Dear Linux folks,
On a Dell XPS 13 9360 with a touchscreen, when it’s connect to an
external monitor, that is set up as the only display, the touchscreen –
although the internal monitor is disabled (in GNOME) – is still active
and draws power according to PowerTOP:
$ uname -a
Linux abreu 6.5.0-4-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.5.10-1
(2023-11-03) x86_64 GNU/Linux
$ lsusb | grep Touchscreen
Bus 001 Device 003: ID 04f3:2234 Elan Microelectronics Corp.
Touchscreen
$ sudo LANG= powertop
Power est. Usage Events/s Category
Description
9.39 W 100.0% Device USB device:
DELL DA300 (Bizlink)
1.39 W 100.0% Device USB device:
Touchscreen (ELAN)
Is there a way to disable the touchscreen, so it does not draw power?
`sudo modprobe -r hid-multitouch` also affects the touchpad, which is
not wanted.
Kind regards,
Paul
```
$ lsusb
Bus 004 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153
Gigabit Ethernet Adapter
Bus 004 Device 002: ID 2109:0820 VIA Labs, Inc. VL820 Hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 003: ID 06c4:c412 Bizlink International Corp. DELL DA300
Bus 003 Device 002: ID 2109:2820 VIA Labs, Inc. VL820 Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0c45:670c Microdia Integrated Webcam HD
Bus 001 Device 003: ID 04f3:2234 Elan Microelectronics Corp. Touchscreen
Bus 001 Device 002: ID 0cf3:e300 Qualcomm Atheros Communications QCA61x4
Bluetooth 4.0
Bus 001 Device 016: ID 413c:2113 Dell Computer Corp. KB216 Wired Keyboard
Bus 001 Device 015: ID 1bcf:0005 Sunplus Innovation Technology Inc.
Optical Mouse
Bus 001 Device 014: ID 0bda:5409 Realtek Semiconductor Corp. 4-Port USB
2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
```
