Arch Linux

yuvadm

Member

From: Tel Aviv-Jaffa, Israel

Registered: 2012-08-08

Posts: 102

Website

Setting scroll on an ELAN touchscreen

On a brand new and fully updated Arch installation, I'm working on supporting the following touchscreen:

Bus 001 Device 005: ID 04f3:024b Elan Microelectronics Corp.

It appears to be identified correctly by evdev:

Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (II) config/udev: Adding input device ELAN Touchscreen (/dev/input/event6)
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) ELAN Touchscreen: Applying InputClass "evdev touchscreen catchall"
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (II) Using input driver 'evdev' for 'ELAN Touchscreen'
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) ELAN Touchscreen: always reports core events
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) evdev: ELAN Touchscreen: Device: "/dev/input/event6"
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (--) evdev: ELAN Touchscreen: Vendor 0x4f3 Product 0x24b
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (--) evdev: ELAN Touchscreen: Found absolute axes
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (--) evdev: ELAN Touchscreen: Found absolute multitouch axes
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (II) evdev: ELAN Touchscreen: No buttons found, faking one.
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (--) evdev: ELAN Touchscreen: Found x and y absolute axes
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (--) evdev: ELAN Touchscreen: Found absolute touchscreen
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (II) evdev: ELAN Touchscreen: Configuring as touchscreen
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) evdev: ELAN Touchscreen: YAxisMapping: buttons 4 and 5
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) evdev: ELAN Touchscreen: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.4/1-4.4:1.0/0003:04F3:024B.0001/input/input7
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (II) XINPUT: Adding extended input device "ELAN Touchscreen" (type: TOUCHSCREEN, id 11)
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (II) evdev: ELAN Touchscreen: initialized for absolute axes.
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) ELAN Touchscreen: (accel) keeping acceleration scheme 1
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) ELAN Touchscreen: (accel) acceleration profile 0
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) ELAN Touchscreen: (accel) acceleration factor: 2.000
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (**) ELAN Touchscreen: (accel) acceleration threshold: 4
Nov 22 22:26:40 boing gdm-Xorg-:1[922]: (II) config/udev: Adding input device ELAN Touchscreen (/dev/input/mouse0)

This is all from default behavior with no special configs.

Current behavior is that clicking works well, but scrolling doesn't work at all. I would like to change the default behavior to never click anything, and always scroll. Or even better, to only click, but scroll when dragging around (instead of marking text).

I would also like to hide the virtual keyboard that pops up.

Can anyone point me to prior art in this case? Or help me get this configuration? Thanks!

yuvadm

Member

From: Tel Aviv-Jaffa, Israel

Registered: 2012-08-08

Posts: 102

Website

Re: Setting scroll on an ELAN touchscreen

From looking at https://bugs.launchpad.net/ubuntu/+sour … ug/1084938 it seems xinput doesn't support scroll emulation at all for evdev touch events.

Can anyone confirm (or better, deny) this?

bokel1

Member

Registered: 2019-10-15

Posts: 1

Re: Setting scroll on an ELAN touchscreen

Same here, did you manage to find a solution?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,668

Re: Setting scroll on an ELAN touchscreen

Please don't necrobump 6 year old threads, a lot will have changed, make your own and include details about your own hardware and current software stack.

https://wiki.archlinux.org/index.php/Co … bumping%22

Closing.