Persist event id after reboot

Hi,
I have a ubuntu laptop and I use USB keyboard.
If dont use "--device " switch I get nothing. To get keystrokes I have use this switch. But, ltough I put same USB port, device (/dev/input/event..) changes after restart.
Is there any way to use more than one device at the same time?
Or
Is there any way to fix event no?

Start by reproducing the device selection behavior with the --device switch and observe how the /dev/input/event device changes after reboot. Investigate whether the requested behavior is stable device selection, simultaneous devices, or both. Done should mean the intended device remains usable across reboot, or multiple devices can be selected, with the behavior documented.

Written by the indexing model from the issue text.