[SOLVED] I can use only audio or only video with my webcam, but not simultaneously

m4dj0e · 04-27-2021, 03:51 PM

I have a quite old Logitech QuickCam Communicate STX Webcam with my Linux Mint (linux54) and I need to use the older version of V4L in order to make nowadays application to work with it. Therefore for Zoom, Chromium and other applications I use special scripts in the following format:

Code:

#!/bin/bash
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so /usr/bin/APP_NAME

However, when I try Cheese, I could take any photo normally, but as soon as I press record for recording a video, the application freezes instantly.

Another weird situation is when I try to use Zoom, I see the app's settings indicate all functions of my camera normally: the microphone works out of box, the camera works fine as well, but only in Settings! As soon as I start any meeting, only one works at the same time: Audio OR Video.

When I see my camera working, the other party can't hear my voice regardless of the Audio settings or toggling state of my microphone. Same goes in the opposite direction: when I close zoom and start an Audio meeting, I can't enable my video and the video toggle button is always set to ON, but it doesn't emit any video data to the other party.

How could I debug this issue and what particular data should I provide here?

Emerson · 04-27-2021, 04:58 PM

Generally, with any hardware related support request it pays off to provide as much information about it as possible, lsusb output is minimum, like this:

Code:

Bus 001 Device 002: ID 046d:0826 Logitech, Inc. HD Webcam C525

There is the ID 046d:0826, by this ID kernel loads the driver and by this ID we can search for correct driver.

m4dj0e · 04-27-2021, 06:16 PM

Code:

$ lsusb
Bus 002 Device 003: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 046d:08f5 Logitech, Inc. QuickCam Messenger Communicate
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

$ ls /dev/video*
/dev/video0

$ sudo cat /sys/kernel/debug/usb/devices | grep -E "^([TSPD]:.*|)$"
T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480  MxCh= 2
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev= 5.04
S:  Manufacturer=Linux 5.4.0-72-generic ehci_hcd
S:  Product=EHCI Host Controller
S:  SerialNumber=0000:00:1a.0

T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=480  MxCh= 4
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=8087 ProdID=0024 Rev= 0.00

T:  Bus=01 Lev=02 Prnt=02 Port=02 Cnt=01 Dev#=  3 Spd=12   MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS= 8 #Cfgs=  1
P:  Vendor=046d ProdID=08f5 Rev= 1.00
S:  Product=Camera

T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480  MxCh= 2
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev= 5.04
S:  Manufacturer=Linux 5.4.0-72-generic ehci_hcd
S:  Product=EHCI Host Controller
S:  SerialNumber=0000:00:1d.0

T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=480  MxCh= 6
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=8087 ProdID=0024 Rev= 0.00

T:  Bus=02 Lev=02 Prnt=02 Port=02 Cnt=01 Dev#=  3 Spd=480  MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=058f ProdID=6362 Rev= 1.29
S:  Manufacturer=Generic
S:  Product=Mass Storage Device
S:  SerialNumber=058F312D81B

$ lsusb -v | grep -E '\<(Bus|iProduct|bDeviceClass|bDeviceProtocol)' 2>/dev/null
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Bus 002 Device 003: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer
  bDeviceClass            0 
  bDeviceProtocol         0 
  iProduct                2 
      (Bus Powered)
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
  bDeviceClass            9 Hub
  bDeviceProtocol         1 Single TT
  iProduct                0 
Couldn't open device, some information will be missing
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  bDeviceClass            9 Hub
  bDeviceProtocol         0 Full speed (or root) hub
  iProduct                2 
Bus 001 Device 003: ID 046d:08f5 Logitech, Inc. QuickCam Messenger Communicate
  bDeviceClass          255 Vendor Specific Class
  bDeviceProtocol       255 Vendor Specific Protocol
  iProduct                1 
      (Bus Powered)
Couldn't open device, some information will be missing
Couldn't open device, some information will be missing
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
  bDeviceClass            9 Hub
  bDeviceProtocol         1 Single TT
  iProduct                0 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  bDeviceClass            9 Hub
  bDeviceProtocol         0 Full speed (or root) hub
  iProduct                2

