Bug#1141827: gnome-snapshot: Segmentation fault on launch when calling Camera:OpenPipeWireRemote

[Matthias Geiger]

Control: tags -1 moreinfo

On Fri, 10 Jul 2026 16:47, Igor Jagec <iam at igorjagec.com> wrote:
>Package: gnome-snapshot
>Version: 50.0-1
>Severity: important
>X-Debbugs-Cc: iam at igorjagec.com
>
>Dear Maintainer,
>
>*** Reporter, please consider answering these questions, where appropriate ***
>
>   * What led up to the situation?
>
>Fresh install of Debian forky on a new ThinkPad P14s Gen 5.
>
>   * What exactly did you do (or not do) that was effective (or
>     ineffective)?
>Started the snapshot app from both GUI and the terminal. Here's the full output below:
>
>igor at prospero:~/Downloads$ GST_DEBUG=2 snapshot
>2026-07-10T14:27:18.273923Z  INFO snapshot::application::imp: Snapshot (org.gnome.Snapshot)
>2026-07-10T14:27:18.273951Z  INFO snapshot::application::imp: Version: 50.0
>2026-07-10T14:27:18.273957Z  INFO snapshot::application::imp: Datadir: /usr/share/snapshot
>2026-07-10T14:27:18.608169Z  INFO ashpd::desktop::request: Creating a org.freedesktop.portal.Request /org/freedesktop/portal/desktop/request/1_143/ashpd_QweWGryT3A
>2026-07-10T14:27:18.610254Z  INFO ashpd::desktop::request: Received signal 'Response' on 'org.freedesktop.portal.Request'
>2026-07-10T14:27:18.610281Z  INFO ashpd::proxy: Calling method org.freedesktop.portal.Camera:OpenPipeWireRemote
>Segmentation fault         GST_DEBUG=2 snapshot
>
>   * What was the outcome of this action?
>
>Immediate Segmentation fault after calling OpenPipeWireRemote.
>
>   * What outcome did you expect instead?
>
>The camera app to open and show the webcam feed.
>
>
Hi Igor,

this does work for me in unstable:

GST_DEBUG=2 snapshot                                                                                                                        
2026-07-10T17:55:29.846541Z  INFO snapshot::application::imp: Snapshot (org.gnome.Snapshot)
2026-07-10T17:55:29.846592Z  INFO snapshot::application::imp: Version: 50.0
2026-07-10T17:55:29.846598Z  INFO snapshot::application::imp: Datadir: /usr/share/snapshot

(snapshot:6018): Adwaita-WARNING **: 19:55:30.157: Using GtkSettings:gtk-application-prefer-dark-theme with libadwaita is unsupported. Please use AdwStyleManager:color-scheme instead.
2026-07-10T17:55:30.675533Z  INFO ashpd::desktop::request: Creating a org.freedesktop.portal.Request /org/freedesktop/portal/desktop/request/1_193/ashpd_bFS7njE8oP
2026-07-10T17:55:30.678471Z  INFO ashpd::desktop::request: Received signal 'Response' on 'org.freedesktop.portal.Request'
2026-07-10T17:55:30.678501Z  INFO ashpd::proxy: Calling method org.freedesktop.portal.Camera:OpenPipeWireRemote
0:00:00.446546644       6018       6018 ERROR          encodebasebin gstencodebasebin.c:979:set_element_properties_from_encoding_profile: Unknown factory: jifmux
0:00:00.478023809       6018       6097 WARN              aggregator gstaggregator.c:2355:gst_aggregator_query_latency_unlocked:<muxer> Latency query failed
0:00:00.632766389       6018       6097 WARN              aggregator gstaggregator.c:2355:gst_aggregator_query_latency_unlocked:<muxer> Latency query failed
2026-07-10T17:55:31.531128Z ERROR snapshot::widgets::gallery_item: Could 
not load gallery item for VID_20260519_150303.mp4: Unknown image format: 
vide
....

Could you please provide a) a full backtrace (see 
https://wiki.debian.org/HowToGetABacktrace)
and b) the output of cam -l (from libcamera-tools)

best,

werdahias