Баг 60885, пункт 2: снимок в момент неисправности (камера недоступна в OpenToonz)
Стенд: kworkstation-11-4-x86-64-legacy-ext4-20261013, пользователь test
Собрано скриптом из 7 команд (lsusb, ls -l, v4l2-ctl, fuser, udevadm)

=== время: 2026-10-16 15:11:50
=== lsusb
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd QEMU Tablet
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 0408:546d Quanta Computer, Inc. HP FHD Camera
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
=== ls -l /dev/video* /dev/media*
crw-rw----+ 1 root video 243, 0 окт 16 13:52 /dev/media0
crw-rw----+ 1 root video  81, 0 окт 16 13:52 /dev/video0
crw-rw----+ 1 root video  81, 1 окт 16 13:52 /dev/video1
=== v4l2-ctl --list-devices
HP FHD Camera: HP FHD Camera (usb-0000:00:1a.0-4):
        /dev/video0
        /dev/video1
        /dev/media0
=== fuser -v /dev/video*
Не удалось выполнить функцию stat для файла /proc/32081/fd/0: Отказано в доступе
Не удалось выполнить функцию stat для файла /proc/32081/fd/1: Отказано в доступе
(
P.S.
здесь опущены 128 строк «Не удалось выполнить функцию stat ... Отказано в доступе» для процессов 32081 и 32327.
Доп проверка:
[root@kworkstation-11-4-x86-64-legacy-ext4-20261013 ~]# pgrep -ai opentoonz
33828 /usr/bin/../bin/OpenToonz
[root@kworkstation-11-4-x86-64-legacy-ext4-20261013 ~]# ls -l /proc/33828/fd | grep -E 'video|media'
[root@kworkstation-11-4-x86-64-legacy-ext4-20261013 ~]# fuser -v /dev/video0 /dev/video1 /dev/media0
echo "exit=$?"
exit=1 )

                     ПОЛЬЗ-ЛЬ    PID ДОСТУП КОМАНДА
/dev/video0:         test      33828 F.... OpenToonz
=== v4l2-ctl -d /dev/video0 --all
Driver Info:
        Driver name      : uvcvideo
        Card type        : HP FHD Camera: HP FHD Camera
        Bus info         : usb-0000:00:1a.0-4
        Driver version   : 6.12.112
        Capabilities     : 0x84a00001
                Video Capture
                Metadata Capture
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x04200001
                Video Capture
                Streaming
                Extended Pix Format
Media Driver Info:
        Driver name      : uvcvideo
        Model            : HP FHD Camera: HP FHD Camera
        Serial           : [убран]
        Bus info         : usb-0000:00:1a.0-4
        Media version    : 6.12.112
        Hardware revision: 0x00000006 (6)
        Driver version   : 6.12.112
Interface Info:
        ID               : 0x03000002
        Type             : V4L Video
Entity Info:
        ID               : 0x00000001 (1)
        Name             : HP FHD Camera: HP FHD Camera
        Function         : V4L2 I/O
        Flags            : default
        Pad 0x01000007   : 0: Sink
          Link 0x02000016: from remote pad 0x100000a of entity 'Extension 8' (Video Pixel Formatter): Data, Enabled, Immutable
Priority: 2
Video input : 0 (Camera 1: ok)
Format Video Capture:
        Width/Height      : 640/480
        Pixel Format      : 'YUYV' (YUYV 4:2:2)
        Field             : None
        Bytes per Line    : 1280
        Size Image        : 614400
        Colorspace        : sRGB
        Transfer Function : Rec. 709
        YCbCr/HSV Encoding: ITU-R 601
        Quantization      : Default (maps to Limited Range)
        Flags             : 
Crop Capability Video Capture:
        Bounds      : Left 0, Top 0, Width 640, Height 480
        Default     : Left 0, Top 0, Width 640, Height 480
        Pixel Aspect: 1/1
Selection Video Capture: crop_default, Left 0, Top 0, Width 640, Height 480, Flags: 
Selection Video Capture: crop_bounds, Left 0, Top 0, Width 640, Height 480, Flags: 
Streaming Parameters Video Capture:
        Capabilities     : timeperframe
        Frames per second: 30.000 (30/1)
        Read buffers     : 0

