Re: [eGalax] no click events with touchscreen

On Thu, Jan 8, 2015 at 9:58 PM, Gavin Lambert [off-list ref] wrote:

On 9 January 2015 13:08, quoth Benjamin Tissoires:

quoted

You can also make an udev rule which write 1040 in
/sys/bus/hid/devices/0003\:0EEF\:0001.*/quirks on plug in an udev rule (you
should probably rely on the path given by the udev rule instead of writing
the wildcard).

I get a "permission denied" error trying to write to that pseudo-file after boot, even with sudo.  (It currently contains 3088.)

You need root access, so you'll need a true root shell to be able to
write on the file.

I also tried writing the following udev rule and rebooting, but it had no effect; not sure if I'm doing it wrong or if it's having the same problem:

SUBSYSTEM=="usb", ATTRS{idVendor}=="0eef", ATTRS{idProduct}=="0001", RUN+="echo 1040 > /sys/bus/hid/devices/0003\:0EEF\:0001.0002/quirks"

IIRC, plain redirection can not work anymore with recent udev/systemd
versions. Also, the .0002 at the end should not be encoded directly in
the udev rule. You can rely on %k, which is the name of the device
given by udev.

I think, you should use something like that:

DRIVER=="hid-multitouch",
ENV{MODALIAS}=="hid:b0003g0004v00000EEFp00000001", RUN+="/bin/sh
/etc/udev/fix_hid_multitouch.sh %k"

With /etc/udev/fix_hid_multitouch.sh being:

#> cat > /etc/udev/fix_hid_multitouch.sh << EOF
#!/bin/bash

DEVICE=$1

echo 1040 > "/sys/bus/hid/devices/${DEVICE}/quirks"
EOF

This is untested, but it should give you some more clues to go further
if it does not work directly.

Cheers,
Benjamin