Package: udev
Version:  0.114-2

Installing libgphoto2-2    version 2.4.0-4
caused all usb devices on a Toshiba A100 to disappear.

This seemed to be caused by some device driver being loaded
which disabled interrupts from the usb bridge.

modifying /etc/udev/rules.d/025_libgphoto2.rules to exclude rules for all
devices other than the ones I needed solved this problem. 

This behaviour was puzzling as there were no devices matching any of the
deleted rules, and it was not possible to find any device driver being
loaded by udev during the boot process.

Setting the irqpoll boot option also renabled the interrupts for the missing 
devices.

I am not quite sure whether this problem relates to the kernel , udev or
libgphoto.

The kernel version was 2.6.21.5


regards
Gregory Eckersley 

  



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