This bug was fixed in the package mutter -
3.28.4+git20200505-0ubuntu18.04.2
---------------
mutter (3.28.4+git20200505-0ubuntu18.04.2) bionic; urgency=medium
* debian/patches: Cherry-pick patch to make mutter compile with newer mesa
(LP: #1896825)
mutter (3.28.4+git20200505-0ubuntu18.04.1) bionic; urgency=medium
* New upstream git snapsnot
- monitor-manager: use MonitorsConfig to track switch_config
- monitor-manager: Don't use switch-config when ensuring configuration
- core: Avoid consecutive workspace changes in window construction
- core: propagate the effective on-all-workspaces setting to transient
window
- window: Really propagate effective on-all-workspaces setting to transients
- monitor-config-manager: Fallback to closed laptop lid configuration
(LP: #1793496)
* debian/control*: update VCS informations to point to ubuntu salsa branch
* d/p/monitor-manager-Don-t-use-switch-config-when-ensuring-con.patch,
d/p/monitor-manager-use-MonitorsConfig-to-track-switch_config.patch,
d/p/screen-Destroy-window-actors-after-windows-while-unmanagi.patch,
d/p/screen-Unset-the-active-workspace-and-remove-workspaces-o.patch,
d/p/stack-Add-a-function-to-get-a-sorted-list-of-focus-candid.patch,
d/p/test-runner-Add-assert_focused-command.patch,
d/p/test-runner-Add-dispatch-command.patch,
d/p/test-runner-Add-sleep-command.patch,
d/p/tests-Add-accept_focus-command-to-runner-and-client.patch,
d/p/tests-Add-can_take_focus-command-to-runner-and-client.patch,
d/p/tests-Verify-focused-window-in-closed-transient-tests.patch,
d/p/tests-stacking-Add-tests-with-no-input-and-no-take-focus-.patch,
d/p/window-Emit-an-error-and-return-when-trying-to-activate-a.patch,
d/p/window-x11-Accept-any-focusable-window-as-fallback-focus.patch,
d/p/window-x11-Don-t-double-check-for-unmanaging-windows.patch,
d/p/window-x11-Focus-a-window-in-the-active-workspace-as-take.patch,
d/p/window-x11-Focus-the-default-window-with-delay-while-wait.patch,
d/p/window-x11-Use-any-focusable-window-as-fallback-delayed-f.patch,
d/p/workspace-Focus-only-ancestors-that-are-focusable.patch:
- Dropped, included in the git snapshot already
-- Marco Trevisan (Treviño) <ma...@ubuntu.com> Wed, 23 Sep 2020
21:29:30 +0200
** Changed in: mutter (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1793496
Title:
scaling changes when closing/re-opening the lid
Status in Mutter:
New
Status in mutter package in Ubuntu:
Fix Released
Status in mutter source package in Bionic:
Fix Released
Status in mutter source package in Focal:
Fix Released
Bug description:
[ Impact ]
scaling changes when closing/re-opening the lid. Seen in bionic.
My scaling is set to 100%, but the laptop is considered highdpi by
mutter, and during suspend/resume it changes back to default ignoring
settings.
$ xprop -spy -root RESOURCE_MANAGER
[...]
RESOURCE_MANAGER(STRING) =
"*customization:\t-color\nXft.dpi:\t192\nXft.antialias:\t1\nXft.hinting:\t1\nXft.hintstyle:\thintslight\nXft.rgba:\trgb\nXcursor.size:\t48\nXcursor.theme:\tDMZ-White\n"
RESOURCE_MANAGER(STRING) =
"*customization:\t-color\nXft.dpi:\t96\nXft.antialias:\t1\nXft.hinting:\t1\nXft.hintstyle:\thintslight\nXft.rgba:\trgb\nXcursor.size:\t24\nXcursor.theme:\tDMZ-White\n"
xrandr
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
eDP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y
axis) 309mm x 174mm
2560x1440 60.00*+ 59.99 59.99 59.96 59.95
[ Test case ]
In a laptop with HiDPI screen, force the scaling to 1:
Run this and close the lid:
xprop -spy -root RESOURCE_MANAGER
Once reopened the value should not change and if it does the
`Xft.dpi:\t96` value should stay constant, and not change to 192.
[ Regression potential ]
Wrong resolution is set for the laptop lid
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