Comment # 19 on bug 938659 from Markus Elfring

(In reply to Dr. Werner Fink from comment #15)
> in /usr/lib/udev/rules.d/50-udev-default.rules to let become the printer a
> printer with group "lp"

How do you think about to add a parameter like "RUN{program ���}" there for
further problem analysis so that a special command would test the expected
setting of useful device permissions and log failures in a way that would be
noticed earlier?


(In reply to Dr. Werner Fink from comment #18)
> Is this Kyrocera a so called 3in1 or 4in1 model

No. - You can look at a corresponding detailed device description from the
vendor for example.
http://www.kyoceradocumentsolutions.co.uk/index/products/product/ecosysp6021cdn.technical_specification.html


> and/or has aybe an own card bridge to read memory cards?

I am unsure if this detail might become relevant.

The discussed model provides an USB socket at the front of its case. I do not
want to plug an external storage device in at the moment.   ;-)


> If you switch off your printer and then run in an terminal the command

Sonne:~ # lsusb -s 4
Bus 001 Device 004: ID 0482:063e Kyocera Corp. 


>      udevadm monitor --env --kernel udev
> 
> to switch on again your printer, what does you see?

monitor will print the received events for:
KERNEL - the kernel uevent

KERNEL[13287.152254] add      /devices/pci0000:00/0000:00:02.1/usb1/1-2 (usb)
ACTION=add
BUSNUM=001
DEVNAME=/dev/bus/usb/001/004
DEVNUM=004
DEVPATH=/devices/pci0000:00/0000:00:02.1/usb1/1-2
DEVTYPE=usb_device
MAJOR=189
MINOR=3
PRODUCT=482/63e/0
SEQNUM=2642
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[13287.153726] add      /devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2:1.0
(usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2:1.0
DEVTYPE=usb_interface
INTERFACE=7/1/2
MODALIAS=usb:v0482p063Ed0000dc00dsc00dp00ic07isc01ip02in00
PRODUCT=482/63e/0
SEQNUM=2643
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[13287.153806] add      /class/usbmisc (class)
ACTION=add
DEVPATH=/class/usbmisc
SEQNUM=2644
SUBSYSTEM=class

KERNEL[13287.153854] add     
/devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2:1.0/usbmisc/lp0 (usbmisc)
ACTION=add
DEVNAME=/dev/usb/lp0
DEVPATH=/devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2:1.0/usbmisc/lp0
MAJOR=180
MINOR=0
SEQNUM=2645
SUBSYSTEM=usbmisc