isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2025-01-11 12:12:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

monitor-manager-xrandr: Disable CRTCs if there is no monitor

Browse Source 
After last monitor gets unplugged from the system, hotplug detection may
no longer work on Intel GFX.

This is because we didn't trigger a modeset to disable CRTCs, and i915
requires it to make hotplug detection continue to work [1].

There's no guarantee that DPMS off in DDX also disables CRTCs, so
explicitly disable CRTCs to solve the issue.

[1] https://www.kernel.org/doc/html/latest/gpu/i915.html#hotplug

https://gitlab.freedesktop.org/drm/intel/-/issues/2602

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1561>
This commit is contained in:
Kai-Heng Feng 2020-11-13 14:19:26 +08:00
parent e5b07138f0
commit ed87937faf
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/backends/x11/meta-monitor-manager-xrandr.c
View File

@ -456,6 +456,9 @@ apply_crtc_assignments (MetaMonitorManager *manager,
meta_crtc_unset_config (crtc);
}
if (!n_crtcs)
goto out;
g_assert (width > 0 && height > 0);
/* The 'physical size' of an X screen is meaningless if that screen
* can consist of many monitors. So just pick a size that make the
@ -555,6 +558,7 @@ apply_crtc_assignments (MetaMonitorManager *manager,
(GFunc) meta_output_unassign_crtc,
NULL);
out:
XUngrabServer (manager_xrandr->xdisplay);
XFlush (manager_xrandr->xdisplay);
}
@ -601,6 +605,9 @@ meta_monitor_manager_xrandr_apply_monitors_config (MetaMonitorManager *mana
if (!config)
{
if (!manager->in_init)
apply_crtc_assignments (manager, TRUE, NULL, 0, NULL, 0);
meta_monitor_manager_xrandr_rebuild_derived (manager, NULL);
return TRUE;
}