https://bugs.kde.org/show_bug.cgi?id=454621
--- Comment #13 from Allistar <allista...@gmail.com> --- I have tried with 5.27.4.1 (the currently stable version on Gentoo) and the problem is still there. I have fixed this locally by modifying plasma-workspace/shell/screenpool.cpp by telling it to ignore two of my monitors by their serial number. I'll attach my patch file. The fundamental issue is the same and that's that the code identifies monitors by QScreen.name(). This is not unique. It's possible to have two monitors on the same system with the same name. The name is the xrandr output name. I have these monitors on my system: GPU 1: DVI-I-1, HDMI-0, DVI-D-0, HDMI-1 GPU 2: DVI-I-1, DVI-D-0 Note that there are two monitors that both have the name "DV!-I-1" and "DVI-D-0". The bug is primarily in ScreenPool::handleOutputOrderChanged and handleScreenAdded. The class "OutputOrderWatcher" also has a bug because it's using the screen name to identify the screen. My patch looks in plasmashellrc for a "[IgnoredScreens]" setting which is a list of the serial numbers to ignore. I've modified handleScreenAdded and handleOutputOrderChanged to skip over QScreens that have a matching serial number. A proper fix for this is to not assume the screen name is unique and instead have a method that returns something that is unique. I recommend the screen name prefixed with the DISPLAY number (e.g. ":0.0" or "0.1"). I have used serial number because that works for me but I don't think monitors will always provide a serial number. -- You are receiving this mail because: You are watching all bug changes.
