https://bugs.kde.org/show_bug.cgi?id=442980
--- Comment #15 from Méven Car <[email protected]> --- (In reply to Tim from comment #13) > rep kwin_wayland_drm ~/.local/share/sddm/wayland-session.log > kwin_wayland_drm: drmModeAddFB2WithModifiers is supported on GPU > "/dev/dri/card0" > kwin_wayland_drm: Using Atomic Mode Setting on gpu "/dev/dri/card0" > kwin_wayland_drm: Number of planes on GPU "/dev/dri/card0" : 32 > kwin_wayland_drm: Crtc 98 has properties "MODE_ID"=366, "ACTIVE"=1, > "VRR_ENABLED"=0, "GAMMA_LUT"=363 > kwin_wayland_drm: Crtc 167 has properties "MODE_ID"=310, "ACTIVE"=1, > "VRR_ENABLED"=0, "GAMMA_LUT"=364 > kwin_wayland_drm: Crtc 236 has properties "MODE_ID"=0, "ACTIVE"=0, > "VRR_ENABLED"=0, "GAMMA_LUT"=0 > kwin_wayland_drm: Crtc 305 has properties "MODE_ID"=0, "ACTIVE"=0, > "VRR_ENABLED"=0, "GAMMA_LUT"=0 > kwin_wayland_drm: EGL buffer configs count: 100 > kwin_wayland_drm: Connector 308 has properties "CRTC_ID"=98, > "non-desktop"=0, "DPMS"=0, "EDID"=358, "overscan"not found, "vrr_capable"=0, > "underscan" not found, "underscan vborder" not found, "underscan hborder" > not found, "Broadcast RGB"="Automatic" > kwin_wayland_drm: Connector 347 has properties "CRTC_ID"=167, > "non-desktop"=0, "DPMS"=0, "EDID"=361, "overscan" not found, > "vrr_capable"=0, "underscan" not found, "underscan vborder" not found, > "underscan hborder" not found, "Broadcast RGB"="Automatic" > kwin_wayland_drm: New output on GPU "/dev/dri/card0": "DELL S2721QS/5ML3M43" > kwin_wayland_drm: New output on GPU "/dev/dri/card0": "eDP-1-unknown" > kwin_wayland_drm: Reading output configuration for > KWin::DrmOutput(0x5568aab5afd0, name="eDP-1", geometry=QRect(0,0 1920x1080), > scale=1) > kwin_wayland_drm: Reading output configuration for > KWin::DrmOutput(0x5568aab5b1f0, name="DP-3", geometry=QRect(0,0 3840x2160), > scale=1) > kwin_wayland_drm: Received change event for monitored drm device > "/dev/dri/card0" > kwin_wayland_drm: Reading output configuration for > KWin::DrmOutput(0x5568aab5afd0, name="eDP-1", geometry=QRect(0,720 > 1920x1080), scale=1) So that sort of confirms my thoughts. For whatever reason the Connector for your external screen disappears. The fact that is confirmed in the drm_info output is troubling, kwin should not have any impact on it. So the bug might lower the stack. I can add some debug, since you are using the beta. Once the above merge request lands and I backport it to Kwin 5.23 branch and you have updated packages, we will be able to know a little more. But in the meantime I can't see anything to ask further, unless you can compile from source the branch. Btw what is your GPU ? -- You are receiving this mail because: You are watching all bug changes.
