incorrect BGR subpixel rendering on all Gnome Panel text

Bug #1670910 reported by Paul
16
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Mutter
Fix Released
Medium
mutter (Ubuntu)
Fix Released
High
Unassigned

Bug Description

All text in the Gnome toolbar, Panel, workspace switcher, etc. has subpixel rendering applied as appropriate for a BGR screen, even though my monitor has subpixels in the far more common RGB order. This results in white-on-black text having distracting red fringing on the left and blue on the right. No apps are affected (including the Settings dialog).

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: gnome-shell 3.23.90-0ubuntu3
ProcVersionSignature: Ubuntu 4.10.0-9.11-generic 4.10.0
Uname: Linux 4.10.0-9-generic x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
Date: Wed Mar 8 12:30:33 2017
DisplayManager: gdm3
InstallationDate: Installed on 2016-12-02 (95 days ago)
InstallationMedia: Ubuntu-GNOME 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
ProcEnviron:
 LANGUAGE=en_AU:en
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Paul (i41bktob-launchpad-net) wrote :
Revision history for this message
Jeremy Bícha (jbicha) wrote :

Thank you for taking the time to report this bug and help make Ubuntu better.

Hopefully, this bug will be fixed in mutter 3.23.92 expected by the end of next week.

affects: gnome-shell (Ubuntu) → mutter (Ubuntu)
Changed in mutter (Ubuntu):
importance: Undecided → High
status: New → Triaged
Changed in mutter:
importance: Unknown → Medium
status: Unknown → Fix Released
Revision history for this message
Paul (i41bktob-launchpad-net) wrote :

"BGRA buffers being copied as-is into an RGBA texture for fonts." That would do it. Interesting cause of BGR subpixel symptoms.

Thanks for the speedy response everyone, and your good work on the project.

Jeremy Bícha (jbicha)
tags: added: block-proposed
Changed in mutter (Ubuntu):
status: Triaged → Fix Committed
Jeremy Bícha (jbicha)
tags: removed: block-proposed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package mutter - 3.23.92-0ubuntu1

---------------
mutter (3.23.92-0ubuntu1) zesty; urgency=medium

  * New upstream release (LP: #1670910)

 -- Jeremy Bicha <email address hidden> Mon, 13 Mar 2017 22:25:03 -0400

Changed in mutter (Ubuntu):
status: Fix Committed → Fix Released
Changed in mutter:
status: Fix Released → Confirmed
Changed in mutter:
status: Confirmed → Fix Released
Changed in mutter:
status: Fix Released → Confirmed
Changed in mutter:
status: Confirmed → Fix Released
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