User Controls

                     brightness 0x00980900 (int)    : min=-64 max=64 step=1 default=0 value=0
                       contrast 0x00980901 (int)    : min=0 max=64 step=1 default=32 value=32
                     saturation 0x00980902 (int)    : min=0 max=128 step=1 default=64 value=64
                            hue 0x00980903 (int)    : min=-40 max=40 step=1 default=0 value=0
        white_balance_automatic 0x0098090c (bool)   : default=1 value=1
                          gamma 0x00980910 (int)    : min=72 max=500 step=1 default=100 value=100
                           gain 0x00980913 (int)    : min=0 max=4 step=1 default=0 value=0
           power_line_frequency 0x00980918 (menu)   : min=0 max=2 default=2 value=1 (50 Hz)
                                0: Disabled
                                1: 50 Hz
                                2: 60 Hz
      white_balance_temperature 0x0098091a (int)    : min=2800 max=6500 step=1 default=4000 value=4000 flags=inactive
                      sharpness 0x0098091b (int)    : min=0 max=5 step=1 default=0 value=0
         backlight_compensation 0x0098091c (int)    : min=0 max=1 step=1 default=0 value=0

Camera Controls

                  auto_exposure 0x009a0901 (menu)   : min=0 max=3 default=3 value=3 (Aperture Priority Mode)
                                1: Manual Mode
                                3: Aperture Priority Mode
         exposure_time_absolute 0x009a0902 (int)    : min=40 max=10000 step=1 default=312 value=312 flags=inactive
     exposure_dynamic_framerate 0x009a0903 (bool)   : default=0 value=1
                        privacy 0x009a0910 (bool)   : default=0 value=0 flags=read-only
=== v4l2-ctl -d /dev/video0 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture

        [0]: 'MJPG' (Motion-JPEG, compressed)
                Size: Discrete 640x480
                        Interval: Discrete 0.033s (30.000 fps)
                        Interval: Discrete 0.067s (15.000 fps)
                Size: Discrete 640x360
                        Interval: Discrete 0.033s (30.000 fps)
                        Interval: Discrete 0.067s (15.000 fps)
                Size: Discrete 1280x720
                        Interval: Discrete 0.033s (30.000 fps)
                        Interval: Discrete 0.067s (15.000 fps)
                Size: Discrete 1920x1080
                        Interval: Discrete 0.033s (30.000 fps)
                        Interval: Discrete 0.067s (15.000 fps)
        [1]: 'YUYV' (YUYV 4:2:2)
                Size: Discrete 640x480
                        Interval: Discrete 0.033s (30.000 fps)
                        Interval: Discrete 0.067s (15.000 fps)
                Size: Discrete 640x360
                        Interval: Discrete 0.033s (30.000 fps)
                        Interval: Discrete 0.067s (15.000 fps)
=== udevadm info --query=property --name=/dev/video0
DEVPATH=/devices/pci0000:00/0000:00:1a.0/usb2/2-4/2-4:1.0/video4linux/video0
DEVNAME=/dev/video0
MAJOR=81
MINOR=0
SUBSYSTEM=video4linux
USEC_INITIALIZED=271319951799
ID_V4L_VERSION=2
ID_V4L_PRODUCT=HP FHD Camera: HP FHD Camera
ID_V4L_CAPABILITIES=:capture:
ID_BUS=usb
ID_MODEL=HP_FHD_Camera
ID_MODEL_ENC=HP\x20FHD\x20Camera
ID_MODEL_ID=546d
ID_VENDOR=Quanta
ID_VENDOR_ENC=Quanta
ID_VENDOR_ID=0408
ID_REVISION=0006
ID_TYPE=video
ID_USB_MODEL=HP_FHD_Camera
ID_USB_MODEL_ENC=HP\x20FHD\x20Camera
ID_USB_MODEL_ID=546d
ID_USB_VENDOR=Quanta
ID_USB_VENDOR_ENC=Quanta
ID_USB_VENDOR_ID=0408
ID_USB_REVISION=0006
ID_USB_TYPE=video
ID_USB_INTERFACES=:0e0101:0e0201:fe0101:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=uvcvideo
ID_PATH_WITH_USB_REVISION=pci-0000:00:1a.0-usbv2-0:4:1.0
ID_PATH=pci-0000:00:1a.0-usb-0:4:1.0
ID_PATH_TAG=pci-0000_00_1a_0-usb-0_4_1_0
ID_INTEGRATION=external
ID_FOR_SEAT=video4linux-pci-0000_00_1a_0-usb-0_4_1_0
COLORD_DEVICE=1
COLORD_KIND=camera
DEVLINKS=/dev/v4l/by-path/pci-0000:00:1a.0-usb-0:4:1.0-video-index0 /dev/v4l/by-path/pci-0000:00:1a.0-usbv2-0:4:1.0-video-index0 /dev/v4l/by-id/usb-Quanta_HP_FHD_Camera_[убран]-video-index0
TAGS=:seat:uaccess:
CURRENT_TAGS=:seat:uaccess:
=== v4l2-ctl -d /dev/video1 --all
Driver Info:
        Driver name      : uvcvideo
        Card type        : HP FHD Camera: HP FHD Camera
        Bus info         : usb-0000:00:1a.0-4
        Driver version   : 6.12.112
        Capabilities     : 0x84a00001
                Video Capture
                Metadata Capture
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x04a00000
                Metadata Capture
                Streaming
                Extended Pix Format
Media Driver Info:
        Driver name      : uvcvideo
        Model            : HP FHD Camera: HP FHD Camera
        Serial           : [убран]
        Bus info         : usb-0000:00:1a.0-4
        Media version    : 6.12.112
        Hardware revision: 0x00000006 (6)
        Driver version   : 6.12.112
Interface Info:
        ID               : 0x03000005
        Type             : V4L Video
Entity Info:
        ID               : 0x00000004 (4)
        Name             : HP FHD Camera: HP FHD Camera
        Function         : V4L2 I/O
Priority: 2
Format Metadata Capture:
        Sample Format   : 'UVCH' (UVC Payload Header Metadata)
        Buffer Size     : 10240
=== v4l2-ctl -d /dev/video1 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
        Type: Video Capture

