https://bugs.kde.org/show_bug.cgi?id=486504
--- Comment #9 from Zamundaaa <xaver.h...@gmail.com> --- (In reply to Michael Butash from comment #4) > Is it DP output to DP input, or some mode conversion to HDMI? > > I have this happen almost clockwork after a suspend awaken, reboot, even > just a glitch of the power to the dock or something, and seems to come > largely from having to use DP on dock to HDMI on TV conversion. Often I'll > see the display after reset come up instead of my Samsung TV's I use to > display as generic "NVidia 640x480", and is usually all xrandr sees as well, > indicating like the conversion chip in the cable/adapter glitches and EDID > data doesn't resolve correctly on the host. I often have to end up > unplugging physically and resetting the DP end of the cable/adapter to fix > it. That's a NVidia driver bug, the proprietary driver has some issues with reading the EDID sometimes. You can report it at https://forums.developer.nvidia.com/c/gpu-graphics/linux/148 (In reply to Kalzi from comment #8) > I have attached three txt files that have the output of drm_info for before, > during and after Okay, so the driver reports the correct mode list, and KWin has actually set the 640x480 mode. Can you also attach the output of > kscreen-doctor -o and > wayland-info while the output is wrongly in that 640x480 mode? What I suspect is happening is that the driver temporarily reports 640x480 as the only supported mode at some point after the display goes to standby, and KWin doesn't automatically switch back to the correct mode (which shouldn't be very complicated to fix). If the display settings doesn't let you set the right mode though, there might be more going on -- You are receiving this mail because: You are watching all bug changes.
