Currently bug 1930359 seems to have nothing to do with this fix, based on the latest comment 8.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1905825 Title: [SRU] Disable CRTCs when system becomes headless Status in HWE Next: New Status in OEM Priority Project: New Status in mutter package in Ubuntu: Fix Released Status in mutter source package in Focal: Fix Released 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: https://bugs.launchpad.net/hwe-next/+bug/1905825/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
