USB camera causing OS crash?

[Julian Elischer]

Mark Ovens wrote:

> Canon Powershot A70
>
> FreeBSD redshift 5.3-STABLE FreeBSD 5.3-STABLE #0: Sat Jan  1 18:37:13 
> GMT 2005     mark at redshift:/usr/obj/usr/src/sys/REDSHIFT  i386
>
> ugen1: Canon Inc. Canon Digital Camera, rev 1.10/0.01, addr 2
>
> This camera used to work just fine in digikam but now doesn't (can't 
> say exactly when it stopped though). Keep getting "Can't connect to 
> camera" error when trying to open the camera although digikam does 
> auto-detect it.
>
> Googling threw up some info at 
> http://gphoto.org/doc/manual/permissions-usb.html about allowing USB 
> devices to be accessed by non-root users (section 4.3.3.1. FreeBSD 5.x 
> near the bottom of the page) which says to add the following to 
> /etc/rc.local:
>
> /sbin/devfs ruleset 10
> /sbin/devfs rule applyset
> /sbin/devfs rule add path ugen1* mode 666
> /sbin/devfs rule show
>
> I've done that, but now instead of "Can't connect to camera" the 
> computer locks up and after about 10 seconds reboots - all the 
> filesystems are reported as not being properly dismounted on reboot. 
> Nothing is written to any logs (obviously) so I can't provide any info. 


you probably need to run with ddb, kdb and a serial console, or at least 
from the console, outside of
X11 so you can see the error messages. The system will not go int ddb if 
the console is being controlled by X11.