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Old 10-19-2010, 12:19 PM   #1
nnjond
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Registered: Feb 2007
Distribution: Ubuntu 10.04
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Webcam self-sabotage


Hi, my webcam was working fine yesterday. Since then I've messed around with some software and now when I try to load an app I get:

Could not connect to video device (/dev/video0/). check connection.

I suspect It has something to do with installing xawtv which i had to xkill because I couldn't get it to work.

Could you advise me please?

Thanks for your time.


~$ lspci
00:00.0 RAM memory: nVidia Corporation MCP61 Memory Controller (rev a1)
00:01.0 ISA bridge: nVidia Corporation MCP61 LPC Bridge (rev a2)
00:01.1 SMBus: nVidia Corporation MCP61 SMBus (rev a2)
00:01.2 RAM memory: nVidia Corporation MCP61 Memory Controller (rev a2)
00:02.0 USB Controller: nVidia Corporation MCP61 USB Controller (rev a3)
00:02.1 USB Controller: nVidia Corporation MCP61 USB Controller (rev a3)
00:04.0 PCI bridge: nVidia Corporation MCP61 PCI bridge (rev a1)
00:05.0 Audio device: nVidia Corporation MCP61 High Definition Audio (rev a2)
00:06.0 IDE interface: nVidia Corporation MCP61 IDE (rev a2)
00:07.0 Bridge: nVidia Corporation MCP61 Ethernet (rev a2)
00:08.0 IDE interface: nVidia Corporation MCP61 SATA Controller (rev a2)
00:08.1 IDE interface: nVidia Corporation MCP61 SATA Controller (rev a2)
00:09.0 PCI bridge: nVidia Corporation MCP61 PCI Express bridge (rev a2)
00:0b.0 PCI bridge: nVidia Corporation MCP61 PCI Express bridge (rev a2)
00:0c.0 PCI bridge: nVidia Corporation MCP61 PCI Express bridge (rev a2)
00:0d.0 VGA compatible controller: nVidia Corporation C61 [GeForce 6150SE nForce 430] (rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
nnjond@nnjond-den:~$ sudo lshw
[sudo] password for nnjond:
nnjond-den
description: Desktop Computer
product: GeForce6100PM-M2
vendor: ECS
version: 7.0
width: 32 bits
capabilities: smbios-2.6 dmi-2.6 smp-1.4 smp
configuration: boot=normal chassis=desktop cpus=1 uuid=00020003-0004-0005-0006-000700080009
*-core
description: Motherboard
product: GeForce6100PM-M2
vendor: ECS
physical id: 0
version: 7.0
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: 080015 (06/04/2010)
size: 64KiB
capacity: 960KiB
capabilities: isa pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
*-cpu
description: CPU
product: AMD Athlon(tm) 64 Processor 3800+
vendor: Advanced Micro Devices [AMD]
physical id: 3
bus info: cpu@0
version: 15.15.2
serial: To Be Filled By O.E.M.
slot: CPU 1
size: 2400MHz
capacity: 2400MHz
width: 64 bits
clock: 200MHz
capabilities: boot fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp x86-64 3dnowext 3dnow up extd_apicid pni cx16 lahf_lm svm extapic cr8_legacy cpufreq
*-cache:0
description: L1 cache
physical id: 0
size: 128KiB
*-cache:1
description: L2 cache
physical id: 1
size: 512KiB
*-memory:0
description: System Memory
physical id: 24
slot: System board or motherboard
size: 1GiB
*-bank:0
description: DIMM DDR2 Synchronous 400 MHz (2.5 ns)
product: RM12864AA800.8FH��
vendor: Manufacturer00
physical id: 0
serial: 7674147F
slot: DIMM0
size: 1GiB
width: 64 bits
clock: 400MHz (2.5ns)
*-bank:1
description: [empty]
