https://bugs.kde.org/show_bug.cgi?id=358735
Bug ID: 358735 Summary: Several seemingly related monitor connect/disconnect issues Product: plasmashell Version: master Platform: Archlinux Packages OS: Linux Status: UNCONFIRMED Severity: crash Priority: NOR Component: general Assignee: k...@davidedmundson.co.uk Reporter: t...@r.je CC: bhus...@gmail.com, plasma-b...@kde.org I have a desktop and laptop and both suffer problems with monitors, I'm assuming these are related as the problems are similar. My desktop suffers the problem detailed here: https://bugs.kde.org/show_bug.cgi?id=340267 but with slightly different results: 1. Turn the monitor off 2. Turn the monitor on 3. Sometimes plasma will crash entirely and return to SDDM 3a. Sometimes plasma will still be running but in an unstable state, all window decorations will disappear from opened windows and new programs cannot be launched. Existing programs can be used as normal (although not moved around the screen or minimized/maximized). I have to fix this by restarting SDDM in another TTY Alternative problem: 1. Log out of plasma back to the SDDM login screen 2. Turn off the monitor 3. Turn on the monitor 4. SDDM now displays a black screen and a mouse pointer. The only way to recover is switching to a different TTY and restarting SDDM. This may be an SDDM bug, if it is, it may help you track down the problems with Plasma. Hardware: nvidia GTX 980Ti using nvidia driver + Asus P287Q Secondly, I have different, but similar problems with my laptop Firstly using HDMI out: 1. Sometimes when connecting a HDMI monitor plasma would crash entirely and require restarting SDDM manually. This hasn't happened since 5.5 so may have been resolved, although it was always intermittent. 2. This still happens, after disconnecting a HDMI monitor plasma will become unstable. Programs will crash and odd display issues will appear on the laptop screen, e.g. fuzzy lines on places on the screen and wrongly drawn pixels 3. When a monitor is connected using mini-displayport the laptop screen turns off and the desktop is only displayed on the external monitor. This in itself is likely not a bug, however when pressing the keyboard key to cycle monitor states (e.g. clone, different desktop, etc) different effects occur: 3a. If the external monitor is displaying the desktop and the laptop screen is off, it works fine 3b. If the external monitor is set up as a clone of the laptop screen it works fine 3c. If the external monitor is a separate screen that increases the size of the desktop strange things start to happen: 3c. i) Sometimes the laptop screen will freeze entirely but if I move the mouse around so it appears on the external monitor, I can use the external monitor perfectly, open programs on it and use them (with the laptop screen showing the same frozen image) 3c. ii) Sometimes plasma will become unstable. Programs will crash and new programs cannot be opened. 3c. iii) Sometimes (and this is less frequently than the other two) it will work as expected 4. If I've been using the external monitor in one if its usable states (3a, 3b, 3c. iii) and unplug the monitor, I almost always have to restart SDDM soon afterwards due to crashes and strange behaviour. Hardware: Asus N550 monitor using Intel graphics driver I realise these may be somewhat unreleated, however there is a huge problem with KDE and external monitors. On both my laptop and desktop I have to restart SDDM daily due to issues with unplugging/plugging in/sleeping monitors. Let me know if you'd like me to post any logs (and how to turn them on/find them). Both desktop and laptop are running ArchLinux with up to date packages from their official repos. I do not have the testing repo enabled. Reproducible: Sometimes -- You are receiving this mail because: You are watching all bug changes.