Problem with multiple monitors on Kubuntu
Problem with multiple monitors on Kubuntu
Hey everyone, I’ve moved to Linux and’m still enjoying gaming. So far it’s been great except with my monitors. I’m using three Dell panels connected to a 3080ti. The left one is 4K at 60Hz, the center is 1440p at 165Hz with G-Sync, and the right is 4K at 60Hz. My central monitor is set as primary, but it doesn’t hit 165Hz and seems stuck at 60Hz, tethered to the left screen. If I turn off both 4K displays, it works at 165Hz with G-Sync on the center screen. Is there a way to keep everything enabled and have my central screen run properly?
Checking the monitor settings in the Nvidia control panel versus system configurations. Confirming Kubuntu version along with KDE, Plasma, and Qt versions. Identifying the graphics driver and hardware specifications.
Initially configured using Nvidia but also experimented with alternatives. System details include Kubuntu 22.04, KDE Plasma 5.27.4, KDE framework 5.104.0, Qt 5.15.8. Driver version 535.113.01 paired with an RTX 3080 Ti.
You configured each monitor separately. Your 165Hz cable works fine. The issue seems linked to the display port cable—signal loss when going down clock and renegotiation afterward. It doesn’t appear to happen after monitors sleep or at the right frequency; it jumps back to 60Hz during gameplay.
It felt similar after the fresh setup. The cables seemed perfect. After some adjustments to fix the issue, I ended up completely messing with my installation. I decided to test Pop OS using their NVIDIA ISO. Each display runs at the right refresh rate without G-Sync on the 165Hz screen, though I’m okay with that. It’s a bit disappointing switching from KDE to GNOME since I prefer KDE. I’m not sure what additional features are enabled in the NVIDIA Pop ISO. It uses the same driver I installed on Kubuntu. I wonder if the difference between KDE and GNOME matters much. I hope the upcoming updates bring better support for NVIDIA drivers moving from X11 to Wayland. If things keep going smoothly, we should soon enjoy a smooth gaming experience on Linux. Thanks to Valve for making this possible. Appreciate your help! Wishing you all the best!
Wayland is required for optimal multi-monitor functionality. The latest 545 Beta seems to provide strong Wayland compatibility along with VRR support, but you may need to wait about a month—or possibly sooner—for improvements.