Arch Linux

SammyF

Member

Registered: 2010-05-28

Posts: 26

USB device (Logitech QuickCam Messenger) stopped working (SOLVED)

Hey there,
I have a logitech quickcam messenger, which used to work perfectly 2 days ago. I updated my system yesterday and this morning, but I tried the cam again only now, and neither cheese nor webcamstudio work anymore (it never worked in skype since I moved from Mint to Arch a few weeks ago, but that was easily (and better) addressed by starting cheese and then using desktop sharing in Skype)

The webcam is recognized

sammy@Cosmic-Bandito ~$ lsusb
Bus 001 Device 007: ID 046d:08da Logitech, Inc. QuickCam Messanger
Bus 001 Device 006: ID 056a:00d4 Wacom Co., Ltd 
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB [Hama]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 046d:c513 Logitech, Inc. MX3000 Cordless Desktop Receiver
Bus 002 Device 002: ID 046d:c51a Logitech, Inc. MX Revolution/G7 Cordless Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

/dev/video and /dev/video0 are created.

cheese only shows a black window and spits out :

sammy@Cosmic-Bandito ~/Videos/Webcam$ cheese
libv4l2: error turning on stream: Input/output error

webcamstudio hangs when I try to start the preview and its output is :

libv4l2: error turning on stream: Input/output error
USB Camera (046d:08da) Error: BaseSrc: [v4l2src0],5, Error starting streaming on device '/dev/video0'.

EDIT: that's the output of dmesg when I reconnect the webcam (after having disconnected it obviously) :

[ 2216.282753] hub 1-1:1.0: state 7 ports 4 chg 0000 evt 0010
[ 2216.283231] hub 1-1:1.0: port 4, status 0101, change 0001, 12 Mb/s
[ 2216.387861] hub 1-1:1.0: debounce: port 4: total 100ms stable 100ms status 0x101
[ 2216.450867] usb 1-1.4: new full speed USB device using ehci_hcd and address 11
[ 2216.462234] hub 1-1:1.0: port 4 not reset yet, waiting 10ms
[ 2216.537006] usb 1-1.4: ep0 maxpacket = 8
[ 2216.538992] usb 1-1.4: skipped 4 descriptors after interface
[ 2216.538994] usb 1-1.4: skipped 2 descriptors after interface
[ 2216.538996] usb 1-1.4: skipped 1 descriptor after endpoint
[ 2216.538998] usb 1-1.4: skipped 2 descriptors after interface
[ 2216.539000] usb 1-1.4: skipped 1 descriptor after endpoint
[ 2216.539006] usb 1-1.4: udev 11, busnum 1, minor = 10
[ 2216.539008] usb 1-1.4: New USB device found, idVendor=046d, idProduct=08da
[ 2216.539010] usb 1-1.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2216.539081] usb 1-1.4: usb_probe_device
[ 2216.539084] usb 1-1.4: configuration #1 chosen from 1 choice
[ 2216.539364] usb 1-1.4: adding 1-1.4:1.0 (config #1, interface 0)
[ 2216.539400] zc3xx 1-1.4:1.0: usb_probe_interface
[ 2216.539402] zc3xx 1-1.4:1.0: usb_probe_interface - got id
[ 2216.539404] gspca: probing 046d:08da
[ 2217.384009] zc3xx: probe 2wr ov vga 0x0000
[ 2217.407008] zc3xx: probe sensor -> 0011
[ 2217.407010] zc3xx: Find Sensor HV7131R(c)
[ 2217.407304] input: zc3xx as /devices/pci0000:00/0000:00:0b.1/usb1/1-1/1-1.4/input/input14
[ 2217.407372] gspca: video0 created
[ 2217.407374] gspca: found int in endpoint: 0x82, buffer_len=8, interval=10
[ 2217.407381] usb 1-1.4: link qh8-0601/f6f9e240 start 5 [1/2 us]
[ 2217.407401] usb 1-1.4: adding 1-1.4:1.1 (config #1, interface 1)
[ 2217.407438] zc3xx 1-1.4:1.1: usb_probe_interface
[ 2217.407441] zc3xx 1-1.4:1.1: usb_probe_interface - got id
[ 2217.407443] gspca: probing 046d:08da
[ 2217.407455] snd-usb-audio 1-1.4:1.1: usb_probe_interface
[ 2217.407458] snd-usb-audio 1-1.4:1.1: usb_probe_interface - got id
[ 2217.410813] usb 1-1.4: adding 1-1.4:1.2 (config #1, interface 2)
[ 2217.410855] drivers/usb/core/inode.c: creating file '011'

EDIT 2: Just tried the webcam on another computer, and it works there. so it's not the hardware

any ideas? I'm pretty desperate, as this is the only way for me to keep in touch with my kids  at the moment

Last edited by SammyF (2010-05-28 20:44:15)

SammyF

Member

Registered: 2010-05-28

Posts: 26

Re: USB device (Logitech QuickCam Messenger) stopped working (SOLVED)

SOLVED : really stupid problem, but well... I'll completement my post and leave it for anybody who might hit the same problem :

dmesg looked like this when after I started cheese :

[ 3815.848011] usb 1-1.4: unlink qh8-3008/ec236980 start 0 [1/2 us]
[ 3815.848995] gspca: found int in endpoint: 0x82, buffer_len=8, interval=10
[ 3815.849001] usb 1-1.4: link qh8-0601/f6848ec0 start 1 [1/2 us]
[ 3816.696230] zc3xx: probe 2wr ov vga 0x0000
[ 3816.917369] ehci_hcd 0000:00:0b.1: iso sched full f0049c00 (now 652 max 2700)
[ 3816.917377] gspca: bandwidth not wide enough - trying again
[ 3816.938010] gspca: no transfer endpoint found

The (not so obvious) solution was to connect the webcam directly to the computer and not through a USB hub. I have no idea why it used to work and suddenly stopped, but it works again now.

sorry to take up your time, in case I did.

Last edited by SammyF (2010-05-28 20:44:56)