Voici le log :
la caméra était branchée er fonctionnait sous VLC je l'ai débranché elle ne fonctionnait plus. J'ai fermé VLC rebranché la caméra je n'avais au choix comme source que /deb/video0 et /deb/video2 à la place de /deb/video0 et /deb/video1
[nikipol@Hofsjokull:~$ tail -f /var/log/syslog
Nov 20 13:25:58 Hofsjokull rtkit-daemon[1150]: Supervising 7 threads of 3 processes of 1 users.
Nov 20 13:26:19 Hofsjokull kernel: [21433.032026] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:26:19 Hofsjokull kernel: [21433.236072] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:26:19 Hofsjokull kernel: [21433.447943] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:25:58 Hofsjokull rtkit-daemon[1150]: Supervising 7 threads of 3 processes of 1 users.
Nov 20 13:27:02 Hofsjokull mate-terminal[22277]: Failed to parse translated string 'Terminal' for key 'title' in schema 'org.mate.terminal.profile': 0:expected value
Nov 20 13:27:02 Hofsjokull mate-terminal[22277]: Using untranslated default instead.
Nov 20 13:27:02 Hofsjokull mate-terminal[22277]: Failed to parse translated string '[UTF-8,current,ISO-8859-15,ISO-8859-1]' for key 'active-encodings' in schema 'org.mate.terminal.global': 1:expected value
Nov 20 13:27:02 Hofsjokull mate-terminal[22277]: Using untranslated default instead.
Nov 20 13:27:03 Hofsjokull systemd[1366]: Started VTE child process 22289 launched by mate-terminal process 22277.
Nov 20 13:27:31 Hofsjokull kernel: [21504.835733] usb 1-1.4: USB disconnect, device number 4
Nov 20 13:27:31 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 26970 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:36 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:36 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:36 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:36 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:36 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:36 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:36 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:40 Hofsjokull kernel: [21514.278863] usb 1-1.4: new full-speed USB device number 8 using ehci-pci
Nov 20 13:27:40 Hofsjokull kernel: [21514.391748] usb 1-1.4: New USB device found, idVendor=046d, idProduct=0890, bcdDevice= 0.90
Nov 20 13:27:40 Hofsjokull kernel: [21514.391751] usb 1-1.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Nov 20 13:27:40 Hofsjokull kernel: [21514.392022] gspca_main: spca500-2.14.0 probing 046d:0890
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 10769 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:40 Hofsjokull mtp-probe: checking bus 1, device 8: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4"
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 59 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:40 Hofsjokull mtp-probe: bus: 1, device: 8 was not an MTP device
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 299 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:40 Hofsjokull mtp-probe: checking bus 1, device 8: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4"
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 239 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:40 Hofsjokull mtp-probe: bus: 1, device: 8 was not an MTP device
Nov 20 13:27:40 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 177154 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:46 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:46 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:46 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:46 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:46 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 29 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:27:46 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:27:46 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device
Nov 20 13:28:13 Hofsjokull kernel: [21546.799163] gspca_spca500: reg write: error -19
Nov 20 13:28:13 Hofsjokull kernel: [21546.799166] gspca_spca500: reg write: error -19
Nov 20 13:28:13 Hofsjokull kernel: [21546.799168] gspca_main: set alt 0 err -22
Nov 20 13:28:13 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: message repeated 1932932 times: [ [00007fdbe8006d50] v4l2 demux error: dequeue error: No such device]
Nov 20 13:28:13 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: [000055c756b991b0] main playlist: end of playlist, exiting
Nov 20 13:28:13 Hofsjokull org.mate.panel.applet.BriskMenuFactory[9348]: QObject::~QObject: Timers cannot be stopped from another thread
Nov 20 13:28:27 Hofsjokull org.mate.panel.applet.BriskMenuFactory[22350]: [000055dc8e95f5b0] main libvlc: Lancement de vlc avec l'interface par défaut. Utiliser « cvlc » pour démarrer VLC sans interface.
