Nvidia to AMD swap. Main monitor going black with gpu accelerated task

Same, one should be coming in tomorrow

It’s actually a triple monitor setup but I haven’t had enough display cables to use my third monitor

Found the post again

Flickering is still present here

:crying_cat:

Very sadddddddddddddddddddddddddd

Could you repost the videos somewhere?

It only happens in systemsettings after the upgrade to plasma 6.7, i suspect kwin but i am not a software engineer or something.

Don’t know why I didn’t think to borrow (actually) some Displayport cables until my right angle ones come in (we have a couple of hundred) to test and the issue isn’t happening with all displayport cables.

I’m thinking it might have something to do with the HDMI handshake, maybe a bad cable but I tested with the same two cables I have been using for years now and it would be insane if they both went out at the same time like that.

Not sure if I would call this a solution/fixed since the issue still happens over hdmi.

AMD GPU’s have a limitation on the HDMI spec that’s supported under Linux, due to what had been a licensing conflict between an open-source driver and a closed standard.

Specifically, HDMI 2.1+ has not been supported. It’s generally why I’d recommend DisplayPort cables instead.

Thankfully, a long awaited change to that limitation is just around the corner.

I can’t say whether the issues you’re experiencing relate to that. If I was reading your settings correctly, I would have thought you were sitting safely within or below HDMI 2.0 spec, particularly given you tested the cable and replicated the issue on your 1920x1080 display too.

I guess I’m just noting that AMD GPU’s and HDMI have a bit of a history.

It’s just weird that for 4-5 days I wasn’t having a single issue with it then I started having issues out of nowhere.

My monitors are also only hdmi 2.0 as well