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

Will this be backported to the LTS 6.x kernels too? Or will it be remain in the 7.x branches only?