=== udevadm info --query=property --name=/dev/video1
DEVPATH=/devices/pci0000:00/0000:00:1a.0/usb2/2-4/2-4:1.0/video4linux/video1
DEVNAME=/dev/video1
MAJOR=81
MINOR=1
SUBSYSTEM=video4linux
USEC_INITIALIZED=271319951937
ID_V4L_VERSION=2
ID_V4L_PRODUCT=HP FHD Camera: HP FHD Camera
ID_V4L_CAPABILITIES=:
ID_BUS=usb
ID_MODEL=HP_FHD_Camera
ID_MODEL_ENC=HP\x20FHD\x20Camera
ID_MODEL_ID=546d
ID_VENDOR=Quanta
ID_VENDOR_ENC=Quanta
ID_VENDOR_ID=0408
ID_REVISION=0006
ID_TYPE=video
ID_USB_MODEL=HP_FHD_Camera
ID_USB_MODEL_ENC=HP\x20FHD\x20Camera
ID_USB_MODEL_ID=546d
ID_USB_VENDOR=Quanta
ID_USB_VENDOR_ENC=Quanta
ID_USB_VENDOR_ID=0408
ID_USB_REVISION=0006
ID_USB_TYPE=video
ID_USB_INTERFACES=:0e0101:0e0201:fe0101:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=uvcvideo
ID_PATH_WITH_USB_REVISION=pci-0000:00:1a.0-usbv2-0:4:1.0
ID_PATH=pci-0000:00:1a.0-usb-0:4:1.0
ID_PATH_TAG=pci-0000_00_1a_0-usb-0_4_1_0
ID_INTEGRATION=external
ID_FOR_SEAT=video4linux-pci-0000_00_1a_0-usb-0_4_1_0
COLORD_DEVICE=1
COLORD_KIND=camera
DEVLINKS=/dev/v4l/by-id/usb-Quanta_HP_FHD_Camera_[убран]-video-index1 /dev/v4l/by-path/pci-0000:00:1a.0-usb-0:4:1.0-video-index1 /dev/v4l/by-path/pci-0000:00:1a.0-usbv2-0:4:1.0-video-index1
TAGS=:uaccess:seat:
CURRENT_TAGS=:uaccess:seat:
