The cause is this line in 45-libgphoto2.rules:
ATTRS{idVendor}=="0000", ATTRS{idProduct}=="0000", MODE="0660", GROUP="plugdev"
Of course this is a bogus line and should be removed from the libgphoto2 rules, but still, this rule is not supposed to match on a printer with nonzero vendor/product IDs?
The cause is this line in 45-libgphoto2. rules:
ATTRS{idVendor} =="0000" , ATTRS{idProduct }=="0000" , MODE="0660", GROUP="plugdev"
Of course this is a bogus line and should be removed from the libgphoto2 rules, but still, this rule is not supposed to match on a printer with nonzero vendor/product IDs?