On Tue, 9 Jun 2015, at 01:23 PM, Peter Korsgaard wrote: > In the likely situation that the touchscreens are of the same type they > will have the same device name, so you need to fish out the > corresponding /dev/input/event* device node and pass it to udevadm info > (assuming that the server is local) to E.G. key off the ID_PATH > (E.G. the USB port the touchscreen is connected to).
Yes, Mr Hutterer's "some device name" suggestion doesn't work since IIUC my user's device comes up twice: """ Also using xinput with device name method wouldn't work either because there are 2 same eGalax touchscreen devices listed from xinput, so it couldn't tell which one to use, the only unique identification between the two is the device ID.""" Sorry, I still don't quite understand how to map /dev/input/event* via udevadm. Do you have a worked example, perhaps with systemd I could peer at? http://s.natalian.org/2015-06-11/lsusb.txt Many thanks from Cornwall, _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
