You are not logged in.
Pages: 1
I think that my integrated laptop webcam is being recognized as a keyboard by the kernel. Here is part of journalctl -b:
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) config/udev: Adding input device USB Camera: USB Camera (/dev/input/event17)
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) USB Camera: USB Camera: Applying InputClass "libinput keyboard catchall"
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) USB Camera: USB Camera: Applying InputClass "system-keyboard"
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) Using input driver 'libinput' for 'USB Camera: USB Camera'
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) systemd-logind: got fd for /dev/input/event17 13:81 fd 30 paused 0
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) USB Camera: USB Camera: always reports core events
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) Option "Device" "/dev/input/event17"
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) Option "_source" "server/udev"
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) event17 - (II) USB Camera: USB Camera: (II) is tagged by udev as: Keyboard
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) event17 - (II) USB Camera: USB Camera: (II) device is a keyboard
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) event17 - (II) USB Camera: USB Camera: (II) device removed
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/input/input19/event17"
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) XINPUT: Adding extended input device "USB Camera: USB Camera" (type: KEYBOARD, id 13)
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) Option "xkb_layout" "us"
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (**) Option "xkb_variant" "alt-intl"
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) event17 - (II) USB Camera: USB Camera: (II) is tagged by udev as: Keyboard
nov 07 21:33:29 raizin-blade /usr/lib/gdm/gdm-x-session[803]: (II) event17 - (II) USB Camera: USB Camera: (II) device is a keyboard
My webcam is not working correctly, could this be the cause?
Last edited by ticianolage (2017-11-08 00:54:08)
Offline
See https://bugs.archlinux.org/task/56207 . I have a feeling it is the same root issue, in that libinput doesn't always recognize hardware properly.
Offline
See https://bugs.archlinux.org/task/56207 . I have a feeling it is the same root issue, in that libinput doesn't always recognize hardware properly.
If so, it is not caused by the update. My webcam was recognised as a keyboard with previous versions of libinput, too. (It thinks everything is a keyboard more-or-less.) When I searched, I got the impression this as some kind of Linux quirk - seeing keyboards in everything.
CLI Paste | How To Ask Questions
Arch Linux | x86_64 | GPT | EFI boot | refind | stub loader | systemd | LVM2 on LUKS
Lenovo x270 | Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz | Intel Wireless 8265/8275 | US keyboard w/ Euro | 512G NVMe INTEL SSDPEKKF512G7L
Offline
It is certainly possible. I have never run into this bug myself, so it may have been around for a long time.
Offline
circleface wrote:See https://bugs.archlinux.org/task/56207 . I have a feeling it is the same root issue, in that libinput doesn't always recognize hardware properly.
If so, it is not caused by the update. My webcam was recognised as a keyboard with previous versions of libinput, too. (It thinks everything is a keyboard more-or-less.) When I searched, I got the impression this as some kind of Linux quirk - seeing keyboards in everything.
So is there anyway to force linux to configure it properly as a webcam?
Offline
My webcam is not working correctly, could this be the cause?
is not an error description but literally mentioned in the forum stickies on how to ask *not*
It's rather "normal" for webcams to provide a keyboard interface (though I've never checked what they do with it ;-)
So start with the problem and elaborate on *how* your "webcam is not working correctly" ...
Offline
My webcam is not working correctly, could this be the cause?
is not an error description but literally mentioned in the forum stickies on how to ask *not*
It's rather "normal" for webcams to provide a keyboard interface (though I've never checked what they do with it ;-)So start with the problem and elaborate on *how* your "webcam is not working correctly" ...
Ok, Sorry for the lack of information.
My notebook is a 2016 Razer Blade, and as stated at the wiki page the webcam will connect for a few seconds and then show an error if I'm using cheese. With guvcview I'm able to run the webcam with very low resolution (640x480). Other programs can't use the camera either (OBS studio, Hangouts, etc). The wiki says that I could try setting quirks to 512, which I did to no avail.
Offline
Did you reboot after adding/editing this file? (Or at least reload the module)
Let's see what kind of camera this is: "lsusb"
Do you have a /dev/video0 device? Can you play it with eg. "mpv /dev/video0"?
Offline
Did you reboot after adding/editing this file? (Or at least reload the module)
Yes. It's still with quirks=512
Let's see what kind of camera this is: "lsusb"
$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 1532:020f Razer USA, Ltd
Bus 001 Device 004: ID 0bda:579f Realtek Semiconductor Corp.
Bus 001 Device 003: ID 05ac:033d Apple, Inc.
