** Package changed: gnome-session (Ubuntu) => gnome-shell (Ubuntu)
** Changed in: gnome-shell (Ubuntu)
Assignee: (unassigned) => Jeremy Bicha (jbicha)
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https://bugs.launchpad.net/bugs/1713323
Title:
HiDPI support partially broken after upgrade
Status in gnome-shell package in Ubuntu:
Confirmed
Bug description:
After an upgrade this morning that took in the new version of this
package, and a suite of gnome-session/gnome-settings packages, which
may also be implicated, support for scaling on HiDPI screens seems to
have partially failed. Partially.
BTW I invoked the bug reporter with "ubuntu-bug ubuntu-session" but
when I got to the launchpad page it had pre-filled "gnome-session".
One presumes there's a reason for that so I've left it, especially as
this does affect "GNOME" as well as "Ubuntu" sessions. But I do note a
settings migrations utility in ubuntu-session which I wonder if it
might be implicated. (TBH looking at it it's not obvious why, though
it does reset scaling - that's not the problem, the problem is that it
can't be set back to a combination that works.)
Reminder all the stuff I'm reporting below as being wrongly-scaled was
scaled correctly before the update that just took place. Enpass got a
little help from having some QT env variables set, but that's it.
Logging in under session "Ubuntu" (Wayland - on a different machine as
this one being nvidia doesn't support it) or session "Ubuntu on Xorg"
- also affects GNOME sessions:
* The fonts in the top bar, and the menus and indicators accessible
from there, are unscaled. The indicator icons *are* scaled correctly.
* The fonts in the applications view are unscaled, but the icons and
layout *are* scaled correctly.
* Menu titlebar *text* is unscaled. close/minimize/maximize widgets
*are* scaled correctly, as is the titlebar's size itself.
* The mouse pointer is unscaled.
* Non-Gnome apps, either QT or GTK (examples: enpass, nextcloud-
client, hexchat, sublime text 3) are unscaled, or in some cases are a
bit confused, with some elements correctly scaled, but again fonts are
not.
* Also on a personal note, Java 9 JavaFX apps are no longer scaled.
(In Java 8 it was already broken; I was targeting Java 9 with my
development partly *because* its HiDPI support was working in Linux.)
FYI Java 9 JavaFX uses GTK3, Java 8 uses GTK2.
## What is working:
* Gnome apps (eg: Terminal, Transmission, Settings, Tweaks, Nautilus,
Gedit etc. etc.) are all fine. Although note those that use a "normal"
titlebar (eg: Terminal) rather than an integrated one (eg: Nautilus)
show small titlebar text as mentioned above
* Google Chrome, Thunderbird, Firefox are fine (although the latter
two aren't being updated for Artful yet, just sayin' ;-)
## What happens if I try to fix it:
gsettings org.gnome.desktop.interface scaling-factor appears to no
longer be operational. Changing its value from 0 (default), 1 and 2
appears to have no effect on anything any more. It used to be setting
it to 2 fixed the few things that weren't right by having it set to
0... Correction, that *does* fix it for Java 9 JavaFX, it must be
reading that setting directly. But nothing else reported as broken
above is affected by changing this setting. Nor in fact does setting
it to 1 cause gnome apps to be unscaled.
gsettings org.gnome.desktop.interface cursor-size is working. I can
set it to 48, double its normal size, to get back normal-sized cursors
when the pointer is over newly-launched applications. But that's
obviously a workaround.
gsettings org.gnome.desktop.interface text-scaling-factor set to 2.0,
also exposed in Gnome Tweaks, unsurprisingly makes text twice as
large. That "fixes" it for the applications that are reported as being
unscaled above, but it also doubles the size of text in gnome apps as
well, so those are now far too large for the windows they're in.
Google Chrome is unaffected by this, as is Java 9 JavaFX, but
Thunderbird *is* affected.
I noticed a new gsetting: com.ubuntu.user-interface scale-factor, but
it seems to have a nonsense-value "@a{si} {}". I have no idea if this
is anything in use or if it was an intended Unity 8 thing. I didn't
try anything with it.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: ubuntu-session 3.25.90-0ubuntu2
ProcVersionSignature: Ubuntu 4.12.0-11.12-generic 4.12.5
Uname: Linux 4.12.0-11-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.6-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Aug 27 13:03:53 2017
InstallationDate: Installed on 2017-07-30 (27 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: gnome-session
UpgradeStatus: Upgraded to artful on 2017-08-22 (5 days ago)
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