428089 2020-10-22 08:03:17 +0000 Restarting compositing breaks existing EGLStreams 2022-01-19 15:57:04 +0000 1 1 4 Plasma kwin wayland-generic git master Other Linux RESOLVED FIXED https://bugs.kde.org/show_bug.cgi?id=434715 NOR normal --- 1 vlad.zahorodnii kwin-bugs-null aleixpol alex.wayfer alex765 ekurzinger kde kinofhek mateusbmelchiades mauromol nate postix 0 oldest_to_newest 1967120 0 vlad.zahorodnii 2020-10-22 08:03:17 +0000 SUMMARY In some cases, kwin has to restart compositing. For example, one such case is where user settings have changed. Unfortunately, it also means that kwin needs to destroy window pixmaps, which means that all existing EGLStreams will transition into the "disconnected" state (because the consumer texture has been destroyed). STEPS TO REPRODUCE 1. Change any compositing settings. OBSERVED RESULT Applications that use EGL have no any contents EXPECTED RESULT Applications that use EGL look the same before and after a compositing restart 1967121 1 vlad.zahorodnii 2020-10-22 08:03:55 +0000 CC'ing Erik because he wrote the EGLStreams backend. 1973449 2 ekurzinger 2020-11-09 21:51:11 +0000 This is a tricky issue. Our client-side egl-wayland code really isn't set up to handle the compositor restarting. The client would need some way to become aware of this and send a new attach_eglstream_consumer request, and then re-attach the producer. Incidentally, we're currently working on driver-side support for passing buffers as dma-bufs, and once that's ready we could transition egl-wayland away from using EGLStreams. Then it should be possible to remove all of the EglStreamTexture stuff from kwin. Until then, though, maybe we could just defer applying any settings that require a compositor reset until the next login when using the EGLStreams backend? 2023327 3 vlad.zahorodnii 2021-04-07 19:44:10 +0000 *** Bug 434715 has been marked as a duplicate of this bug. *** 2061484 4 nate 2021-09-16 18:32:39 +0000 *** Bug 442529 has been marked as a duplicate of this bug. *** 2069148 5 kde 2021-10-16 23:20:10 +0000 Removing from VHI. Wayland is not a default, especially on wayland. 2069149 6 kde 2021-10-16 23:20:34 +0000 Removing from VHI. Wayland is not a default, especially on Nvidia. 2095428 7 aleixpol 2022-01-19 15:57:04 +0000 NVIDIA hardware works under GBM now.