You are not logged in.
Recently I purchased a USB video adapter (fully UVC/UVA compatible) so I could pipe an HDMI signal from a camcorder into my computer as a webcam. I plugged everything and it is not seen by Cheese (GNOME camera app), OBS, or VLC. I have confirmed this is not a device issue by testing it with my Ubuntu based laptop and it loads just fine and can be used in any application. I am running the latest build of Arch with kernel 5.7.11. When I run the
dmesg | tailcommand after plugging it in I get the following output:
[ 961.763622] usb 1-2: new high-speed USB device number 5 using xhci_hcd
[ 962.193173] usb 1-2: unable to read config index 0 descriptor/all
[ 962.193176] usb 1-2: can't read configurations, error -71
[ 965.306955] usb 1-2: new high-speed USB device number 7 using xhci_hcd
[ 965.549541] usb 1-2: New USB device found, idVendor=534d, idProduct=2109, bcdDevice=21.00
[ 965.549544] usb 1-2: New USB device strings: Mfr=1, Product=0, SerialNumber=0
[ 965.549546] usb 1-2: Manufacturer: MACROSILICONI have confirmed that the UVC/UAC modules are compiled with `modprobe`
Any help would be appreciated.
Offline
I was actually just recently having the same problem. I have two of those cheap USB capture adapter and another slighly more expensive USB video adapter (Aliexpress Specials). The more expensive (different chip card) worked fine, but the cheap USB Video Adapters (Macrosilicon) never were detected. I tried linux-lts as I thought it was a recent kernel update or something, but the same issues were happening.
I tested a different device and found the cheap USB Video Adapters worked as expected, but my main desktop was having issues. This person was also having issues and found it was due to a Sound Capture Device. https://bugs.archlinux.org/task/67460 . I just added a USB Roland Quad-Capture UA-22 to the mix recently and probably haven't used those cards recently.
If I unplugged all the capture cards and the Roland Quad-Capture, rebooted, then plugged them back in with the USB Video adapters first. I found they were detected properly and worked as expected.
I haven't diagnosed this any further to the root cause. Do you have any USB Audio devices?
Offline
I have a Scarlet 2i2 which I use for all of my audio I/O. I can try rebooting without it plugged in but with the capture card in and see if this works.
Offline
I have tried disconnecting all of my USB devices and rebooting. It shows up in GNOME as an audio input, but as it stands I cannot find the video listed under any application, nor is there a /dev entry for any video device. It seems that there might be an issue with udev not handling it right?
Last edited by narg2800 (2020-08-03 21:12:20)
Offline
I just bought this device and was hit with this issue.
usb 3-1: new high-speed USB device number 10 using xhci_hcd
usb 3-1: New USB device found, idVendor=534d, idProduct=2109, bcdDevice=21.00
usb 3-1: New USB device strings: Mfr=1, Product=0, SerialNumber=0
usb 3-1: Manufacturer: MACROSILICONIt looks like a bug in snd-usb-audio, it binds to the first 4 interfaces of the device, despite the fact that only numbers 2 and 3 are of audio class:
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 10 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=534d ProdID=2109 Rev=21.00
S: Manufacturer=MACROSILICON
C: #Ifs= 5 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#=0x0 Alt= 0 #EPs= 0 Cls=0e(video) Sub=01 Prot=00 Driver=snd-usb-audio
I: If#=0x1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=snd-usb-audio
I: If#=0x2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio
I: If#=0x3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
I: If#=0x4 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid
$ ls -l /sys/bus/usb/drivers/snd-usb-audio/ | grep 3-1
lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.0 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.0
lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.1 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.1
lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.2 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.2
lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.3 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.3Knowing this, the workaround is simple, just unbind the interfaces from the driver:
echo "3-1:1.0" > /sys/bus/usb/drivers/snd-usb-audio/unbind
echo "3-1:1.1" > /sys/bus/usb/drivers/snd-usb-audio/unbind
echo "3-1:1.2" > /sys/bus/usb/drivers/snd-usb-audio/unbind
echo "3-1:1.3" > /sys/bus/usb/drivers/snd-usb-audio/unbindand bind them again to uvcvideo and snd-usb-audio, respectively:
echo -n "3-1:1.0" > /sys/bus/usb/drivers/uvcvideo/bind
echo -n "3-1:1.2" > /sys/bus/usb/drivers/snd-usb-audio/bindAnd, voilà, it works:
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 10 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=534d ProdID=2109 Rev=21.00
S: Manufacturer=MACROSILICON
C: #Ifs= 5 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#=0x0 Alt= 0 #EPs= 0 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
I: If#=0x1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
I: If#=0x2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio
I: If#=0x3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
I: If#=0x4 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhiduvcvideo: Found UVC 1.00 device <unnamed> (534d:2109)
uvcvideo 3-1:1.0: Entity type for entity Processing 2 was not initialized!
