This bug may be related to https://bugs.kde.org/show_bug.cgi?id=365602, but I'm not sure, so I report a new one. My computer has two nvidia-based video cards (latest nvidia driver) and 3 physical monitors ; each one is a separate X screen and xrandr is unavailable. I'm currently running Ubuntu 2012 for 4 years because it has the last version of KDE to support my configuration (KDE SC 4.9.5). Often since, I've tried to update to the last version with no success ; others like Gnome or LXDE works ok, but KDE does not. Last weekend for the first time I had limited success, which lead me to the bug referenced at the top of this post. I've installed the last Ubuntu with the last packages from the Neon unstable repository ; now KDE starts but with the following symptom: - when KDE start all three monitors show the KDE logo but the two non-main monitors go quickly black - the main monitor works OK, the other two are black but seems to be working "offscreen" : if I take a window and drag it to a second monitor, I see the "moving window" mouse cursor. It feels like there's a black mask between the window and the mouse cursor. Unpluging or disabled the screen don't change anything. How can I help debug this problem? Thanks in advance
info center gives: plasma version 5.7.90 frameworks version 5.25.0 qt version 5.7.0 kernel version 4.4.0-34
Using the "desktop cube" feature, I can see the cube on all 3 monitors, but the windows are invisible
I just discovered that if I uncheck "enable composer at startup", the 3 monitors works...
Is this bug still happening on newer Plasma versions?
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!