product: ModulePartNumber01
vendor: Manufacturer01
physical id: 1
serial: SerNum01
slot: DIMM1
*-bank:2
description: [empty]
product: ModulePartNumber02
vendor: Manufacturer02
physical id: 2
serial: SerNum02
slot: DIMM2
*-bank:3
description: [empty]
product: ModulePartNumber03
vendor: Manufacturer03
physical id: 3
serial: SerNum03
slot: DIMM3
*-memory:1 UNCLAIMED
description: RAM memory
product: MCP61 Memory Controller
vendor: nVidia Corporation
physical id: 4
bus info: pci@0000:00:00.0
version: a1
width: 32 bits
clock: 66MHz (15.2ns)
capabilities: ht bus_master cap_list
configuration: latency=0
*-isa
description: ISA bridge
product: MCP61 LPC Bridge
vendor: nVidia Corporation
physical id: 1
bus info: pci@0000:00:01.0
version: a2
width: 32 bits
clock: 66MHz
capabilities: isa bus_master
configuration: latency=0
resources: ioport:4f00(size=256)
*-serial
description: SMBus
product: MCP61 SMBus
vendor: nVidia Corporation
physical id: 1.1
bus info: pci@0000:00:01.1
version: a2
width: 32 bits
clock: 66MHz
capabilities: pm cap_list
configuration: driver=nForce2_smbus latency=0
resources: irq:11 ioport:4900(size=64) ioport:4d00(size=64) ioport:4e00(size=64)
*-memory:2 UNCLAIMED
description: RAM memory
product: MCP61 Memory Controller
vendor: nVidia Corporation
physical id: 1.2
bus info: pci@0000:00:01.2
version: a2
width: 32 bits
clock: 66MHz (15.2ns)
configuration: latency=0
*-usb:0
description: USB Controller
product: MCP61 USB Controller
vendor: nVidia Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: a3
width: 32 bits
clock: 66MHz
capabilities: pm ohci bus_master cap_list
configuration: driver=ohci_hcd latency=0 maxlatency=1 mingnt=3
resources: irq:20 memory:fdf7f000-fdf7ffff
*-usb:1
description: USB Controller
product: MCP61 USB Controller
vendor: nVidia Corporation
physical id: 2.1
bus info: pci@0000:00:02.1
version: a3
width: 32 bits
clock: 66MHz
capabilities: debug pm ehci bus_master cap_list
configuration: driver=ehci_hcd latency=0 maxlatency=1 mingnt=3
resources: irq:21 memory:fdf7ec00-fdf7ecff
*-pci:0
description: PCI bridge
product: MCP61 PCI bridge
vendor: nVidia Corporation
physical id: 100
bus info: pci@0000:00:04.0
version: a1
width: 32 bits
clock: 66MHz
capabilities: pci ht subtractive_decode bus_master cap_list
*-multimedia
description: Audio device
product: MCP61 High Definition Audio
vendor: nVidia Corporation
physical id: 5
bus info: pci@0000:00:05.0
version: a2
width: 32 bits
clock: 66MHz
capabilities: pm msi ht bus_master cap_list
configuration: driver=HDA Intel latency=0 maxlatency=5 mingnt=2
resources: irq:22 memory:fdf78000-fdf7bfff
*-ide:0
description: IDE interface
product: MCP61 IDE
vendor: nVidia Corporation
physical id: 6
bus info: pci@0000:00:06.0
logical name: scsi2
version: a2
width: 32 bits
clock: 66MHz
capabilities: ide pm bus_master cap_list emulated
configuration: driver=pata_amd latency=0 maxlatency=1 mingnt=3
resources: irq:0 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:ffa0(size=16)
*-disk
description: ATA Disk
product: WDC WD2500AAJB-0
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@2:0.0.0
logical name: /dev/sdb
version: 00.0
serial: WD-WCARW3024728
size: 232GiB (250GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=00033129
*-volume:0
description: EXT4 volume
vendor: Linux