uvcvideo 3-1:1.0: Entity type for entity Camera 1 was not initialized!$ v4l2-ctl --list-devices
UVC Camera (534d:2109): USB Vid (usb-0000:0f:00.3-1):
/dev/video0
/dev/video1
$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: MS2109 [MS2109], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0Offline
Coming from Debian bullseye, I just bought the device (534d:2109) and am having this issue.
Offline
The workaround works for me. Thanks!
I just bought this device and was hit with this issue.
usb 3-1: new high-speed USB device number 10 using xhci_hcd usb 3-1: New USB device found, idVendor=534d, idProduct=2109, bcdDevice=21.00 usb 3-1: New USB device strings: Mfr=1, Product=0, SerialNumber=0 usb 3-1: Manufacturer: MACROSILICONIt looks like a bug in snd-usb-audio, it binds to the first 4 interfaces of the device, despite the fact that only numbers 2 and 3 are of audio class:
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 10 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=534d ProdID=2109 Rev=21.00 S: Manufacturer=MACROSILICON C: #Ifs= 5 Cfg#= 1 Atr=80 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 0 Cls=0e(video) Sub=01 Prot=00 Driver=snd-usb-audio I: If#=0x1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=snd-usb-audio I: If#=0x2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio I: If#=0x3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio I: If#=0x4 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid $ ls -l /sys/bus/usb/drivers/snd-usb-audio/ | grep 3-1 lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.0 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.0 lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.1 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.1 lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.2 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.2 lrwxrwxrwx 1 root root 0 8. srp 19.08 3-1:1.3 -> ../../../../devices/pci0000:00/0000:00:07.1/0000:0f:00.3/usb3/3-1/3-1:1.3Knowing this, the workaround is simple, just unbind the interfaces from the driver:
echo "3-1:1.0" > /sys/bus/usb/drivers/snd-usb-audio/unbind echo "3-1:1.1" > /sys/bus/usb/drivers/snd-usb-audio/unbind echo "3-1:1.2" > /sys/bus/usb/drivers/snd-usb-audio/unbind echo "3-1:1.3" > /sys/bus/usb/drivers/snd-usb-audio/unbindand bind them again to uvcvideo and snd-usb-audio, respectively:
echo -n "3-1:1.0" > /sys/bus/usb/drivers/uvcvideo/bind echo -n "3-1:1.2" > /sys/bus/usb/drivers/snd-usb-audio/bindAnd, voilà, it works:
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 10 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=534d ProdID=2109 Rev=21.00 S: Manufacturer=MACROSILICON C: #Ifs= 5 Cfg#= 1 Atr=80 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 0 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo I: If#=0x1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo I: If#=0x2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio I: If#=0x3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio I: If#=0x4 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhiduvcvideo: Found UVC 1.00 device <unnamed> (534d:2109) uvcvideo 3-1:1.0: Entity type for entity Processing 2 was not initialized! uvcvideo 3-1:1.0: Entity type for entity Camera 1 was not initialized!$ v4l2-ctl --list-devices UVC Camera (534d:2109): USB Vid (usb-0000:0f:00.3-1): /dev/video0 /dev/video1 $ arecord -l **** List of CAPTURE Hardware Devices **** card 1: MS2109 [MS2109], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0
Offline
UPDATE: I have diagnosed and fixed the issue.
The issue was that due to a bug the UVCVideo module wasnt loading. The fix was to force the module to be loaded.
This was acheived in the following way:
sudo echo "uvcvideo" | sudo tee /etc/modules-load.d/uvc.conf I have to give credit to reddit user u/steev182 for providing the fix which has worked for me.
Offline