<table><tr><td style="">fvogt accepted this revision.<br />fvogt added a comment.<br />This revision is now accepted and ready to land.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D8752" rel="noreferrer">View Revision</a></tr></table><br /><div><div><p>I tried this patch and kwin still crashes in QEMU, but at a different place now at least:</p>
<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">#0 KWin::DrmOutput::pixelSize (this=0x0) at /usr/src/debug/kwin-5.11.90git.20171108T174438~9df174483/plugins/platforms/drm/drm_output.cpp:162
#1 0x00007fffdcccfca9 in KWin::DrmCrtc::blank (this=0x555555889a10)
at /usr/src/debug/kwin-5.11.90git.20171108T174438~9df174483/plugins/platforms/drm/drm_object_crtc.cpp:85
#2 0x00007fffdccd1398 in KWin::DrmOutput::~DrmOutput (this=0x555555843240, __in_chrg=<optimized out>)
at /usr/src/debug/kwin-5.11.90git.20171108T174438~9df174483/plugins/platforms/drm/drm_output.cpp:68
#3 0x00007fffdccd1699 in KWin::DrmOutput::~DrmOutput (this=0x555555843240, __in_chrg=<optimized out>)
at /usr/src/debug/kwin-5.11.90git.20171108T174438~9df174483/plugins/platforms/drm/drm_output.cpp:87
#4 0x00007fffdccc9912 in KWin::DrmBackend::updateOutputs (this=this@entry=0x5555557cb500)
at /usr/src/debug/kwin-5.11.90git.20171108T174438~9df174483/plugins/platforms/drm/drm_backend.cpp:460
#5 0x00007fffdccca81d in KWin::DrmBackend::openDrm (this=0x5555557cb500)
at /usr/src/debug/kwin-5.11.90git.20171108T174438~9df174483/plugins/platforms/drm/drm_backend.cpp:326
#6 0x00007ffff5a0ffec in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#7 0x00007ffff7b1c9e2 in KWin::LogindIntegration::hasSessionControlChanged (this=<optimized out>, _t1=<optimized out>, _t1@entry=true)
at /usr/src/debug/kwin-5.11.90git.20171108T174438~9df174483/build/kwin_autogen/EWIEGA46WW/moc_logind.cpp:188</pre></div>
<p>At this point <tt style="background: #ebebeb; font-size: 13px;">export KWIN_DRM_NO_AMS=1</tt> helps though and the session starts up. Unfortunately kwin_wayland gives up just after these messages:</p>
<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">kscreen.kwayland: Loading Wayland backend.
kscreen.kded: PowerDevil SuspendSession action not available!
kscreen.kwayland: Loading Wayland backend.
kwin_wayland: Couldn't find current GLX or EGL context.</pre></div>
<p>and crashes somewhere in the destructors of Qt's global objects.</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R108 KWin</div></div></div><br /><div><strong>BRANCH</strong><div><div>drm-property-safety</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D8752" rel="noreferrer">https://phabricator.kde.org/D8752</a></div></div><br /><div><strong>To: </strong>graesslin, KWin, Plasma, fvogt, subdiff<br /><strong>Cc: </strong>plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart<br /></div>