The upgrade of the glycin packages to 2.2.1+ds-1 always makes
viking hang on startup. This is a major regression.

In a strace output, I can see

151847 00:11:54 (+     0.000287) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80659, tv_nsec=881834125}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:54 (+     0.500649) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80660, tv_nsec=382410768}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:55 (+     0.500440) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80660, tv_nsec=882825665}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:55 (+     0.500688) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80661, tv_nsec=383470261}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:56 (+     0.500539) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80661, tv_nsec=884106115}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:56 (+     0.500612) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80662, tv_nsec=384631909}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:57 (+     0.500495) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80662, tv_nsec=885167417}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:57 (+     0.500620) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80663, tv_nsec=385768879}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:58 (+     0.500363) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80663, tv_nsec=886256775}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
151847 00:11:58 (+     0.500546) futex(0x7fd93969e018, FUTEX_WAIT_BITSET_PRIVATE, 16, {tv_sec=80664, tv_nsec=386709411}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connection timed out)
[...]

where the pid 151847 is one of the viking threads. But this issue
was introduced by the upgrade of the glycin packages:

viking depends on these packages via the libgdk-pixbuf-2.0-0
package.

Currently in unstable, libgdk-pixbuf-2.0-0 is at version
2.44.8+dfsg-1, which depends on libglycin-2-0 (>= 2.2~beta.1).

Downgrading libgdk-pixbuf-2.0-0 (and the other packages of the
same source) to 2.44.7+dfsg-1 does not solve the problem. Also
downgrading the packages of glycin source to 2.1.5+ds-2 makes
the problem disappear.

Note that due to the above dependency, I could not downgrade
the packages of glycin source without libgdk-pixbuf-2.0-0.

Thank you for reporting this bug to the glycin developers. The glycin
developers are basically saying that viking will need to change its
code. Could you report this issue to the viking developers and the
Debian maintainers of viking?

https://gitlab.gnome.org/GNOME/glycin/-/work_items/330

Thank you,
Jeremy Bícha

Control: clone -1 -2
Control: reassign -2 viking 1.11+git20260816.2a242096-1
Control: retitle -2 viking: glycin 2.2.1 makes viking hang on startup
Control: affects -2 - src:viking
Control: forwarded -2 https://github.com/viking-gps/viking/issues/398

OK, I'm cloning this bug, with the URL of my upstream bug report
for viking: https://github.com/viking-gps/viking/issues/398

Thank you. I apologize for the inconvenience, but I intend to lower
the severity of https://bugs.debian.org/1148472 in a few days to let
gtk4 4.24 migrate since gtk4 is now stuck waiting for the updated
gdk-pixbuf and glycin to migrate to Testing. gtk4 4.24 is a mini
transition and I've been waiting for it to migrate for a few weeks
already.

Jeremy Bícha

This would be a problem for the current users of viking, as the bug
would then be unnoticed with apt-listbugs. I'm wondering whether
adding a Breaks or Conflicts against the current version of viking
(1.11+git20260816.2a242096-1) would be a solution, given that
viking is completely unusable (the hang occurs even before its
main window appears).

This bug is preventing glycin & friends from migrating to Testing.
More specifically, the Breaks I added to glycin means that
installability in Testing would regress if glycin were allowed to
migrate.

Thank you,
Jeremy Bícha

Rob Norris fixed the bug with

https://github.com/viking-gps/viking/commit/e3b3814f1be2bfc5d1f3d0c1cb2f0fac63770eab

(I haven't tested.)

We believe that the bug you reported is fixed in the latest version of
viking, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1148676@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Paul Gevers <elbrus@debian.org> (supplier of updated viking package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sun, 04 Oct 2026 08:22:16 +0200
Source: viking
Architecture: source
Version: 1.11+git20261003.e3b3814f-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Commons <viking@packages.debian.org>
Changed-By: Paul Gevers <elbrus@debian.org>
Closes: 1136740 1148676
Changes:
 viking (1.11+git20261003.e3b3814f-1) unstable; urgency=medium
 .
   * New upstream version 1.11+git20261003.e3b3814f (Closes: #1148676,
     #1136740)
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