** Description changed:
+ [ Impact ]
+
On my laptop's 15.6 inch, 3840 x 2160 pixel (282 PPI) display, the
- available scaling options in the gnome-control-center (version:
- 1:3.30.0-0ubuntu1, on Cosmic) display settings are limited to 100, 200,
- 300, and 400%. This is insufficient as 200% is too small and 300% is too
- large. The missing fractional scaling options are dealt with in bug
- #1687246. However, the currently available experimental feature to
- enable fractional scaling (provided in the bug description of #1687246)
- does not solve the problem on my machine:
+ available scaling options in the gnome-control-center display settings
+ are limited to 100, 200, 300, and 400%. This is insufficient as 200% is
+ too small and 300% is too large. The missing fractional scaling options
+ are dealt with in bug #1687246. However, the currently available
+ experimental feature to enable fractional scaling (provided in the bug
+ description of #1687246) does not solve the problem on my machine:
gsettings set org.gnome.mutter experimental-features "['scale-monitor-
framebuffer']"
After applying and rebooting, the options offered change to 100, 125,
150, 175, and 200%. Note that there is no value larger than 200% which
is too small on this display at least for me.
In addition, the 25% steps enabled by the experimental option seem too
far apart. With 200%, I am using a font scaling value in Gnome Tweaks of
1.20, so I suppose a fractional scaling of approx 240% would be
equivalent.
In bug #1687246, Daniel van Vugt (vanvugt) advised to open a new bug for
gnome-control-center and added that "gnome-control-center seems to limit
the scale to 200% on some machines, 300% on others. And I think I have
seen 400% offered in some cases. I don't know why, but the inconsistency
is definitely annoying."
- ProblemType: Bug
- DistroRelease: Ubuntu 18.10
+ [ Test case ]
+
+ In a setup with a display with HighDPi resolution (higher than 2880x1800)
+ - Open gnome-control-center display panel
+ - Scaling should show 5 level buttons to select
+ - Selecting higher values will show all the selectable values closer to the
chosen one
+ - Any value could be used from 100% up to 400% (maximum varies on resolution)
+
+ [ Regression potential ]
+
+ Control center won't show any scaling value, or scaling value may be
+ wrong.
+
+ ---
+
+ ProblemType: BugDistroRelease: Ubuntu 18.10
Package: gnome-control-center 1:3.30.0-0ubuntu1
Uname: Linux 4.19.0-041900rc5-generic x86_64
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 1 19:29:11 2018
InstallationDate: Installed on 2018-09-13 (17 days ago)
- InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180912)
- SourcePackage: gnome-control-center
+ InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64
(20180912)SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
** Changed in: gnome-control-center (Ubuntu)
Status: Triaged => In Progress
** Changed in: gnome-control-center (Ubuntu)
Status: In Progress => Fix Committed
** Changed in: gnome-control-center (Ubuntu Hirsute)
Status: Triaged => In Progress
** Changed in: gnome-control-center (Ubuntu Focal)
Status: Triaged => In Progress
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https://bugs.launchpad.net/bugs/1795483
Title:
Experimental setting to enable fractional Hi-DPI scaling offers no
option larger than 200% on 15.6 inch, 3840 x 2160 pixel display (Dell
XPS 15 9575)
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