Nov 20 13:28:27 Hofsjokull org.mate.panel.applet.BriskMenuFactory[22350]: [000055dc8e9f41b0] main playlist: playlist is empty
Nov 20 13:28:50 Hofsjokull org.mate.panel.applet.BriskMenuFactory[22350]: [00007fd468021e10] main decoder error: buffer deadlock prevented
Nov 20 13:29:42 Hofsjokull kernel: [21635.656011] usb 1-1.4: USB disconnect, device number 8
Nov 20 13:29:46 Hofsjokull kernel: [21640.487550] usb 1-1.4: new full-speed USB device number 9 using ehci-pci
Nov 20 13:29:47 Hofsjokull kernel: [21640.600371] usb 1-1.4: New USB device found, idVendor=046d, idProduct=0890, bcdDevice= 0.90
Nov 20 13:29:47 Hofsjokull kernel: [21640.600373] usb 1-1.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Nov 20 13:29:47 Hofsjokull kernel: [21640.600645] gspca_main: spca500-2.14.0 probing 046d:0890
Nov 20 13:29:47 Hofsjokull mtp-probe: checking bus 1, device 9: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4"
Nov 20 13:29:47 Hofsjokull mtp-probe: bus: 1, device: 9 was not an MTP device
Nov 20 13:29:47 Hofsjokull mtp-probe: checking bus 1, device 9: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4"
Nov 20 13:29:47 Hofsjokull mtp-probe: bus: 1, device: 9 was not an MTP device
Nov 20 13:29:47 Hofsjokull colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Nov 20 13:29:47 Hofsjokull colord-sane: message repeated 5 times: [ io/hpmud/musb.c 2101: Invalid usb_open: Permission denied]
Nov 20 13:30:01 Hofsjokull CRON[22423]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
Nov 20 13:33:50 Hofsjokull systemd[1]: Started Run anacron jobs.
Nov 20 13:33:50 Hofsjokull anacron[22444]: Anacron 2.3 started on 2020-11-20
Nov 20 13:33:50 Hofsjokull anacron[22444]: Normal exit (0 jobs run)
Nov 20 13:33:50 Hofsjokull systemd[1]: anacron.service: Succeeded.
Nov 20 13:34:18 Hofsjokull rtkit-daemon[1150]: Supervising 7 threads of 3 processes of 1 users.
Nov 20 13:34:18 Hofsjokull rtkit-daemon[1150]: message repeated 5 times: [ Supervising 7 threads of 3 processes of 1 users.]
Nov 20 13:34:18 Hofsjokull rtkit-daemon[1150]: Successfully made thread 22511 of process 22224 owned by '1000' RT at priority 10.
Nov 20 13:34:18 Hofsjokull rtkit-daemon[1150]: Supervising 8 threads of 4 processes of 1 users.
J'avais déjà testé deux fois sans succès, hier et ce matin, Jitsi sans succès.
Un message m'indiquait au moment du choix de la caméra que Jitsis ne pouvait y accéder où l'afficher.
Et là, alors que j'essaie au moment où j'écris, ô miracle elle fonctionne !
la suite du log :
ov 20 13:37:05 Hofsjokull dbus-daemon[913]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.312' (uid=1000 pid=22754 comm="mate-screenshot " label="unconfined")
Nov 20 13:37:05 Hofsjokull systemd[1]: Starting Hostname Service...
Nov 20 13:37:05 Hofsjokull dbus-daemon[913]: [system] Successfully activated service 'org.freedesktop.hostname1'
Nov 20 13:37:05 Hofsjokull systemd[1]: Started Hostname Service.
Nov 20 13:37:35 Hofsjokull systemd[1]: systemd-hostnamed.service: Succeeded.
Nov 20 13:37:56 Hofsjokull dbus-daemon[913]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.314' (uid=1000 pid=22827 comm="mate-screenshot " label="unconfined")
Nov 20 13:37:56 Hofsjokull systemd[1]: Starting Hostname Service...
Nov 20 13:37:56 Hofsjokull dbus-daemon[913]: [system] Successfully activated service 'org.freedesktop.hostname1'
Nov 20 13:37:56 Hofsjokull systemd[1]: Started Hostname Service.
