Disabling fractional scaling after selecting another integer scaling may unselect user choice

Bug #1887707 reported by Marco Trevisan (Treviño) on 2020-07-15
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
gnome-control-center (Ubuntu)
Low
Marco Trevisan (Treviño)
Focal
Low
Marco Trevisan (Treviño)

Bug Description

[ Impact ]

If selecting another integer scaling after disabling fractional scaling

[ Test case ]

When running Ubuntu session under X11, in gnome-control-center, display panel:
 - Ensure 100% scaling is selected and applied
 - Enable fractional scaling
 - Select 200% scaling (or bigger integer scaling)
   - Green "Apply" button should be visible and clickable
 - Deactivate fractional scaling
   - Green "Apply" button stays and fractional scaling isn't disabled until applied

Repeat with inverted scaling orders (applying 200% and then selecting 100%)

Currently, once another integer value is selected, we just deselect the user choice and restore the previous one, deactivating the fractional scaling promtply.

[ Regression potential ]

- Displays are wrongly disposed and configured when fractional scaling is enabled
- Configurations are not applicable.

description: updated
Changed in gnome-control-center (Ubuntu Focal):
status: New → In Progress
importance: Undecided → Low
assignee: nobody → Marco Trevisan (Treviño) (3v1n0)
Changed in gnome-control-center (Ubuntu):
status: In Progress → Fix Committed
Changed in gnome-control-center (Ubuntu Focal):
status: In Progress → Fix Committed
tags: added: focal groovy

Hello Marco, or anyone else affected,

Accepted gnome-control-center into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gnome-control-center/1:3.36.4-0ubuntu2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

tags: added: verification-needed verification-needed-focal
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