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No Signal issue with KDE that I don't have with GNOME (sh.itjust.works)

submitted 1 week ago by [email protected] to c/[email protected]

4 comments fedilink hide all child comments

It's hard to search for this problem and find any relevant results. Any ideas would be appreciated.

Issue:

Computer behaves normally until I turn my TV off. The computer is hooked to an Audio/Video Receiver via HDMI. I use a Geforce 4070ti, RPM Fusion drivers following the wiki guide.

When I turn the TV off nothing happens for a few seconds until the receiver detects that the TV is off. Then I hear the KDE login/logout jingle repeatedly with their SFX overlapping/garbled. I hear this because I'm using Digital Optical output for audio from the PC, and the receiver is left on.

Next when I go to turn the TV back on, I get no signal, but the computer isn't crashed or anything, just no video signal.

This is on a fresh install of Fedora 41 KDE Spin, fully updated.
I've tried disabling sleep, disabling the lock screen, disabling screen dimming, blanking, all their timers, set power profile to performance. None of this made any difference.

Corei5 12th gen 64GB DDR5 5200 RAM 4070ti 12GB NVME SSD

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[–] [email protected] 2 points 5 days ago (2 children)

I had a similar issue on nobara. I have 3060ti and I use tv with HDMI. No signal when trying to resume after pc had suspended or tv had turned off. Never found a solution, but there was a little workaround though: first ctrl+alt+F(1-4), whichever gets you the terminal thingy, then alt+F(1-4) should get you to login screen.

After not finding any usable advice from forums, I asked AI for help and it suggested a script that automates changing tty. I didn't test it though, seemed easier to just go back to mint.

[–] [email protected] 2 points 1 day ago (1 children)

I may have found the issue:

https://forums.developer.nvidia.com/t/bug-570-124-04-freeze-on-monitor-wakeup-flip-event-timeout/325659/26

[–] [email protected] 1 points 1 day ago

Might be a separate issue from mine then. This happened since kernel 6.2 (that i remember testing with) and nvidia driver version 525, up to the current ones 6.13 and 570. On the forum they have 2 monitors and primary wakes up, I only have one. Seems that nvidia has had lots of similar issues, but nobara definitely has done something weird with HDMI or nvidia.

[–] [email protected] 1 points 5 days ago* (last edited 5 days ago)

I'm curious too if it's distro specific. I'll try logging in thru TTY once home. If there's no solution I'll have to try Debian or Arch. Unfortunate, I found Fedora to be the best middle ground. KDE matters more to me I guess.