gnome-terminal constantly logs "Unable to load blank_cursor from the cursor theme" under gnome/wayland

[Jamie Strandboge]

Impact
======
The systemd journal gets full of useless messages about "Unable to load blank_cursor from the cursor theme" when using GNOME Terminal in Wayland on Ubuntu 17.10. Ubuntu 17.10 uses Wayland by default when the hardware supports it.

Test Case
=========
1.Install the gtk3 updates to Ubuntu 17.10.
2. Log out then log into "Ubuntu" or "GNOME" on a computer that supports Wayland.
3. Open the default terminal app.
4. Verify that you are running Wayland by running this command. If there is output, you are running Wayland.

 env | grep -i wayland

5. Run this command to check for the useless messages from gnome-terminal:

journalctl -f

Regression Potential
===================
This fix is part of the gtk3 3.22.25 update (LP: #1728421) and seems unlikely to cause problems.

https://git.gnome.org/browse/gtk+/commit/?h=gtk-3-22&id=fc741adbb

Original Bug Report
===================
Under GNOME/Wayland, regardless of cursor theme (I'm using 'DMZ-White', but confirmed with 'Adwaita'), whenever the terminal obtains focus and the user starts entering input, gnome-terminal will generate two log entries:

Apr 11 13:39:22 localhost gnome-terminal-[28979]: Unable to load blank_cursor from the cursor theme
Apr 11 13:39:22 localhost gnome-terminal-[28979]: Unable to load blank_cursor from the cursor theme

This seems to be:
https://bugzilla.redhat.com/show_bug.cgi?id=1417490

and related to:
https://bugzilla.gnome.org/show_bug.cgi?id=775217

(though in Ubuntu 17.04 the log doesn't contain 'gdkcursor-wayland.c:170' like in the gnome bug.

[Jamie Strandboge (jdstrand)]

This bug is *super* annoying. Here is a workaround to make rsyslog discard this messages:

Create /etc/rsyslog.d/49-lp1681910.conf with:
# workaround LP: #1681910
:msg,contains,"Unable to load blank_cursor from the cursor theme" ~
& stop

Restart rsyslog: sudo service rsyslog restart

[Will Cooke (willcooke)]

Added to Trello: https://trello.com/c/MxxwgJTo/192-bug1681910-gnome-terminal-constantly-logs-unable-to-load-blankcursor-from-the-cursor-theme-under-gnome-wayland

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jamie Strandboge (jdstrand)]

https://git.gnome.org/browse/gtk%2B/commit/?id=db49d12 has the fix for this.

[Jamie Strandboge (jdstrand)]

Here is the upstream patch as a debdiff that I compiled locally. Preliminary testing shows that it fixes the gnome-terminal issue. I won't be chasing this all the way through the SRU process, but hope that you consider it in a future 17.10 SRU.

[Jeremy Bícha (jbicha)]

fixed for Ubuntu 18.04 LTS with gtk+ 3.22.25. I'm proposing updating Ubuntu 17.10 to gtk+ 3.22.25 in LP: #1728421

[Brian Murray (brian-murray)]

Hello Jamie, or anyone else affected,

Accepted gtk+3.0 into artful-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gtk+3.0/3.22.25-0ubuntu0.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-artful to verification-done-artful. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-artful. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Jeremy Bícha (jbicha)]

I can no longer duplicate this bug with 3.22.25-0ubuntu0.1 on Ubuntu 17.10.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gtk+3.0 - 3.22.25-0ubuntu0.1

---------------
gtk+3.0 (3.22.25-0ubuntu0.1) artful; urgency=medium

  [ Simon McVittie ]
  * New upstream release (LP: #1728421)
    - Fix tiling behaviour with Mutter/Shell 3.26 (Closes: #879566)
    - Fix crash when adding Google online account (LP: #1720400)
    - Fixes log spam about cursor when running gnome-terminal on Wayland
      (LP: #1681910)
    - Update symbols file
    - d/p/0001-Adwaita-Fix-typo-.backgrounf-.background.patch,
      d/p/0002-theme-Fix-Adwaita-headerbars.patch,
      d/p/0003-display-x11-Unset-tiled-state-if-_GTK_EDGE_CONSTRAIN.patch:
      Drop patches, applied upstream
    - d/p/gdk-wayland-protocol-server-decoration.patch:
      Add server-decoration.xml from upstream git. It is missing from the
      tarball release.

  [ Jeremy Bicha ]
  * Drop 0004_fix-gtkentry-wayland-regression.path:
    Because this caused a totem regression, we're fixing the
    bug in mutter instead.
  * Drop some unapplied patches from the package source

 -- Jeremy Bicha <email address hidden> Mon, 30 Oct 2017 16:07:23 -0400

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for gtk+3.0 has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.