[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Kristijan Žic ]

I encounter probably the same bug in 18.04 and in 18.10.

I've opened a separate bug report because it might not be the exact issue:
https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1818382

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: gstreamer
   Status: Confirmed => Expired

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Sergei]

After gnome-twitch flatpak update (and some other "core" flatpak packages 
update) now I have same lags in gnome-twitch. 
The bug comes from gnome. Just like most of bugs in Ubuntu and other distros.

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Launchpad Bug Tracker]

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

** Changed in: clutter-1.0 (Ubuntu)
   Status: New => Confirmed

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: clutter-1.0 (Ubuntu)
   Status: Won't Fix => New

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: totem-pl-parser
   Status: Confirmed => Expired

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: clutter-gst-3.0 (Ubuntu)
   Status: In Progress => Incomplete

** Changed in: gstreamer-vaapi (Ubuntu)
   Status: In Progress => Incomplete

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: gstreamer-vaapi (Ubuntu)
   Status: Confirmed => In Progress

** Also affects: clutter-gst-3.0 (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: clutter-gst-3.0 (Ubuntu)
   Status: New => In Progress

** Changed in: clutter-gst-3.0 (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: gstreamer-vaapi (Ubuntu)
   Status: In Progress => Confirmed

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: gstreamer
   Status: Unknown => Confirmed

** Changed in: gstreamer
   Importance: Unknown => Medium

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Maybe this is a better upstream bug:
https://bugzilla.gnome.org/show_bug.cgi?id=795325

** Bug watch added: GNOME Bug Tracker #795325
   https://bugzilla.gnome.org/show_bug.cgi?id=795325

** Changed in: gstreamer
   Importance: Medium => Unknown

** Changed in: gstreamer
   Status: Confirmed => Unknown

** Changed in: gstreamer
 Remote watch: GNOME Bug Tracker #795195 => GNOME Bug Tracker #795325

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: gstreamer-vaapi (Ubuntu)
   Status: New => In Progress

** Changed in: gstreamer-vaapi (Ubuntu)
   Importance: Undecided => Medium

** Changed in: gstreamer-vaapi (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

** No longer affects: totem (Ubuntu)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: gstreamer
   Status: Unknown => Confirmed

** Changed in: gstreamer
   Importance: Unknown => Medium

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Progress! I think...
https://bugzilla.gnome.org/show_bug.cgi?id=795195

** Also affects: gstreamer-vaapi (Ubuntu)
   Importance: Undecided
   Status: New

** Bug watch added: GNOME Bug Tracker #795195
   https://bugzilla.gnome.org/show_bug.cgi?id=795195

** Also affects: gstreamer via
   https://bugzilla.gnome.org/show_bug.cgi?id=795195
   Importance: Unknown
   Status: Unknown

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Amr Ibrahim]

I am also having stutter videos in Totem in Bionic. I am using old
hardware from 2011. I am ready to give more debugging info when needed.

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

I'm really not sure what changed to make 4K video so stuttery now in
totem. The CPU is fairly low and goes through the roof only if I
uninstall VAAPI. So VAAPI is working, and it works smoothly in mpv too.

Since I could last play 4K smoothly in totem there has been:
  * A mesa update 17.2 -> 18.0
  * A Xorg update 1.19.5 -> 1.19.6
  * Kernel updates
  * Hardware changes (I changed from a Haswell to Kaby Lake desktop)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Also affects: totem (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: totem (Ubuntu)
   Status: New => Confirmed

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

This issue is still not fixed for Xorg. Not sure what package to target
though...

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Launchpad Bug Tracker]

