is garbled.