Hi
the inspection of the (main ?) differences of udev in Mint 13 Xfce and Ubuntu 12.04.1 gave the following
results which are not very helpful because nothing really seems to be affecting Canon cameras
1. udev Versions are both 175-0ubunut9.1 (amd64)
2. kernel is slightly different
Ubuntu 12.04.1 = 3.2.0-31-generic (3.2.0-31.50)
Linux Mint 13 Xfce = 3.2.0-23-generic
3. Comparison of config files in /etc/udev revealed the following differences:
1. Additional rule for Ubuntu 12.04.1 (VBox host):
/etc/udev/rules.d/10-vboxdrv.rules
Very probably no impact on Canon cameras
2. Just different comments
Very probably no impact on Canon cameras
3. an additional rule (in lines 13 and 14) in /etc/udev/rules.d/70-persistent-cd.rules
on Ubuntu 12.04.1 for Nokia UMTS sticks, I guess
# Datacard_CD-ROM (pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0)
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="Nokia_Datacard_CD-ROM_0.0.1-0:0", SYMLINK+="cdrom1", ENV{GENERATED}="1"
4. Comparison of config files in /lib/udev revealed the following differences:
1. Additional rules for Ubuntu 12.04.1
/lib/udev/gpsd.hotplug
/lib/udev/rules.d/40-gnupg2.rules
/lib/udev/rules.d/40-gpsd.rules
/lib/udev/rules.d/61-gnome-bluetooth-rfkill.rules
2. Additional rules for Linux Mint 13 (VBox)
/lib/udev/rules.d/40-virtualbox-guest-dkms.rules
/lib/udev/rules.d/90-hal.rules
3. One interesting diff in the file /lib/udev/rules.d/69-xorg-vmmouse.rules
Ubuntu 12.04.1:
ACTION=="add|change", ENV{ID_INPUT_MOUSE}=="?*", ATTRS{description}=="i8042 AUX port", KERNEL=="event[0-9]*", PROGRAM="/bin/vmmouse_detect", ENV{ID_INPUT.tags}="vmmouse"
Linux Mint 13:
ACTION=="add|change", ENV{ID_INPUT_MOUSE}=="?*", ATTRS{description}=="i8042 AUX port", KERNEL=="mouse[0-9]*", PROGRAM="/bin/vmmouse_detect", ENV{ID_INPUT.tags}="vmmouse"
Next step is to figure out how to get a log of the udev handling the events.
Cheers
Norbert.