This bug was fixed in the package gtk+3.0 - 3.22.28-1ubuntu1

---
gtk+3.0 (3.22.28-1ubuntu1) bionic; urgency=medium

  * Merge with Debian. Remaining changes:
+ Install a settings.ini file to set our themes
+ Enable Mir backend
+ Update debian/libgtk-3-0.symbols
+ debian/control.in:
  - Build-depend on adwaita-icon-theme-full for icon name check test
+ debian/rules: Mark additional known test failures:
  - box-shadow-changes-modify-clip.ui
  - label-text-shadow-changes-modify-clip.ui
+ Ubuntu-specific patches:
  - 073_treeview_almost_fixed.patch
  - bzg_gtkcellrenderer_grabbing_modifier.patch
  - ubuntu_gtk_custom_menu_items.patch
  - print-dialog-show-options-of-remote-dnssd-printers.patch
  - uimanager-guard-against-nested-node-updates.patch
  - x-canonical-accel.patch
  - message-dialog-restore-traditional-look-on-unity.patch
  - 0001-gtk-reftest-Force-icon-theme-to-Adwaita.patch
  - restore_filechooser_typeaheadfind.patch
  - 0001-calendar-always-emit-day-selected-once.patch
  - 0001-gtkwindow-set-transparent-background-color.patch
  - ubuntu_fileselector_behaviour.patch
  - unity-border-radius.patch
  - unity-headerbar-maximized-mode.patch
  - gtksocket-unscale-before-sending-configurenotify.patch
  - no_content_hub.patch

gtk+3.0 (3.22.28-1) unstable; urgency=medium

  * New upstream release (LP: #1698270) (LP: #1714518)
  * Update Vcs fields for conversion to git
  * Add debian/gbp.conf
  * Bump Standards-Version to 4.1.3
  * Update Vcs fields for migration to https://salsa.debian.org/
  * Drop git_text-view-support-emoji-chooser.patch: Applied in new release

 -- Jeremy Bicha   Thu, 15 Feb 2018 10:15:34 -0500

** Changed in: gtk+3.0 (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

I suspect there's another issue specific to Xorg that's causing stutter
there, and not yet resolved. Although you won't see it till bug 1747744
is fixed :)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: gtk
   Status: Confirmed => Fix Released

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Launchpad Bug Tracker]

This bug was fixed in the package totem-pl-parser - 3.26.0-1ubuntu2

---
totem-pl-parser (3.26.0-1ubuntu2) bionic; urgency=medium

  * totem-pl-parser-xspf.c: Avoid large stutters in video playback due to
heavy (and unnecessary) disk syncing (LP: #1698270)

 -- Daniel van Vugt   Tue, 31 Oct 2017
17:07:46 +0800

** Changed in: totem-pl-parser (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Ubuntu Foundations Team Bug Bot]

The attachment "totem-pl-parser_3.26.0-1ubuntu2.debdiff" seems to be a
debdiff.  The ubuntu-sponsors team has been subscribed to the bug report
so that they can review and hopefully sponsor the debdiff.  If the
attachment isn't a patch, please remove the "patch" flag from the
attachment, remove the "patch" tag, and if you are member of the
~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issue please contact him.]

** Tags added: patch

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

A fix for bionic.

** Patch added: "totem-pl-parser_3.26.0-1ubuntu2.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/totem/+bug/1698270/+attachment/5001059/+files/totem-pl-parser_3.26.0-1ubuntu2.debdiff

** Also affects: totem-pl-parser (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: totem-pl-parser (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

** Changed in: totem-pl-parser (Ubuntu)
   Importance: Undecided => High

** Changed in: totem-pl-parser (Ubuntu)
   Status: New => In Progress

** Project changed: totem => totem-pl-parser

** No longer affects: totem (Ubuntu)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: totem
   Status: Unknown => Confirmed

** Changed in: totem
   Importance: Unknown => Medium

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** No longer affects: totem

** Bug watch added: GNOME Bug Tracker #733780
   https://bugzilla.gnome.org/show_bug.cgi?id=733780

** Also affects: totem via
   https://bugzilla.gnome.org/show_bug.cgi?id=733780
   Importance: Unknown
   Status: Unknown

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: totem
   Status: Confirmed => Invalid

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: totem
   Status: Unknown => Confirmed

** Changed in: totem
   Importance: Unknown => Medium

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Here tis: https://bugzilla.gnome.org/show_bug.cgi?id=788926

** Bug watch added: GNOME Bug Tracker #788926
   https://bugzilla.gnome.org/show_bug.cgi?id=788926

** Changed in: totem
   Importance: High => Unknown

** Changed in: totem
   Status: Incomplete => Unknown

** Changed in: totem
 Remote watch: GNOME Bug Tracker #778766 => GNOME Bug Tracker #788926

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Some simple system monitoring:
  cat /proc/`pidof totem`/io
reveals totem's biggest skip coincides with a disk _write_ of some sort.

