webcam not recognised ubuntu 64-bit 10.04 LTS

[Peter Robinson]

I've been helping a friend (via email) in an attempt to set up a new
Logitech C270 webcam with his ubuntu box.

https://wiki.ubuntu.com/HardwareSupportComponentsMultimediaWebCamerasLogitech
suggests that it should work ok.

Have installed cheese as an experiment - no live streaming.

Expected the device ID for this webcam to be 046d:0825 so tried

dmesg | grep 046d:0825

which did not yield any clues.

The system appears not to recognise the new device when it's plugged
into a known good USB port. Device not listed in output of lsusb. No
relevant entries at all in syslog or kern.log - any other logs that
should be checked? Would you expect to see some sort of attempt at
communication in the logs, even if it's to indicate that the
communication has failed?

Peter







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[Robin Paulson]

Post by Peter Robinson
I've been helping a friend (via email) in an attempt to set up a new
Logitech C270 webcam with his ubuntu box.
https://wiki.ubuntu.com/HardwareSupportComponentsMultimediaWebCamerasLogitech
suggests that it should work ok.
Have installed cheese as an experiment - no live streaming.
Expected the device ID for this webcam to be 046d:0825 so tried
dmesg | grep 046d:0825
which did not yield any clues.
The system appears not to recognise the new device when it's plugged
into a known good USB port. Device not listed in output of lsusb.
No relevant entries at all in syslog or kern.log - any other logs
that
should be checked? Would you expect to see some sort of attempt at
communication in the logs, even if it's to indicate that the
communication has failed?

what does dmesg give you, immediately after it's plugged in?

[Peter Robinson]

Post by Robin Paulson

Post by Peter Robinson
I've been helping a friend (via email) in an attempt to set up a new
Logitech C270 webcam with his ubuntu box.
https://wiki.ubuntu.com/HardwareSupportComponentsMultimediaWebCamerasLogitech
suggests that it should work ok.
Have installed cheese as an experiment - no live streaming.
Expected the device ID for this webcam to be 046d:0825 so tried
dmesg | grep 046d:0825
which did not yield any clues.
The system appears not to recognise the new device when it's plugged
into a known good USB port. Device not listed in output of lsusb.
No relevant entries at all in syslog or kern.log - any other logs that
should be checked? Would you expect to see some sort of attempt at
communication in the logs, even if it's to indicate that the
communication has failed?

what does dmesg give you, immediately after it's plugged in?

Very odd, I've been told that no entries are added to the output of
dmesg as a result of plugging it in. The webcam must be faulty?



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[Jaco]

Post by Peter Robinson
Very odd, I've been told that no entries are added to the output of
dmesg as a result of plugging it in. The webcam must be faulty?

Could very-well be - I can't say that I've ever has any issues with
Logitech kit on *nix.
Try it on a windows machine & see how that work.

- J

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[Bruce Kingsbury]

Also check that the USB port you're plugging it into is actually OK..
generally you should see 'something' in dmesg or lsusb even if the device
is completely unsupported. If you're not seeing anything I'd suspect the
device or the USB port is actually broken.

Very odd, I've been told that no entries are added to the output of dmesg

Post by Peter Robinson
as a result of plugging it in. The webcam must be faulty?

Could very-well be - I can't say that I've ever has any issues with
Logitech kit on *nix.
Try it on a windows machine & see how that work.
- J
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[Peter Robinson]

Post by Bruce Kingsbury
Also check that the USB port you're plugging it into is actually OK.
generally you should see 'something' in dmesg or lsusb even if the device
is completely unsupported. If you're not seeing anything I'd suspect the
device or the USB port is actually broken.

Very odd, I've been told that no entries are added to the output of dmesg

Post by Peter Robinson
as a result of plugging it in. The webcam must be faulty?

Could very-well be - I can't say that I've ever has any issues with
Logitech kit on *nix.
Try it on a windows machine& see how that work.
- J

The Logitech C270 webcam was taken back to the supplier and swapped for
another unit of the same model. The original must have been faulty.
For the replacement unit dmesg then yielded:

[16969.410023] usb 1-5: new high speed USB device using ehci_hcd and
address 5
[16969.772378] usb 1-5: configuration #1 chosen from 1 choice
[16969.814883] Linux video capture interface: v2.00
[16969.826885] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
[16969.923154] input: UVC Camera (046d:0825) as
/devices/pci0000:00/0000:00:1d.7/usb1/1-5/1-5:1.0/input/input6
[16969.923241] usbcore: registered new interface driver uvcvideo
[16969.923246] USB Video Class driver (v0.1.0)
[16970.920097] 5:3:1: cannot set freq 16000 to ep 0x86
[16971.920066] 5:3:2: cannot set freq 24000 to ep 0x86

Apparently the pavucontrol package was required in order to get the
sound working for Skype... one of the settings was subsequently changed
as described in the third paragraph here:
https://help.ubuntu.com/community/SkypeTroubleshooting

The last two lines of the dmesg output don't appear to have caused any
obvious issues. Were they just warnings rather than errors?

Anyway, my friend is happy with the outcome, so thanks for your help ;-)

Peter




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