Created attachment 157373 [details] photo of PP when plasma-mobile does not start on kwin 5.27.2 SUMMARY Hi and thank you for developing kwin! On my OG PP with Mobian bookworm, plasma-mobile 5.27.2 is no more working since kwin 5.27.2 hit the testing repo. Please note, plasma-mobile 5.27.2 was working correctly on top of kwin 5.26.90 and downgrading kwin back to 5.26.90 reverts back to a working state. Additionally, another Mobian user reported this on Matrix on their Pinetab. After logging in, a white rectangle in the top right corner appears on top of black background. Nothing else happens, GUI never appears. By comparing the journalctl log with a previous one, the following line seems new mar 12 21:10:59 mobian kwin_wayland_wrapper[977]: libkwinglutils: Shaders are not supported Furthermore, by git bisecting kwin, problems starts happening after commit eef9bd5c [1]. Looks to me, that commit is identifying if some low-spec devices are present, thus setting some flags to disable features which run smoothly on higher-spec systems only. Driver for OG PP video rendering (Lima) is also mentioned in that commit. Just guessing, that commit is setting device as unable to do a bunch of things (including shaders, as of error message), but it's failing to keep some other part of kwin from triggering those things? Is there a way to tell plasma-mobile to not use shaders, like [2] for blur? That could be a temporary workaround [1] https://invent.kde.org/plasma/kwin/-/commit/eef9bd5c4e564e9cbca6188c52cb3cee5ab9c825 [2] https://invent.kde.org/plasma-mobile/plasma-phone-settings/-/blob/master/etc/xdg/kwinrc#L6 SOFTWARE/OS VERSIONS Linux: 6.1-sunxi64 KDE Plasma Version: 5.27.2 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8
Created attachment 157374 [details] journalctl log of PP when starting plasma-mobile on kwin 5.27.2
This is fixed in 5.27.3
(In reply to Zamundaaa from comment #2) > This is fixed in 5.27.3 Thank you for your feedback! To be sure, the relevant commit is 64d682a6 [1] , right? I'm asking because Debian is now in hard freeze for upcoming bookworm release: 5.27.3 will not be accepted, but I will ask kwin's maintainer for cherry-picking the commit to fix this... [1] https://invent.kde.org/plasma/kwin/-/commit/64d682a646d111a0250bbe3bff77ef0cead91403
yes, that's the one