Public bug reported:
On my laptop's 15.6 inch, 3840 x 2160 pixel display, the available
scaling options in the Gnome 3.30.1 (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:
gsettings set org.gnome.mutter experimental-features "['scale-monitor-
framebuffer']"
After applying and rebooting, the options offered change to 125, 150,
175, and 200%. Note that there is no value larger then 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) therefore 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
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
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug cosmic third-party-packages wayland-session
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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)
Status in gnome-control-center package in Ubuntu:
New
Bug description:
On my laptop's 15.6 inch, 3840 x 2160 pixel display, the available
scaling options in the Gnome 3.30.1 (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:
gsettings set org.gnome.mutter experimental-features "['scale-monitor-
framebuffer']"
After applying and rebooting, the options offered change to 125, 150,
175, and 200%. Note that there is no value larger then 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) therefore 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
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
UpgradeStatus: No upgrade log present (probably fresh install)
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