D8602: [platforms/drm] Restore previous mode if an atomic test fails

[David Edmundson]

davidedmundson added inline comments.

INLINE COMMENTS

> drm_output.cpp:918
> +            setGlobalPos(m_lastWorkingState.globalPos);
> +            if (m_primaryPlane) {
> +                m_primaryPlane->setTransformation(m_lastWorkingState.planeTransformations);

we need to communicate this reset back to waylandOutput/waylandOutputDevice

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D8602

To: graesslin, #kwin, #plasma, subdiff
Cc: davidedmundson, ngraham, plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart
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