[arch-general] finding corresponding udev rule for device

[G. Schlisio]

Am 19.06.2013 23:04, schrieb Damjan Georgievski:
>> hi all,
>> i want to customize the udev rule, that assigns my garmin gps device with a
>> device name. permissions need to be set different, so users have read/write
>> access.
>> the only problem is, that i dont know, which rule it is i have to customize.
>> is there any way to determine, which standard udev rule applies for which
>> device?
> What you need to do is create your own rules file in
> /etc/udev/rules.d/
> something with a big number, let's say 99-my-garmin.rules
>
> To find out how to make the rule (I suspect it's an usb device)... first run
> `udevadm monitor` then plug the device you will get the device path
> ... something like
> /devices/pci0000:00/0000:00:12.2/usb1/.../.../...
>
> Then run `udevadm info --attribute-walk --path=/devices/.../.../...`
> and you'll get a bunch of properties that you can match in your own rule file.
>
>
>
thanks for answering.
its a serial device, which is connected via serial-to-usb-adapter.
i created a file /etc/udev/rules.d/99-serial-to-usb-4-garmin.rules und 
tried a lot of rules, like
DRIVERS=="ch341-uart",ATTRS{idVendor}=="1a86",NAME="usbserial"
(see http://pastie.org/8061009 for 'udevadm info ...' output)
then i reloaded udev rules with
'udevadm control --reload'
and checked result with
'udevadm monitor'
i always get ttyUSB0, but not usbserial as i expected.
am i missing something?