$ hwinfo --usb
01: SCSI 400.3: 10600 Disk                                      
  [Created at block.256]
  Unique ID: JPTW.U_Jt4BKDVLA
  SysFS ID: /class/block/sdf
  SysFS BusID: 4:0:0:3
  SysFS Device Link: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/host4/target4:0:0/4:0:0:3
  Hardware Class: disk
  Model: "Generic USB MS Reader"
  Vendor: usb 0x058f "Generic"
  Device: usb 0x6362 "USB MS Reader"
  Revision: "1.03"
  Serial ID: "058F312D81B"
  Driver: "usb-storage", "sd"
  Driver Modules: "usb_storage"
  Device File: /dev/sdf (/dev/sg6)
  Device Files: /dev/sdf, /dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.3:1.0-scsi-0:0:0:3, /dev/disk/by-id/usb-Generic_USB_MS_Reader_058F312D81B-0:3
  Device Number: block 8:80-8:95 (char 21:6)
  Speed: 480 Mbps
  Module Alias: "usb:v058Fp6362d0129dc00dsc00dp00ic08isc06ip50in00"
  Driver Info #0:
    Driver Status: uas is active
    Driver Activation Cmd: "modprobe uas"
  Driver Info #1:
    Driver Status: usb_storage is active
    Driver Activation Cmd: "modprobe usb_storage"
  Drive status: no medium
  Config Status: cfg=new, avail=yes, need=no, active=unknown

02: SCSI 400.1: 10600 Disk
  [Created at block.256]
  Unique ID: ofUZ.ESrhO6fmky3
  SysFS ID: /class/block/sdd
  SysFS BusID: 4:0:0:1
  SysFS Device Link: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/host4/target4:0:0/4:0:0:1
  Hardware Class: disk
  Model: "Generic USB CF Reader"
  Vendor: usb 0x058f "Generic"
  Device: usb 0x6362 "USB CF Reader"
  Revision: "1.01"
  Driver: "usb-storage", "sd"
  Driver Modules: "usb_storage"
  Device File: /dev/sdd (/dev/sg4)
  Device Files: /dev/sdd, /dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.3:1.0-scsi-0:0:0:1, /dev/disk/by-id/usb-Generic_USB_CF_Reader_058F312D81B-0:1
  Device Number: block 8:48-8:63 (char 21:4)
  Drive status: no medium
  Config Status: cfg=new, avail=yes, need=no, active=unknown

05: SCSI 400.2: 10600 Disk
  [Created at block.256]
  Unique ID: Frkd.ESrhO6fmky3
  SysFS ID: /class/block/sde
  SysFS BusID: 4:0:0:2
  SysFS Device Link: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/host4/target4:0:0/4:0:0:2
  Hardware Class: disk
  Model: "Generic USB SM Reader"
  Vendor: usb 0x058f "Generic"
  Device: usb 0x6362 "USB SM Reader"
  Revision: "1.02"
  Driver: "usb-storage", "sd"
  Driver Modules: "usb_storage"
  Device File: /dev/sde (/dev/sg5)
  Device Files: /dev/sde, /dev/disk/by-id/usb-Generic_USB_SM_Reader_058F312D81B-0:2, /dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.3:1.0-scsi-0:0:0:2
  Device Number: block 8:64-8:79 (char 21:5)
  Drive status: no medium
  Config Status: cfg=new, avail=yes, need=no, active=unknown

06: SCSI 400.0: 10600 Disk
  [Created at block.256]
  Unique ID: LUEV.ESrhO6fmky3
  SysFS ID: /class/block/sdc
  SysFS BusID: 4:0:0:0
  SysFS Device Link: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/host4/target4:0:0/4:0:0:0
  Hardware Class: disk
  Model: "Generic USB SD Reader"
  Vendor: usb 0x058f "Generic"
  Device: usb 0x6362 "USB SD Reader"
  Revision: "1.00"
  Driver: "usb-storage", "sd"
  Driver Modules: "usb_storage"
  Device File: /dev/sdc (/dev/sg3)
  Device Files: /dev/sdc, /dev/disk/by-id/usb-Generic_USB_SD_Reader_058F312D81B-0:0, /dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.3:1.0-scsi-0:0:0:0
  Device Number: block 8:32-8:47 (char 21:3)
  Drive status: no medium
  Config Status: cfg=new, avail=yes, need=no, active=unknown

08: USB 00.0: 10a00 Hub
  [Created at usb.122]
  Unique ID: FKGF.4Nx_qoDfSd7
  Parent ID: pBe4.oLWCeziExdF
  SysFS ID: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0
  SysFS BusID: 2-1:1.0
  Hardware Class: hub
  Model: "Intel Integrated Rate Matching Hub"
  Hotplug: USB
  Vendor: usb 0x8087 "Intel Corp."
  Device: usb 0x0024 "Integrated Rate Matching Hub"
  Driver: "hub"
  Driver Modules: "usbcore"
  Speed: 480 Mbps
  Module Alias: "usb:v8087p0024d0000dc09dsc00dp01ic09isc00ip00in00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #15 (Hub)

