SUMMARY I have a DELL xps 15 (l501x) laptop with KDE (Fedora 37 with plasma 27.3). I closed the lid and immediately opened it after the display went dark. At this point my session was locked with a black screen. I killed the power by holding the power button. Since then I cannot login to that account anymore (I get to the login screen, can enter the credentials and press enter, after this the black screen) As a workaround I I created a new user (after logging in as root) and that user works fine. Following a suggestion at reddit.com/r/kde I used the new account to type (as root) loginctl unlock-sessions but this did not help. Perhaps there is a config file or something that I need to delete? I would like to be able to access my account in KDE, I did not expect it was so easy to get locked out :-( STEPS TO REPRODUCE 1. cl.ose laptop lid 2. open laptop lid immediately after the screen goes dark. OBSERVED RESULT Black screen, no response to keypresses. Cannot use the virtual terminals CTRL-F1 etc. CTRL-F2 shows the login screen grayed out, but unresponsive. Laptop fan is blowing and I see some disk activity. It is almost as if the session is started normally but there is a problem with the power state so the display does not work. How to reset this? EXPECTED RESULT Computer is either asleep (flashing on-button, I should be able to press the button once to wake up) OR wakes up. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION The laptop has (in Fedora) two screens, the primary screen uses the graphics of the intel processor, the secondary screen uses an nvidea graphics card. Not sure if this info is useful...
In the session (looking at a black screen), I can press CTRL-ALT-DEL and then enter, and the computer shuts down. Perhaps everything is running, but it is just the screen that is black?
Additional information: 1. After I log in, I see the monitor backlight switch off, as when the monitor goes to sleep. The monitor then stays off and also does not wake on key strokes or mouse movement. 2. I can press CTRL-ALT-DEL and then enter to log out, or I can press the power button once, which I configured to shut down. Then the laptop shuts down. Perhaps the session starts and runs normally, but somehow KDE causes the backlight of the monitor to switch off, exactly like it did when I closed the lid the last time that it still was switched on. But the backlight is now stuck in this position and also KDE does not wake up the monitor anymore. How to restore the power configuration without removing the user account? I tried moving my .config directory to .config_old but this did has no effect on the problem.
I finally managed to solve this by choosing X11 instead of Wayland. So the conclusion, which I verified multiple times, is that something related to Wayland, and outside of the .config directory, causes my screen to go black immediately after logging in. I changed the component to plasma-wayland-protocols, that is the only one that seemed to fit.
Please enter which version you are referring to.
from the x11 session please run kwin_wayland and see if a nested kwin can be launched or if it provides some more actionable errors.
[john@fedora ~]$ kwin_wayland [a window opens saying ...... press right control key to grab input, the following is the command line output] No backend specified, automatically choosing X11 because DISPLAY is set kf.globalaccel.kglobalacceld: Failed to register service org.kde.kglobalaccel OpenGL vendor string: Intel OpenGL renderer string: Mesa Intel(R) HD Graphics (ILK) OpenGL version string: 2.1 Mesa 22.3.7 OpenGL shading language version string: 1.20 Driver: Intel GPU class: Unknown OpenGL version: 2.1 GLSL version: 1.20 Mesa version: 22.3.7 Linux kernel version: 6.2.8 Requires strict binding: no GLSL shaders: yes Texture NPOT support: yes Virtual Machine: no kwin_core: eglPostSubBufferNV not supported, have to enable buffer preservation - which breaks v-sync and performance kwin_core: Parse error in tiles configuration for monitor "d3b3d9bc-06de-5748-bbfe-56dd26acb3ce" : "illegal value" Creating default setup kwin_xkbcommon: XKB: inet:323:58: unrecognized keysym "XF86EmojiPicker" kwin_xkbcommon: XKB: inet:324:58: unrecognized keysym "XF86Dictate"
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!
apparently I forgot to set the state to reported.
This bug is a crash report that is over a year old without any activity, as our software is always changing, the information in this ticket is unlikely to still be useful. If this issue is still reproducible in a newer version of kwin (5.27.5 or 6.0) please reopen this ticket with a bumped version number or it will be closed in 30 days.
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!