https://bugzilla.kernel.org/show_bug.cgi?id=102001
Bug ID: 102001
Summary: Advanced Silicon S.A CoolTouch Touchscreen touch delay
Product: Drivers
Version: 2.5
Kernel Version: 3.19-4.1
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: USB
Assignee: [email protected]
Reporter: [email protected]
Regression: Yes
Starting in kernel 3.19 and verified also in 4.0.9 and 4.1.3, my Acer T232HL
monitor with the Advanced Silicon S.S CoolTouch USB touch interface started
malfunctioning. The touchscreen still works and is detected but after running
xinput to map the touch interface with the monitor, it takes several touches to
register a click on the monitor. This happens after the touch interface has not
been used for a few seconds or when you move the mouse and then try to touch
the screen. The last known (verified) working kernel version is 3.18.18.
Malfunctioning Touchscreen:
[ 3.758018] usb 1-3.1: New USB device found, idVendor=2149, idProduct=2306
[ 3.758022] usb 1-3.1: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[ 3.758023] usb 1-3.1: Product: CoolTouch(TM) System
[ 3.758025] usb 1-3.1: Manufacturer: Advanced Silicon S.A
[ 3.761412] input: Advanced Silicon S.A CoolTouch(TM) System as
/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.1/1-3.1:1.0/0003:2149:2306.0002/input/input19
[ 3.761514] hid-multitouch 0003:2149:2306.0002: input,hidraw1: USB HID v1.10
Device [Advanced Silicon S.A CoolTouch(TM) System] on
usb-0000:00:14.0-3.1/input0
[ 3.762435] hid-generic 0003:2149:2306.0003: hiddev0,hidraw2: USB HID v1.10
Device [Advanced Silicon S.A CoolTouch(TM) System] on
usb-0000:00:14.0-3.1/input1
I've tested this with my touchscreen laptop and this bug does not manifest with
this touchscreen for some reason:
[ 2.798898] usb 1-13: New USB device found, idVendor=0eef, idProduct=a802
[ 2.798903] usb 1-13: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[ 2.798905] usb 1-13: Product: eGalaxTouch EXC7920-2003-11.03.02
[ 2.798907] usb 1-13: Manufacturer: eGalax Inc.
[ 2.800887] input: eGalax Inc. eGalaxTouch EXC7920-2003-11.03.02 as
/devices/pci0000:00/0000:00:14.0/usb1/1-13/1-13:1.0/0003:0EEF:A802.0001/input/input14
[ 2.801022] hid-multitouch 0003:0EEF:A802.0001: input,hiddev0,hidraw0: USB
HID v2.10 Device [eGalax Inc. eGalaxTouch EXC7920-2003-11.03.02] on
usb-0000:00:14.0-13/input0
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