Twice today, the system has failed to provide the KDE login screen (SDDM) when the display comes out of sleep mode, on an X11 session. This has happened on Tumbleweed, fully-upgraded, installed to both an HDD and an external USB SSD.
This has so far, not occurred with a Wayland session.
System would be used normally, then I leave the desktop for 5-10 minutes. When I get back, the display is correctly in sleep mode (Samsung 22-inch monitor, blue power light is blinking). When pressing the space bar, the display goes live, but only the mouse pointer icon is shown on the screen, the display is otherwise black. It does not produce the login screen. The first time this occurred, I had to power down the system to resume using it.
The second time this occurred was when using Tumbleweed on the external SSD. I hit CTL-ALT-BACKSPACE, which apparently killed the X11 session and was able to login again.
Was there a recent upgrade to an X11-related package that is causing this?
I looked at /var/log/Xorg.0.log and Xorg.0.log.old and there were no errors listed in either.
This is the GPU information from inxi, but the current login session is Wayland.
~> inxi -G
Graphics:
Device-1: AMD RS780L [Radeon 3000] driver: radeon v: kernel
Display: wayland server: X.org v: 1.21.1.11 with: Xwayland v: 23.2.4
compositor: kwin_wayland driver: X: loaded: radeon
unloaded: fbdev,modesetting,vesa dri: r600 gpu: radeon
resolution: 1920x1080
API: EGL v: 1.5 drivers: kms_swrast,r600,swrast
platforms: gbm,wayland,x11,surfaceless,device
API: OpenGL v: 4.5 compat-v: 3.3 vendor: mesa v: 24.0.3 renderer: AMD
RS780 (DRM 2.50.0 / 6.8.1-1-default LLVM 18.1.1)
API: Vulkan Message: No Vulkan data available.
Thanks in advance.