physical id: 1
bus info: scsi@2:0.0.0,1
logical name: /dev/sdb1
logical name: /media/disk-3
version: 1.0
serial: 085fd9fa-7023-4bcc-bb0b-cd06ab68073e
size: 10GiB
capacity: 10GiB
capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
configuration: created=2010-09-25 13:35:52 filesystem=ext4 lastmountpoint=/media/diskUjm0Ӱ[���,��P^���l!��[��@^��H���H���0Ӏ modified=2010-10-17 12:22:01 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime,barrier=1,data=ordered mounted=2010-10-17 12:22:01 state=mounted
*-volume:1
description: EXT4 volume
vendor: Linux
physical id: 2
bus info: scsi@2:0.0.0,2
logical name: /dev/sdb2
logical name: /media/disk-2
version: 1.0
serial: 2437e0b4-c916-4138-b51b-731fc9438593
size: 10237MiB
capacity: 10237MiB
capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
configuration: created=2010-09-20 05:53:33 filesystem=ext4 lastmountpoint=/media/disk����U�∀`�'��P������l!���`�@�����(�1�(�1�U� modified=2010-10-17 12:21:51 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime,barrier=1,data=ordered mounted=2010-10-17 12:21:51 state=mounted
*-volume:2
description: EXT4 volume
vendor: Linux
physical id: 3
bus info: scsi@2:0.0.0,3
logical name: /dev/sdb3
logical name: /
version: 1.0
serial: 61eceb7e-3368-4b17-a20f-ae247000b1c9
size: 195GiB
capacity: 195GiB
capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
configuration: created=2010-09-25 13:35:58 filesystem=ext4 lastmountpoint=/D�x�����`��!��P~��l!��`��@~�*��*������h~�yo!��d modified=2010-09-27 17:38:00 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,barrier=1,data=ordered mounted=2010-10-17 12:15:46 state=mounted
*-volume:3
description: Extended partition
physical id: 4
bus info: scsi@2:0.0.0,4
logical name: /dev/sdb4
size: 10184MiB
capacity: 10184MiB
capabilities: primary extended partitioned partitioned:extended
*-logicalvolume
description: Linux swap / Solaris partition
physical id: 5
logical name: /dev/sdb5
capacity: 10184MiB
capabilities: nofs
*-bridge
description: Ethernet interface
product: MCP61 Ethernet
vendor: nVidia Corporation
physical id: 7
bus info: pci@0000:00:07.0
logical name: eth0
version: a2
serial: 44:87:fc:82:53:93
size: 100000000
capacity: 100000000
width: 32 bits
clock: 66MHz
capabilities: bridge pm msi ht bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=forcedeth driverversion=0.64 duplex=full ip=192.168.1.2 latency=0 link=yes maxlatency=20 mingnt=1 multicast=yes port=MII speed=100MB/s
resources: irq:43 memory:fdf7d000-fdf7dfff ioport:e480(size=8)
*-ide:1
description: IDE interface
product: MCP61 SATA Controller
vendor: nVidia Corporation
physical id: 8
bus info: pci@0000:00:08.0
logical name: scsi0
version: a2
width: 32 bits
clock: 66MHz
capabilities: ide pm msi ht bus_master cap_list emulated
configuration: driver=sata_nv latency=0 maxlatency=1 mingnt=3
resources: irq:23 ioport:e400(size=8) ioport:e080(size=4) ioport:e000(size=8) ioport:dc00(size=4) ioport:d880(size=16) memory:fdf7c000-fdf7cfff
*-disk
description: ATA Disk
product: ST3500418AS
vendor: Seagate
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: CC38
serial: 9VM73J2M
size: 465GiB (500GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=0005bfdd
*-volume
description: EXT4 volume
vendor: Linux
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
