I use Fedora 40 Workstation - KDE spin. Since an update maybe 2 weeks ago, I’ve been noticing whenever I press Super key + L to get to the lockscreen and then the escape key to immediately black out my monitors - I am not sleeping the computer itself, I get disconnect/reconnect sounds (it appears to be the same sound as when you plug in a USB or display device and unplug it). It continuously repeats every few seconds until I wake the monitors up again.
My first thought was to check the system journal with journalctl
. Unfortunately, after multiple attempts I haven’t been able to correlate any journal entries with when the sound plays (maybe there’s a way to make it more verbose?).
I use two monitors: an LG 27GR83Q (primary) through DisplayPort and an Acer H236HL (secondary) through HDMI. What’s interesting is that if I unplug my secondary Acer monitor, the sound doesn’t repeat anymore.
Neither of my monitors have a USB hubs connected to the computer. The Acer monitor doesn’t even have a USB hub.
I found someone who had the same issue as I do on the KDE forums. However, they switched distros to work around the issue so there’s no solution yet.
I use an AMD RX 7900XT GPU in case that’s important.