this post was submitted on 14 Nov 2023
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So...I have an...interesting behavior I've never had before with an Nvidia or integrated intel chipsets...I have now my AMD card plugged both to a normal HDMI monitor, and then to another HDMI TV. Both work well. However, when I turn the TV off... The monitor will start flickering. About three flickers every minute or so. It's not a signal loss also, I can see it's drawing for a brief split second the windows that were drawing on the TV area, so it's kinda rearranging the whole desktop area...then it resets. It does this 3 times, the whole ordeal last a couple seconds, in which everything is unusable because of the flicker, and focus going to all sorts of places. If I turn the TV back on, the behavior stops immediately.

Any idea what's causing this, and how can I sort it out? I'm using KDE Neon latest (it's still Ubuntu 22.04), with an AMD 7800XT, with kisak's ppa. Running an updated kernel 6.5.0-1007-oem. (I followed these instructions to get it working at all)

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[–] mvirts@lemmy.world 6 points 1 year ago (1 children)

Thinking that the TV is periodically connecting and your desktop environment is trying to switch to dual monitors before quickly losing the TV connection.

[–] iturnedintoanewt@lemm.ee 2 points 1 year ago

I think it's indeed related to detecting the TV on and off. On the previous PC (this one is just brand new) this didn't happen.