Snapshot No Camera Found

[corrado venturini]

Starting snapshot i see a black window with message "No Camera Found"

Mar 17 09:35:02 corrado-n4-nn-0310 org.gnome.Snapshot.desktop[4179]: 2024-03-17T08:35:02.968754Z INFO snapshot::application::imp: Snapshot (org.gnome.Snapshot)
Mar 17 09:35:02 corrado-n4-nn-0310 org.gnome.Snapshot.desktop[4179]: 2024-03-17T08:35:02.968767Z INFO snapshot::application::imp: Version: 45.2
Mar 17 09:35:02 corrado-n4-nn-0310 org.gnome.Snapshot.desktop[4179]: 2024-03-17T08:35:02.968769Z INFO snapshot::application::imp: Datadir: /usr/share/snapshot
Mar 17 09:35:02 corrado-n4-nn-0310 systemd[2063]: Started app-gnome-org.gnome.Snapshot-4179.scope - Application launched by gnome-shell.
Mar 17 09:35:20 corrado-n4-nn-0310 ubuntu-report[2089]: level=error msg="data were not delivered successfully to metrics server, retrying in 120s"
Mar 17 09:35:21 corrado-n4-nn-0310 systemd[2063]: Started app-gnome-org.gnome.DejaDup.Monitor-4217.scope - Application launched by gnome-session-binary.
Mar 17 09:35:22 corrado-n4-nn-0310 dbus-daemon[2115]: [session uid=1000 pid=2115] Failed to activate service 'org.freedesktop.Tracker3.Miner.Extract': timed out (service_start_timeout=120000ms)
Mar 17 09:35:30 corrado-n4-nn-0310 org.gnome.Snapshot.desktop[4179]: 2024-03-17T08:35:30.752824Z ERROR snapshot::widgets::window::imp: Could not take picture: The viewfinder is not in the READY state
Mar 17 09:35:54 corrado-n4-nn-0310 systemd[1]: Started anacron.service - Run anacron jobs.
Mar 17 09:35:54 corrado-n4-nn-0310 anacron[4229]: Anacron 2.3 started on 2024-03-17
Mar 17 09:35:54 corrado-n4-nn-0310 anacron[4229]: Normal exit (0 jobs run)
Mar 17 09:35:54 corrado-n4-nn-0310 systemd[1]: anacron.service: Deactivated successfully.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gnome-snapshot 45.2+vendored-0ubuntu1
ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4
Uname: Linux 6.8.0-11-generic x86_64
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Mar 17 09:41:38 2024
ExecutablePath: /usr/bin/snapshot
InstallationDate: Installed on 2024-03-10 (7 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240310)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
SourcePackage: gnome-snapshot
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for your bug report.

Could you install the libcamera-tools package and see if the qcam utility provided there lists your camera?

Also please share the output of
$ cam -l

[corrado venturini (corradoventu)]

corrado@corrado-n9-nn-0316:~$ cam -l
[0:12:08.444939208] [6659] WARN IPAManager ipa_manager.cpp:154 No IPA found in '/usr/lib/x86_64-linux-gnu/libcamera'
[0:12:08.444968062] [6659] INFO Camera camera_manager.cpp:284 libcamera v0.2.0
Available cameras:
1: 'HD Webcam C615' (\_SB_.PC00.XHCI.RHUB.HS05-5:1.2-046d:082c)
corrado@corrado-n9-nn-0316:~$

corrado@corrado-n9-nn-0316:~$ qcam
QSocketNotifier: Can only be used with threads started with QThread
[0:14:09.434956679] [6880] WARN IPAManager ipa_manager.cpp:154 No IPA found in '/usr/lib/x86_64-linux-gnu/libcamera'
[0:14:09.434997569] [6880] INFO Camera camera_manager.cpp:284 libcamera v0.2.0
[0:14:24.178462387] [6880] INFO Camera camera.cpp:1183 configuring streams: (0) 1920x1080-MJPEG
Using software format conversion from MJPEG
corrado@corrado-n9-nn-0316:~$ snapshot

qcam recognizes the webcam and shows an image

Note: both cheese and guvcview are working fine

[corrado venturini (corradoventu)]

