This bug was fixed in the package mutter - 3.38.3-2ubuntu1
---------------
mutter (3.38.3-2ubuntu1) hirsute; urgency=medium
* Merge with debian, containing new upstream release (LP: #1915025)
- Disable CRTCs when system becomes headless (LP: #1905825)
- Fixed crash during windows unmanagement (LP: #1870822)
- Do not handle ungrabbed events when unmanaging (LP: #1880405)
- Downgrade assert to warning when adding window (LP: #1911921)
* d/p/x11-Add-support-for-fractional-scaling-using-Randr.patch:
- Refreshed
* debian/rules: Enable remote desktop for all linux builds (LP: #1730612)
mutter (3.38.3-2) unstable; urgency=medium
* Team upload
* d/patches: Update to commit 3.38.3-12-g2d424a739 from gnome-3-38 branch
- Cope with monitors with metacharacters in their EDID data
- Don't crash if parsing monitor configuration fails
- Don't crash if an extension tries to add the same window to a
workspace more than once, such as auto-move-windows
- Cope with monitor configuration changes during screencasting
- Speed up workspace switching when many windows are open
- Fix Xwayland windows not always appearing in the gnome-shell overview
- Avoid warning spam and poor performance when unmanaging a window
(probably Closes: #970295, LP: #1841774)
mutter (3.38.3-1) unstable; urgency=medium
* Team upload
* d/watch: Only watch for 3.38.x versions
* New upstream release
-- Marco Trevisan (Treviño) <ma...@ubuntu.com> Tue, 09 Feb 2021
04:59:11 +0100
** Changed in: mutter (Ubuntu Hirsute)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1905825
Title:
[SRU] Disable CRTCs when system becomes headless
Status in HWE Next:
New
Status in mutter package in Ubuntu:
Fix Released
Status in mutter source package in Focal:
Fix Committed
Status in mutter source package in Groovy:
Fix Committed
Status in mutter source package in Hirsute:
Fix Released
Bug description:
[Impact]
On new Intel SoCs, after all connectors are unplugged and the system becomes
headless, it cannot detect monitor hotplug event from type-c port.
[Fix]
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1561
Based on "drm/i915 Intel GFX Driver, Hotplug" [1]:
"Finally, the userspace is responsible for triggering a modeset upon
receiving the hotplug uevent, disabling or enabling the crtc as needed."
[Test]
Unplug type-c monitor from an Intel Tiger Lake desktop. Replug the monitor
back, monitor is blank.
With the fix applied, the system can detect monitor again.
[Where problems could occur]
This fix disables CRTCs when there's no monitor, if driver has trouble
dealing with it, we may see something break.
To manage notifications about this bug go to:
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