09: USB 00.1: 11200 TV Card
  [Created at usb.122]
  Unique ID: 46Ud.FAyqNrWrw_5
  Parent ID: ADDn.4Nx_qoDfSd7
  SysFS ID: /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.1
  SysFS BusID: 1-1.3:1.1
  Hardware Class: tv card
  Model: "Logitech QuickCam Messenger Communicate"
  Hotplug: USB
  Vendor: usb 0x046d "Logitech, Inc."
  Device: usb 0x08f5 "QuickCam Messenger Communicate"
  Revision: "1.00"
  Driver: "snd-usb-audio"
  Driver Modules: "snd_usb_audio"
  Speed: 12 Mbps
  Module Alias: "usb:v046Dp08F5d0100dcFFdscFFdpFFic01isc01ip00in01"
  Driver Info #0:
    Driver Status: gspca_stv06xx is active
    Driver Activation Cmd: "modprobe gspca_stv06xx"
  Driver Info #1:
    Driver Status: snd_usb_audio is active
    Driver Activation Cmd: "modprobe snd_usb_audio"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #14 (Hub)

11: USB 00.0: 10a00 Hub
  [Created at usb.122]
  Unique ID: k4bc.FHd55n4xKo7
  SysFS ID: /devices/pci0000:00/0000:00:1a.0/usb1/1-0:1.0
  SysFS BusID: 1-0:1.0
  Hardware Class: hub
  Model: "Linux Foundation 2.0 root hub"
  Hotplug: USB
  Vendor: usb 0x1d6b "Linux Foundation"
  Device: usb 0x0002 "2.0 root hub"
  Revision: "5.04"
  Serial ID: "0000:00:1a.0"
  Driver: "hub"
  Driver Modules: "usbcore"
  Speed: 480 Mbps
  Module Alias: "usb:v1D6Bp0002d0504dc09dsc00dp00ic09isc00ip00in00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown

14: USB 00.0: 10a00 Hub
  [Created at usb.122]
  Unique ID: ADDn.4Nx_qoDfSd7
  Parent ID: k4bc.FHd55n4xKo7
  SysFS ID: /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1:1.0
  SysFS BusID: 1-1:1.0
  Hardware Class: hub
  Model: "Intel Integrated Rate Matching Hub"
  Hotplug: USB
  Vendor: usb 0x8087 "Intel Corp."
  Device: usb 0x0024 "Integrated Rate Matching Hub"
  Driver: "hub"
  Driver Modules: "usbcore"
  Speed: 480 Mbps
  Module Alias: "usb:v8087p0024d0000dc09dsc00dp01ic09isc00ip00in00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #11 (Hub)

15: USB 00.0: 10a00 Hub
  [Created at usb.122]
  Unique ID: pBe4.oLWCeziExdF
  SysFS ID: /devices/pci0000:00/0000:00:1d.0/usb2/2-0:1.0
  SysFS BusID: 2-0:1.0
  Hardware Class: hub
  Model: "Linux Foundation 2.0 root hub"
  Hotplug: USB
  Vendor: usb 0x1d6b "Linux Foundation"
  Device: usb 0x0002 "2.0 root hub"
  Revision: "5.04"
  Serial ID: "0000:00:1d.0"
  Driver: "hub"
  Driver Modules: "usbcore"
  Speed: 480 Mbps
  Module Alias: "usb:v1D6Bp0002d0504dc09dsc00dp00ic09isc00ip00in00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown

$ sudo dmesg | grep video
[    5.431555] videodev: Linux video capture interface: v2.00

$ tail -1 /etc/profile
export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so

Emerson · 04-27-2021, 08:32 PM

Well, what do you know, this one is tricky indeed. Search gave a few interesting links, until Ubuntu Wiki declared bluntly:

Quote:

Works with Skype 2.2.0.25 if you install the package libv4l-0:i386 and change the launcher to: env LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype. Requires an external microphone as audio and video do not work simultanouesly.

Never seen anything like this before ...

m4dj0e · 04-28-2021, 05:47 AM

So, basically: not a bug, buying extra hardware is a feature, works as designed.

To sum this up: I have all the hardware required, it worked just fine on my previous versions of Mint, but now the kernel has changed so much it doesn't support outdated hardware anymore. Lovely jubbly!

Emerson · 04-28-2021, 07:04 AM

To be fair it is not the kernel to blame. I don't think this driver ever was in kernel. All articles I saw talk about using a third-party driver, which apparently hasn't been kept updated.