Resolution too low of Webcam in Fedora

[Arrosa]

I, having a standard Fedora-13 system (at home), to which my webcam xawtv working smoothly. She uses the uvcvideo modules, it is a 2.6.33er kernel on it and the camera creates a proper resolution of 640x480. The same camera on a Fedora 8 system (headless, limited to the minimum necessary) provides only 176x144 pixels, which is not really fair, and throws an error message :

ioctl: VIDIOC_DQBUF (index = 0; type = VIDEO_CAPTURE; bytes used = 0, flags = 0x0 [] field = ANY;; timecode.type = 0; timecode.flags = 0; timecode.frames = 0; timecode.seconds = 0 ; timecode.minutes = 0; timecode.hours = 0; timecode.userbits = ""; sequence = 0; memory = unknown): Invalid argument

This system runs a home-made kernel 2.6.33.5 with fixed built-in modules uvcvideo, i2c-core, v4l1 and v4l2. The output of v4l-info, this camera is the same for both systems - to the end with the resolution of course. So what you members think about resolving this issue.?

[Lawford]

Try it with the drivers as a module, perhaps what has changed in the way of initialization. Compare whether there are differences, as the software from fedora-13 <-> fedora-8 asking the device, zBsp. Other default values in the source of the vanilla-module. Also looking at the error message, it seems the request for the module from the standard kernel made fedora8. You can adjust the settings of output to play around, respectively the level of the kernel debug output. Or else you may have a different version of the software used xawtv.

[Quattro]

Have you tried to download the new version of xawtv. Maybe just a newer version helps xawtv, to resolve the problem that you are getting. Perhaps we may be able with a not so current version of the program / libraries, perhaps the direct successor or similar distribution? Just the newer binary (+ its app-defaults) try? If there is a relatively simple option setting of the program does not succeed remains to upgrade the distribution? In existence for something like Fedora backports of debian-stable? Even the new version is not helping you out to resolve, then perhaps the fault lies not with xawtv, but rather in libraries.

[Arrosa]

xawtv is the same for years before in version 3.95 and is also the same as F8 to F13. Funnily enough, the place uvcmodul apparently the best resolution in F8 did not even - at least tells me that the debug output. It seems that any unpleasant term kernel problem to be. This has been canceled, the binaries from F9 run not on the CPU of the box (an older VIA processor). Also I would like to add that there is no Fedora for backports of debian-stable. On the software is all OK, the kernel and the module uvcvideo work exactly as desired. The cause is the USB interface, which is actually the expected resolutions simply too slow (1.1 instead of 2.0).