After some more research it seems this is actually a kernel display driver bug exposed by a recent mesa change. AFBC is currently broken on mt818* chips but mediatek-drm claims to support it. It only actually started being used with https://gitlab.freedesktop.org/mesa/mesa/-/commit/e0f48568c7f2a638213dee317fde03c23775556f
A temporary fix would be https://gitlab.collabora.com/mediatek/aiot/linux/-/commit/8f40003af37e1567e53fdfcb6446ab4b90755bc0 which disables AFBC in the display driver. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/2103601 Title: 25.0.1 breaks gdm on panfrost To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/2103601/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