logical name: /media/disk-1
version: 1.0
serial: 5bf4e330-f6f8-4afc-b9c0-3a52712d2dd4
size: 465GiB
capacity: 465GiB
capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
configuration: created=2010-09-20 07:46:50 filesystem=ext4 lastmountpoint=/media/disk-1�����z�`���/$�P6��l!�`���@6ʐ�萱��z modified=2010-10-17 12:17:15 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime,barrier=1,data=ordered mounted=2010-10-17 12:17:15 state=mounted
*-ide:2
description: IDE interface
product: MCP61 SATA Controller
vendor: nVidia Corporation
physical id: 8.1
bus info: pci@0000:00:08.1
version: a2
width: 32 bits
clock: 66MHz
capabilities: ide pm msi ht bus_master cap_list
configuration: driver=sata_nv latency=0 maxlatency=1 mingnt=3
resources: irq:22 ioport:d800(size=8) ioport:d480(size=4) ioport:d400(size=8) ioport:d080(size=4) ioport:d000(size=16) memory:fdf77000-fdf77fff
*-pci:1
description: PCI bridge
product: MCP61 PCI Express bridge
vendor: nVidia Corporation
physical id: 9
bus info: pci@0000:00:09.0
version: a2
width: 32 bits
clock: 33MHz
capabilities: pci pm msi ht pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:40
*-pci:2
description: PCI bridge
product: MCP61 PCI Express bridge
vendor: nVidia Corporation
physical id: b
bus info: pci@0000:00:0b.0
version: a2
width: 32 bits
clock: 33MHz
capabilities: pci pm msi ht pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:41
*-pci:3
description: PCI bridge
product: MCP61 PCI Express bridge
vendor: nVidia Corporation
physical id: c
bus info: pci@0000:00:0c.0
version: a2
width: 32 bits
clock: 33MHz
capabilities: pci pm msi ht pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:42 memory:fe000000-fe0fffff
*-display
description: VGA compatible controller
product: C61 [GeForce 6150SE nForce 430]
vendor: nVidia Corporation
physical id: d
bus info: pci@0000:00:0d.0
version: a2
width: 64 bits
clock: 66MHz
capabilities: pm msi vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:21 memory:fc000000-fcffffff memory:d0000000-dfffffff memory:fb000000-fbffffff memory:fdf40000-fdf5ffff
*-pci:4
description: Host bridge
product: K8 [Athlon64/Opteron] HyperTransport Technology Configuration
vendor: Advanced Micro Devices [AMD]
physical id: 101
bus info: pci@0000:00:18.0
version: 00
width: 32 bits
clock: 33MHz
*-pci:5
description: Host bridge
product: K8 [Athlon64/Opteron] Address Map
vendor: Advanced Micro Devices [AMD]
physical id: 102
bus info: pci@0000:00:18.1
version: 00
width: 32 bits
clock: 33MHz
*-pci:6
description: Host bridge
product: K8 [Athlon64/Opteron] DRAM Controller
vendor: Advanced Micro Devices [AMD]
physical id: 103
bus info: pci@0000:00:18.2
version: 00
width: 32 bits
clock: 33MHz
*-pci:7
description: Host bridge
product: K8 [Athlon64/Opteron] Miscellaneous Control
vendor: Advanced Micro Devices [AMD]
physical id: 104
bus info: pci@0000:00:18.3
version: 00
width: 32 bits
clock: 33MHz
configuration: driver=k8temp
resources: irq:0
nnjond@nnjond-den:~$ lsusb
Bus 002 Device 002: ID 09da:0006 A4 Tech Co., Ltd Optical Mouse WOP-35 / Trust 450L Optical Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 005: ID 041e:4083 Creative Technology, Ltd Live! Cam Socialize [VF0640]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
nnjond@nnjond-den:~$
 
