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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?
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I have just bought a new webcam: a Creative Webcam Live! and I have been attempting to get it working. I'm using Ubuntu Breezy 5.10 and heard the driver that comes with the kernel is faulty so I compiled it myself and installed it (these instructions are all on Ubuntu forums, where I've similarly asked for help but nothing much has been forthcoming). I've also created appropriate symlinks in the /dev filesystem so where ever a program looks for my video device it'll find it. However I've come across a problem. Whenever I try to use a command line program to access the camera I get this error:
/dev/video: No space left on device
Which has left me completely puzzled. I've also tried a GUI program, camorama, but this just says it cannot connect to the device. What is the problem?
I don't know about the hardware but that's a very strange error message. Is the driver you compiled loading OK? Also if you unplug and replug the camera what log messages are generated? (Run dmesg command and check last dozen or so lines.)
Do the installation instructions say anything about configuring the system for autoloading the driver module?
Are you running 'udev'? (Does 'ps aux | grep udev' give a line with 'udevd' in it?)
I'm not familiar with the driver but at least there are no explicit error messages.
If udev is handling your device files you should try and check that it is working properly. Does the driver come with any instructions for configuring udev? If not maybe search for the combination of the driver name and 'udev'.
udev uses a set of rules (typically /etc/udev/rules.d/udev.rules) to create and remove special device files in /dev as hardware is plugged/unplugged. I think it is supposed to handle symlinks too. If you try to override/bypass it by creating files/links manually I'm not sure what happens.
It disappears and reappears correctly, I don't seem to be able to find anything that expressly refers to a video device such as a webcam in the udev.rules file (but that may just be because I don't know exactly what it would look like). How do I turn on debugging?
But if the /dev files are appearing/disappearing correctly it sounds as if the rules are OK. You could try adding the above to see if it makes any difference. You would have to reboot or restart udevd.
I'm not sure where udev writes it's messages. Somewhere in /var/log I guess. Do some plugging and unplugging and run 'tail' on recently changed files in there. Or just try 'dmesg'.
When other USB devices are present on the same host controller bus as the camera, the bandwidth requirements of the spca5xx driver are not being met, with some hardware configurations.
The spca5xx driver is asking for more bandwidth than is available which results in the following error messages:
No space left on device
can't open /dev/video0: No space left on device.
Please search ubuntuforums . org for my howto.
Howto Fix the “No space left on device” error message and Install the Spca5xx driver
This is my first post, I cannot post the url.
I hope that it helps you resolve your issues.
w w w . ubuntu forums . org / showthread.php?t=247646