Bus 001 Device 002: ID 0cf3:e300 Qualcomm Atheros Communications
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Not helping very much... but after running "lsusb -v", I've found this for 001:004
$ sudo lsusb -s 001:004 -v
Bus 001 Device 004: ID 0bda:579f Realtek Semiconductor Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.01
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x0bda Realtek Semiconductor Corp.
idProduct 0x579f
bcdDevice 0.02
iManufacturer 3 11121119-000J74219
iProduct 1 USB Camera
iSerial 2 200901010001
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 785
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 4 USB Camera
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5 USB Camera
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5 USB Camera
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 78
dwClockFrequency 15.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x00000004
Auto-Exposure Priority
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 0
bControlSize 2
bmControls 0x0000177f
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
White Balance Temperature
Backlight Compensation
Gain
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x 9
None
SECAM - 625/50
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {8ca72912-b447-9440-b0ce-db07386fb938}
bNumControl 2
bNrPins 1
baSourceID( 0) 2
bControlSize 2
bmControls( 0) 0x00
bmControls( 1) 0x06
iExtension 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 6
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
INTERFACE CLASS: 0f 24 01 02 8d 02 81 00 03 02 01 00 01 00 00
INTERFACE CLASS: 1b 24 04 01 08 59 55 59 32 00 00 10 00 80 00 00 aa 00 38 9b 71 10 01 00 00 00 00
INTERFACE CLASS: 22 24 05 01 00 80 02 e0 01 00 00 65 04 00 00 ca 08 00 60 09 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 05 02 00 a0 00 78 00 00 50 46 00 00 a0 8c 00 00 96 00 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 05 03 00 b0 00 90 00 00 d0 5c 00 00 a0 b9 00 00 c6 00 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 05 04 00 40 01 f0 00 00 40 19 01 00 80 32 02 00 58 02 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 05 05 00 00 05 d0 02 00 00 65 04 00 00 ca 08 00 20 1c 00 40 42 0f 00 02 40 42 0f 00 80 84 1e 00
INTERFACE CLASS: 22 24 05 06 00 00 05 20 03 00 00 e2 04 00 00 c4 09 00 40 1f 00 40 42 0f 00 02 40 42 0f 00 80 84 1e 00
INTERFACE CLASS: 1e 24 05 07 00 00 05 00 04 00 00 40 06 00 00 40 06 00 00 28 00 80 84 1e 00 01 80 84 1e 00
INTERFACE CLASS: 1e 24 05 08 00 80 07 38 04 00 40 e3 09 00 40 e3 09 00 48 3f 00 80 84 1e 00 01 80 84 1e 00
INTERFACE CLASS: 1a 24 03 00 05 80 02 e0 01 00 05 d0 02 00 05 20 03 00 04 00 03 80 07 38 04 00
INTERFACE CLASS: 06 24 0d 01 01 04
INTERFACE CLASS: 0b 24 06 02 08 01 01 00 00 00 00
INTERFACE CLASS: 22 24 07 01 00 80 02 e0 01 00 00 65 04 00 00 ca 08 00 60 09 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 07 02 00 a0 00 78 00 00 50 46 00 00 a0 8c 00 00 96 00 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 07 03 00 b0 00 90 00 00 d0 5c 00 00 a0 b9 00 00 c6 00 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 07 04 00 40 01 f0 00 00 40 19 01 00 80 32 02 00 58 02 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 07 05 00 00 05 d0 02 00 00 2f 0d 00 00 5e 1a 00 20 1c 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 07 06 00 00 05 20 03 00 00 a6 0e 00 00 4c 1d 00 40 1f 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 07 07 00 00 05 00 04 00 00 c0 12 00 00 80 25 00 00 28 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 22 24 07 08 00 80 07 38 04 00 c0 a9 1d 00 80 53 3b 00 48 3f 00 15 16 05 00 02 15 16 05 00 2a 2c 0a 00
INTERFACE CLASS: 1a 24 03 00 05 80 02 e0 01 00 05 d0 02 00 05 20 03 00 04 00 03 80 07 38 04 00
INTERFACE CLASS: 06 24 0d 01 01 04
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 12
bNumDeviceCaps 1
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000006
BESL Link Power Management (LPM) Supported
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0000
(Bus Powered)
I do have the /dev/video0 file, however I can't play it with mpv:
$ mpv /dev/video0
Playing: /dev/video0
[ffmpeg/demuxer] video4linux2,v4l2: Dequeued v4l2 buffer contains 261900 bytes, but 614400 were expected. Flags: 0x00012001.
(+) Video --vid=1 (rawvideo 640x480 30.000fps)
[ffmpeg/demuxer] video4linux2,v4l2: Dequeued v4l2 buffer contains 131060 bytes, but 614400 were expected. Flags: 0x00012001.
[lavf] error reading packet.
[ffmpeg/demuxer] video4linux2,v4l2: Dequeued v4l2 buffer contains 261845 bytes, but 614400 were expected. Flags: 0x00012001.
[lavf] error reading packet.
Exiting... (Errors when loading file)
Offline
Despite the quirk, the video still seems promoted as 640x480 -
"quirks=512" seems to work best for one use
doesn't sound very convincing.
Please try 720p first, ie. "quirks=128"
Offline
Despite the quirk, the video still seems promoted as 640x480 -
"quirks=512" seems to work best for one use
doesn't sound very convincing.
Please try 720p first, ie. "quirks=128"
No luck
$ mpv /dev/video0
Playing: /dev/video0
[ffmpeg/demuxer] video4linux2,v4l2: Dequeued v4l2 buffer contains 114648 bytes, but 1843200 were expected. Flags: 0x00012001.
(+) Video --vid=1 (rawvideo 1280x720 10.000fps)
[ffmpeg/demuxer] video4linux2,v4l2: Dequeued v4l2 buffer contains 114651 bytes, but 1843200 were expected. Flags: 0x00012001.
[lavf] error reading packet.
Offline
Pages: 1