Old 10-19-2010, 12:35 PM   #2
Tinkster
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How about lsmod?

Try to unload & reload the module; try re-connecting the camera.
 
Old 10-19-2010, 12:51 PM   #3
nnjond
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I unplugged and plugged the webcam and attempted to load an app but got the same mssge.

The webcam light is always on.

~$ lsmod
Module Size Used by
nls_iso8859_1 3261 0
nls_cp437 4931 0
vfat 9201 0
fat 48240 1 vfat
parport_pc 26058 0
ppdev 5556 0
binfmt_misc 6599 1
snd_hda_codec_realtek 217980 1
snd_usb_audio 86704 3
snd_usbmidi_lib 17413 1 snd_usb_audio
nvidia 7088432 44
snd_hda_intel 22107 7
snd_hda_codec 87552 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 5040 2 snd_usb_audio,snd_hda_codec
snd_pcm 71475 6 snd_usb_audio,snd_hda_intel,snd_hda_codec
snd_seq_midi 4588 0
snd_rawmidi 17783 2 snd_usbmidi_lib,snd_seq_midi
snd_seq_midi_event 6047 1 snd_seq_midi
snd_seq 47174 3 snd_seq_midi,snd_seq_midi_event
snd_timer 19067 2 snd_pcm,snd_seq
snd_seq_device 5744 3 snd_seq_midi,snd_rawmidi,snd_seq
uvcvideo 55847 1
videodev 43098 2 uvcvideo
snd 49006 30 snd_hda_codec_realtek,snd_usb_audio,snd_usbmidi_lib,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,sn d_rawmidi,snd_seq,snd_timer,snd_seq_device
v4l1_compat 13359 2 uvcvideo,videodev
k8temp 3132 0
agpgart 32011 1 nvidia
soundcore 880 1 snd
snd_page_alloc 7120 2 snd_hda_intel,snd_pcm
i2c_nforce2 5179 0
lp 7342 0
parport 31492 3 parport_pc,ppdev,lp
hid_a4tech 2018 0
usbhid 36882 0
hid 67742 2 hid_a4tech,usbhid
usb_storage 40172 0
floppy 54311 0
forcedeth 49433 0
pata_amd 8746 4
sata_nv 19420 1
nnjond@nnjond-den:~$
 
Old 10-19-2010, 12:58 PM   #4
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And did you try to unload these?
Code:
uvcvideo 55847 1
videodev 43098 2 uvcvideo
Disconnect, unload, load, reconnect.

Also, check the process list for xawtv (it may still be dangling
even if you killed the frontend), and the list of open files
Code:
lsof | grep '/dev/video'

Cheers,
Tink
 
Old 10-19-2010, 01:05 PM   #5
nnjond
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Thanks for your interest. How do I unload x ?


nnjond@nnjond-den:~$ lsof | grep '/dev/video'
xawtv.bin 13444 nnjond DEL REG 0,5 7310 /dev/video0
xawtv.bin 13444 nnjond 4u CHR 81,0 0t0 7310 /dev/video0 (deleted)
 
Old 10-19-2010, 01:18 PM   #6
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OK. So xawtv IS still running.

Code:
pkill -9 xavwtv
And
Code:
modprobe -r <modules name>
 
Old 10-19-2010, 01:25 PM   #7
nnjond
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Thanks again. Haven't figured out what i'm doing yet?

nnjond@nnjond-den:~$ pkill -9 xavwtv
nnjond@nnjond-den:~$ modprobe -r uvcvideo 55847 1
FATAL: Module uvcvideo is in use.
nnjond@nnjond-den:~$ modprobe -r videodev 43098 2 uvcvideo
FATAL: Module videodev is in use.
nnjond@nnjond-den:~$
 
Old 10-19-2010, 01:29 PM   #8
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Quote:
Originally Posted by nnjond View Post
Thanks again. Haven't figured out what i'm doing yet?

nnjond@nnjond-den:~$ pkill -9 xavwtv
So it is dead? If you re-run the lsof line - is it gone?


Quote:
Originally Posted by nnjond View Post
nnjond@nnjond-den:~$ modprobe -r uvcvideo 55847 1
FATAL: Module uvcvideo is in use.
nnjond@nnjond-den:~$ modprobe -r videodev 43098 2 uvcvideo
FATAL: Module videodev is in use.
nnjond@nnjond-den:~$
Close.
Code:
modprobe -r uvcvideo
modprobe -r videodev
 
Old 10-19-2010, 01:41 PM   #9
nnjond
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nnjond@nnjond-den:~$ pkill -9 xavwtv
nnjond@nnjond-den:~$ lsof | grep '/dev/video'
xawtv.bin 13444 nnjond DEL REG 0,5 7310 /dev/video0
xawtv.bin 13444 nnjond 4u CHR 81,0 0t0 7310 /dev/video0 (deleted)
nnjond@nnjond-den:~$ modprobe -r uvcvideo
FATAL: Module uvcvideo is in use.
nnjond@nnjond-den:~$ modprobe -r videodev
FATAL: Module videodev is in use.
nnjond@nnjond-den:~$
 
Old 10-19-2010, 02:07 PM   #10
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Well ... looks like the process is TOTALLY stuck, and can't be
killed. You may need to reboot to rectify that.
 
  


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