uvcdynctrl spams uvcdynctrl-udev.log and fills up filesystem
I have a Dell XPS M1330 with the following webcam, as reported by lsusb:
Bus 007 Device 039: ID 05a9:7670 OmniVision Technologies, Inc. OV7670 Webcam
It seems that the connection between the webcam and motherboard is a bit loose, because when I pivot the lid, the little blue light on the webcam flashes on and off, and the above line disappears and reappears from my lsusb output. And, of course, any application using the webcam at the time crashes or has other troubles.
Anyway, when this happens, a process called uvcdynctrl spams the follwing message into /var/log/
[libwebcam] Warning: The driver behind device video0 has a slightly buggy implementation
of the V4L2_CTRL_
control ID if a control query fails. A workaround has been enabled.
It writes this message about 300000 times per second by my estimate, which means that even my gratuitiously large 50 GB root filesystem fills up in mere minutes, causing all sorts of interesting things to start happening.
I tried setting debug=0 in /lib/udev/
So I uninstalled the uvcdynctrl package. We'll see if any of my programs complain about it.
I realize that it might be diffucult to reproduce this, since you don't have my flaky webcam connection cord, but maybe you can trugger it by quickly plugging and unplugging a USB webcam.
|Changed in libwebcam (Ubuntu):|
|status:||New → Confirmed|