That should be easy to track down but I'm just about out of time this
week.

** Changed in: totem (Ubuntu)
   Status: Confirmed => In Progress

** Changed in: totem (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: clutter-1.0 (Ubuntu)
   Status: In Progress => Won't Fix

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: clutter-1.0 (Ubuntu)
   Status: Won't Fix => In Progress

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: totem (Ubuntu)
   Status: In Progress => New

** Changed in: totem (Ubuntu)
 Assignee: Daniel van Vugt (vanvugt) => (unassigned)

** Changed in: totem (Ubuntu)
   Status: New => Confirmed

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** No longer affects: gstreamer (Ubuntu)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

The part relevant to clutter-gtk is now released with bug 1698282.
Although that doesn't contribute much to the visible stuttering for me,
it could in theory for some systems.

** Changed in: clutter-gtk (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Now looking into issue 3 from comment #11 again.

Every time the big stutter occurs it coincides with my PC's harddisk
LED. Also, the same place in the video seems to be the first time the
stream bitrate peaks over 10Mbps. So there seems to be some kind of
cause and effect at this particularly detailed part of the video.

The stutter only occurs in totem though. No other gstreamer tool seems
to exhibit the problem when playing the same video. Even using "gst-
launch-1.0 playbin uri=file:///" seems to not have the  problem. So
all evidence at the moment is suggesting the biggest stutter is somehow
specific to the totem binary, and not gstreamer in general.

I've also just noticed a 5th source of stuttering; that is using
clutterautovideosink in an X11 session. Will ignore that problem for
now...


** Changed in: totem (Ubuntu)
   Status: Fix Released => In Progress

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: gstreamer (Ubuntu)
   Status: New => In Progress

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: gstreamer (Ubuntu)
   Status: In Progress => New

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: gstreamer (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

** Changed in: gstreamer (Ubuntu)
   Status: Triaged => In Progress

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Branch linked: lp:~vanvugt/gtk/fix-1698270

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: gtk
   Status: Unknown => Confirmed

** Changed in: gtk
   Importance: Unknown => Medium

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: clutter-gtk (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

** Changed in: clutter-gtk (Ubuntu)
   Importance: Undecided => Medium

** Changed in: clutter-gtk (Ubuntu)
   Status: New => In Progress

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Bug watch added: GNOME Bug Tracker #787665
   https://bugzilla.gnome.org/show_bug.cgi?id=787665

** Also affects: gtk via
   https://bugzilla.gnome.org/show_bug.cgi?id=787665
   Importance: Unknown
   Status: Unknown

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Sorry, in comment #12 I mean "clutter" (in its gdk subdir), not
"clutter-gtk".

** Changed in: clutter-1.0 (Ubuntu)
   Status: New => Won't Fix

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Smoothness issue 4 above I have tracked down to this clutter-gtk code:

-
static void
clutter_master_clock_gdk_update (GdkFrameClock *frame_clock,
 ClutterMasterClockGdk *master_clock)
{
  GList *stages, *l;

  _clutter_threads_acquire_lock ();

  /* Get the time to use for this frame */
  master_clock->cur_tick = gdk_frame_clock_get_frame_time (frame_clock);
-

The problem is not in clutter-gtk though. It's a general lack of
precision in the GdkFrameClock logic. Despite my monitor running at
around 60Hz, the GDK frame_time interval is erratic and mostly varies
between 17 and 18 milliseconds. So the root cause is just poor timing
logic in GDK.

I have an experimental fix already for gdk so probably don't need to
propose changes to clutter-gtk any more.

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Also affects: gtk+3.0 (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: gtk+3.0 (Ubuntu)
   Status: New => In Progress

** Changed in: gtk+3.0 (Ubuntu)
   Importance: Undecided => Medium

** Changed in: gtk+3.0 (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

OK, I have now encountered a few reasons for totem stuttering...

1. Excessive/faulty tags parsing (only seen in Big Buck Bunny videos?). 
Upstream has fixed the root cause:
  https://bugzilla.gnome.org/show_bug.cgi?id=786561
but we have also patched totem itself in Ubuntu to avoid the issue:
  https://launchpad.net/ubuntu/+source/totem/3.25.90.1-0ubuntu2

2. Excessive CPU usage of clutter-gtk particularly under Wayland -> bug
1698282

3. Insufficient buffering/parallelism in GStreamer. BBB tends to have a
big stutter when the video bitrate spikes over 11Mbps. I'm not aware of
any other reports of the problem though.

