Created attachment 186616 [details] Visual glitches in the Android UI at 165Hz SUMMARY (Sorry if this isn't the right category for the issue, please correct it if it's not) After updating my PC and Plasma from 6.4 to 6.5.1, I started getting black horizontal bars jumping around the screen in Waydroid (UI and apps/games) that look like screen tearing. Lowering my monitor's refresh rate seems to make the situation a lot worse, but the issue goes entirely away when Night Light is on. Waydroid has been up to date before and after the update. STEPS TO REPRODUCE 1. Start Waydroid or an Android app (preferably one with high CPU/GPU usage as it apparently makes the bars appear more often) 2. Move mouse around to trigger glitches OBSERVED RESULT Black bars jumping around on screen EXPECTED RESULT Waydroid and/or Android apps displayed normally without visual glitches as with up to Plasma 6.4 SOFTWARE/OS VERSIONS Operating System: EndeavourOS KDE Plasma Version: 6.5.2 KDE Frameworks Version: 6.19.0 Qt Version: 6.10.0 Kernel Version: 6.16.10-zen1-1-zen (64-bit) (Same behavior on 6.17.7-arch1-1 (64-bit) too) Graphics Platform: Wayland ADDITIONAL INFORMATION Processors: 16 × AMD Ryzen 7 7700X 8-Core Processor Memory: 32 GiB of RAM (30.9 GiB usable) Graphics Processor: AMD Radeon RX 6700 XT The issue was not present until Plasma 6.4.5, or on KDE Neon 251030 Live ISO (Plasma 6.5.1) on the same system from a few quick checks, or my up-to-date laptop plugged to either of my monitors. It also does not appear in OBS. Changing monitor settings besides refresh rate (Adaptive sync, Color Accuracy etc) does not resolve or affect the issue. Waydroid config files are the same stock ones between my laptop and PC if it helps. Unfortunately I don't have a spare disk to install EndeavourOS/Arch on to verify if it's an install-specific issue. Laptop specs in case they matter: Operating System: EndeavourOS KDE Plasma Version: 6.5.2 KDE Frameworks Version: 6.19.0 Qt Version: 6.10.0 Kernel Version: 6.17.7-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 4800H with Radeon Graphics Memory: 32 GiB of RAM (29.3 GiB usable) Graphics Processor: AMD Radeon Graphics
Created attachment 186617 [details] Visual glitches in the Android UI at 60Hz Interesting that there are 2 black bars at 60Hz
Any follow-up on this? The issue is still present. Up-to-date system info in case it is important: KDE Plasma Version: 6.5.4 KDE Frameworks Version: 6.22.0 Qt Version: 6.10.1 Kernel Version: 6.18.4-zen1-1-zen (64-bit) (also present on 6.18.4-arch1-1) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 7700X 8-Core Processor Memory: 32 GiB of RAM (30.9 GiB usable) Graphics Processor: AMD Radeon RX 6700 XT
(In reply to kdalias.njre2 from comment #0) > the issue goes entirely away when Night Light is on. As Waydroid is fullscreen in your videos, that suggests it's limited to direct scanout. You can work around it with https://invent.kde.org/plasma/kwin/-/wikis/Environment-Variables#kwin_drm_no_direct_scanout I can't think of any change that could be responsible for this. The best way to find out what's happening would be if you could do a git bisect between 6.4.0 and 6.5.0.