i can observe no fractional scaling on a default installation dell xps5790 even
with a single monitor (4k).
Connecting a second monitor the scaling is not working separately either.
The most obvious effect is that the right side (top bar) goes off screen.
I tried scaling with different display resolution to no avail.
I eventually started just using a lower display resolution and gave up
on fractional scaling.
nvidia 450
libmutter-6-0:
Installed: 3.36.6-1ubuntu0.20.04.2
--------
xrandr program version 1.5.0
Server reports RandR version 1.6
------------
lspci
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Mobile)
(rev 02) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Dell UHD Graphics 630 (Mobile)
Flags: bus master, fast devsel, latency 0, IRQ 176
Memory at eb000000 (64-bit, non-prefetchable) [size=16M]
Memory at 80000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
I found the prime-select toggle and set it to intel... same issue
** Attachment added: "xrandr --verbose #during broken scaling"
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1857383/+attachment/5431932/+files/xrandr.txt
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https://bugs.launchpad.net/bugs/1857383
Title:
Fractional scaling applies to both monitors when you only want it on
one
Status in Mutter:
Invalid
Status in mutter package in Ubuntu:
Triaged
Bug description:
I have installed Ubuntu 20.04 about 2-3 weeks ago (for the single
motive that has fractional scalling) and when activating fractional
scalling worked fine, in the meantime i reinstalled again Ubuntu 20.04
(laptop warranty issue) on same hardware but using the latest Ubuntu
20.04 version and now when i activate fractional scalling it does not
work anymore.
The issue is that it basically zooms both the displays, i can explain
best by attaching the printscreens and a picture with my phone on the
same thing.You will see in the photo taken with the phone how it
actually scales now and how the screenshots are taken...
Let me know what logs/commands etc is needed to pinpoint this which i
think is a regression.
The monitor on which i want to scale is 4k and is connecting through DELL
DA300 adapter through USB-C/Thunderbolt ( i have also tried using Dell Dock
WD19 but same issue).
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
DisplayManager: gdm3
DistroRelease: Ubuntu 20.04
GsettingsChanges: b'org.gnome.mutter' b'experimental-features'
b"['scale-monitor-framebuffer']"
InstallationDate: Installed on 2019-12-18 (18 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20191127)
Package: gnome-shell 3.34.1+git20191024-1ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.3.0-24.26-generic 5.3.10
RelatedPackageVersions: mutter-common 3.34.2-2ubuntu1
Tags: focal
Uname: Linux 5.3.0-24-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
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