graesslin created this revision. graesslin added reviewers: KWin, Plasma on Wayland. Restricted Application added subscribers: kwin, plasma-devel. Restricted Application added projects: Plasma on Wayland, KWin.
REVISION SUMMARY If it's not possible to create a buffer to blank the output, KWin won't be able to render to the output. In that case the output should not be added to the list of outputs. To support this DrmOutput::blank and DrmOutput::init return bool to indicate whether they succeeded. DrmBackend handles this situation and doesn't add the output to the list of outputs if init failed. If after init there are no outputs KWin is in a state where it won't be functional. Thus the platform emits the initFailed signal to terminate. BUG: 365242 FIXED-IN: 5.7.1 TEST PLAN No hardware to reproduce the condition REPOSITORY rKWIN KWin BRANCH drm-failed-blank-5.7 REVISION DETAIL https://phabricator.kde.org/D2135 AFFECTED FILES plugins/platforms/drm/drm_backend.cpp plugins/platforms/drm/drm_output.cpp plugins/platforms/drm/drm_output.h EMAIL PREFERENCES https://phabricator.kde.org/settings/panel/emailpreferences/ To: graesslin, #kwin, #plasma_on_wayland Cc: plasma-devel, kwin, hardening, jensreuterberg, abetts, sebas
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