4. My experimental fixes for the high CPU usage of clutter-gtk in bug
1698282 reintroduces an old smoothness problem that only occurs under
the default setting of CLUTTER_BACKEND=gdk (but not with
CLUTTER_BACKEND=wayland or x11). I'll try to fix that somewhere between
bug 1698282 and this one.

** Bug watch added: GNOME Bug Tracker #786561
   https://bugzilla.gnome.org/show_bug.cgi?id=786561

** Also affects: gstreamer (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: gstreamer (Ubuntu)
   Status: New => Triaged

** Changed in: gstreamer (Ubuntu)
   Importance: Undecided => Medium

** Also affects: clutter-gtk (Ubuntu)
   Importance: Undecided
   Status: New

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

I don't see why not. Let's just wait until upstream has accepted the fix
and I'll be more confident about applying the same to xenial.

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Amr Ibrahim]

Does the fix apply in Xenial?

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Launchpad Bug Tracker]

This bug was fixed in the package totem - 3.25.90.1-0ubuntu2

---
totem (3.25.90.1-0ubuntu2) artful; urgency=medium

  * debian/patches/fix-bvw_update_tags-performance.patch:
- bacon-video-widget.c: Reduce CPU usage and visible stuttering
  (LP: #1698282 and LP: #1698270).

 -- Daniel van Vugt   Mon, 21 Aug 2017
16:10:19 +0800

** Changed in: totem (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Changed in: totem (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

** Changed in: totem (Ubuntu)
   Status: Confirmed => In Progress

** Changed in: clutter-1.0 (Ubuntu)
 Assignee: (unassigned) => Daniel van Vugt (vanvugt)

** Changed in: totem (Ubuntu)
   Importance: Undecided => High

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Also affects: clutter-1.0 (Ubuntu)
   Importance: Undecided
   Status: New

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

First experimental fix:
https://git.launchpad.net/~vanvugt/ubuntu/+source/totem/commit/?id=02076c41f892e214d946457f944c6da3011307f1

Although I suspect we are linked to the wrong upstream bug so I won't
mention it there.

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Amr Ibrahim]

I have this bug also in 3.18.1-1ubuntu4 in Xenial.

** Tags added: xenial

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

** Description changed:

  Totem pauses and stutters during video playback even when CPU usage is
  low.
  
  After figuring out how to play videos with full hardware accelerated
  decoding (e.g. <= 10% CPU), I was surprised to find Totem still pauses
- and stutters during playback. Other apps like Mplayer never have this
- problem.
+ and stutters during playback. Other apps like Mplayer, VLC and even gst-
+ play-1.0 never have this problem.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: totem 3.24.0-0ubuntu1
  ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15
  Uname: Linux 4.10.0-22-generic x86_64
  ApportVersion: 2.20.5-0ubuntu4
  Architecture: amd64
  Date: Fri Jun 16 12:03:18 2017
  InstallationDate: Installed on 2017-05-03 (44 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170502)
  SourcePackage: totem
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Saurav Sengupta]

This happens in full-screen mode for a window with client-side
decorations using OpenGL. Another workaround is to use GNOME MPV without
CSD or without OpenGL:
https://bugzilla.gnome.org/show_bug.cgi?id=778766#c2

Re comment #2: With GNOME MPV, it doesn't happen on KDE Plasma for me
even if both CSD and OpenGL are enabled.

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Launchpad Bug Tracker]

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

** Changed in: totem (Ubuntu)
   Status: New => Confirmed

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Bug Watch Updater]

** Changed in: totem
   Status: Unknown => Incomplete

** Changed in: totem
   Importance: Unknown => High

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

Workaround: Use 'gst-play-1.0' instead of 'totem'. It avoids the
rendering glitches and has much lower CPU usage.

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[Bug 1698270] Re: Totem pauses and stutters during video playback even when CPU usage is low

[Daniel van Vugt]

The issue seems to persist regardless of which shell / desktop
environment I use.

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