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9734
problem with webcam
I don't have a /dev/video or /dev/video0 any more (or any /dev/videoN).
cheese/google-hangouts/vlc can't find a video input device.
lsusb, lspci both lack references to a camera (lspci lists the wifi card & the audio device, so that's where I'd expect it).
Has anybody run into this problem before? Is there a way to tell if it's hardware- or software-related?
Any help appreciated.
mattpanaro
2 Posts
0
January 15th, 2015 11:00
This issue magically resolved itself. These things happened in the interim (not necessarily in this order):
several reboots
boot from USB key with 14.4.1 on it (when the webcam still failed to work, I started to assume it was a hardware failure)
update some packages that seemed to have nothing to do with video/the kernel/anything relevant
plug USB webcam into XPS 13, get /dev/video0, but no actual video (just black screen)
go find another ubuntu laptop and:
1. plugin USB webcam: it works
2. try like hell to figure out how to list video/camera devices (lsusb, lspci, lshw all fail); discover that they show up in dmesg with the string 'uvcvideo'; run dmesg on XPS 13 just to see what would happen: output related to inegrated web camera was there; fired up cheese, and camera comes on/is working.
next steps: determine appropriate sacrifice to appropriate supernatural force
DELL-Jared D
350 Posts
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January 15th, 2015 20:00
In the past, I've agonized over why the webcam wasn't working, only to realize that I'd blacklisted the necessary kernel module!