Still same problem with new version from proposed

corrado@corrado-n7-nn-0306:~$ apt policy gnome-snapshot
gnome-snapshot:
  Installed: 46.0-1ubuntu1
  Candidate: 46.0-1ubuntu1
  Version table:
 *** 46.0-1ubuntu1 100
        100 http://archive.ubuntu.com/ubuntu noble-proposed/universe amd64 Packages

should I open a new bug?

[corrado venturini (corradoventu)]

Same with gnome-snapshot: Installed: 46.0-1ubuntu2
with a different webcam Realtek Integrated_Webcam_HD

[corrado venturini (corradoventu)]

I have 2 webcams, if I connect both guvcview allows me to choose which one to use, camera chooses without asking.
Also cheese allows choose between different cameras.

If I connect my second camera the messages change:
corrado@corrado-n7-nn-0408:~$ snapshot
2024-04-09T12:21:10.548208Z INFO snapshot::application::imp: Snapshot (org.gnome.Snapshot)
2024-04-09T12:21:10.548228Z INFO snapshot::application::imp: Version: 46.0
2024-04-09T12:21:10.548231Z INFO snapshot::application::imp: Datadir: /usr/share/snapshot
2024-04-09T12:21:10.922843Z ERROR aperture::viewfinder: Could not start camerabin: Element failed to change its state
2024-04-09T12:21:10.924966Z ERROR aperture::viewfinder: Could not start camerabin: Element failed to change its state
2024-04-09T12:21:10.925607Z ERROR aperture::viewfinder: Bus Error from Some("/GstCameraBin:camerabin0/GstWrapperCameraBinSrc:camerasrc/GstAutoVideoSrc:camerasrc-real-src/GstPipeWireSrc:camerasrc-real-src-actual-src-pipewir")
stream error: error output enum formats: Invalid argument
Some("../src/gst/gstpipewiresrc.c(689): on_state_changed (): /GstCameraBin:camerabin0/GstWrapperCameraBinSrc:camerasrc/GstAutoVideoSrc:camerasrc-real-src/GstPipeWireSrc:camerasrc-real-src-actual-src-pipewir")
2024-04-09T12:21:10.925628Z ERROR aperture::viewfinder: Bus Error from Some("/GstCameraBin:camerabin0/GstWrapperCameraBinSrc:camerasrc/GstAutoVideoSrc:camerasrc-real-src/GstPipeWireSrc:camerasrc-real-src-actual-src-pipewir")
Internal data stream error.
Some("../libs/gst/base/gstbasesrc.c(3175): gst_base_src_loop (): /GstCameraBin:camerabin0/GstWrapperCameraBinSrc:camerasrc/GstAutoVideoSrc:camerasrc-real-src/GstPipeWireSrc:camerasrc-real-src-actual-src-pipewir:\nstreaming stopped, reason not-negotiated (-4)")

[Sebastien Bacher (seb128)]

Following the upstream debug info, could you get the output of

$ pw-dump | grep default.video.source

and

$ gst-device-monitor-1.0 Video/Source

?

[corrado venturini (corradoventu)]

continuation in Bug 2060390 with gnome-snapshot new version

[Lainer Donet (lainerdonet87)]

If you encounter the "No Camera Found" issue while using GNOME Snapshot, here's how you can address it:
- Close the App: First, close the GNOME Snapshot app if it's open.
- Restart Pipewire: Open a terminal by pressing Ctrl+Alt+T. Then, restart Pipewire by running the following command:

systemctl --user restart pipewire

- Launch GNOME Snapshot: After restarting Pipewire, run the following command to start the camera app from the command line:

snapshot