Nov 20 13:38:26 Hofsjokull systemd[1]: systemd-hostnamed.service: Succeeded.
Nov 20 13:38:59 Hofsjokull kernel: [22193.208730] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:38:59 Hofsjokull kernel: [22193.416966] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:40:17 Hofsjokull kernel: [22271.500724] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:40:18 Hofsjokull kernel: [22271.711486] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:40:18 Hofsjokull kernel: [22271.923334] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:43:14 Hofsjokull kernel: [22448.216105] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:43:14 Hofsjokull kernel: [22448.424063] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:43:15 Hofsjokull kernel: [22448.648251] usb 2-1.4: reset full-speed USB device number 5 using ehci-pci
Nov 20 13:43:52 Hofsjokull dbus-daemon[913]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.316' (uid=1000 pid=23020 comm="mate-screenshot " label="unconfined")
Nov 20 13:43:52 Hofsjokull systemd[1]: Starting Hostname Service...
Nov 20 13:43:52 Hofsjokull dbus-daemon[913]: [system] Successfully activated service 'org.freedesktop.hostname1'
Nov 20 13:43:52 Hofsjokull systemd[1]: Started Hostname Service.
Nov 20 13:43:53 Hofsjokull dbus-daemon[1395]: [session uid=1000 pid=1395] Activating service name='org.freedesktop.Notifications' requested by ':1.46' (uid=1000 pid=1619 comm="/usr/bin/caja " label="unconfined")
Nov 20 13:43:53 Hofsjokull dbus-daemon[1395]: [session uid=1000 pid=1395] Successfully activated service 'org.freedesktop.Notifications'
Nov 20 13:44:22 Hofsjokull systemd[1]: systemd-hostnamed.service: Succeeded.
Nov 20 13:44:54 Hofsjokull dbus-daemon[913]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.318' (uid=1000 pid=21627 comm="/usr/lib/firefox/firefox " label="unconfined")
Nov 20 13:44:54 Hofsjokull systemd[1]: Starting Hostname Service...
Nov 20 13:44:54 Hofsjokull dbus-daemon[913]: [system] Successfully activated service 'org.freedesktop.hostname1'
Nov 20 13:44:54 Hofsjokull systemd[1]: Started Hostname Service.
Nov 20 13:45:24 Hofsjokull systemd[1]: systemd-hostnamed.service: Succeeded.
Nov 20 13:46:09 Hofsjokull mateweather-app[1641]: Impossible d'obtenir les données METAR : 403 Forbidden.
Nov 20 13:46:09 Hofsjokull mateweather-app[1641]: Source ID 533 was not found when attempting to remove it
Nov 20 13:48:56 Hofsjokull dbus-daemon[913]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.320' (uid=1000 pid=23226 comm="mate-screenshot " label="unconfined")
Nov 20 13:48:56 Hofsjokull systemd[1]: Starting Hostname Service...
Nov 20 13:48:56 Hofsjokull dbus-daemon[913]: [system] Successfully activated service 'org.freedesktop.hostname1'
Nov 20 13:48:56 Hofsjokull systemd[1]: Started Hostname Service.
Nov 20 13:49:26 Hofsjokull systemd[1]: systemd-hostnamed.service: Succeeded.
Nov 20 13:49:26 Hofsjokull dbus-daemon[913]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.322' (uid=1000 pid=21627 comm="/usr/lib/firefox/firefox " label="unconfined")
Nov 20 13:49:27 Hofsjokull systemd[1]: Starting Hostname Service...
Nov 20 13:49:27 Hofsjokull dbus-daemon[913]: [system] Successfully activated service 'org.freedesktop.hostname1'
Nov 20 13:49:27 Hofsjokull systemd[1]: Started Hostname Service.
Nov 20 13:49:57 Hofsjokull systemd[1]: systemd-hostnamed.service: Succeeded.
![Image](https://wtf.roflcopter.fr/pics/D31XqXSQ/WjXRzaxE.png)