The touchscreen on my Lenovo c340-11 Chromebook is not working.
Here is output of /proc/bus/input/devices:
I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:24/PNP0C09:00/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0
B: PROP=0
B: EV=21
B: SW=1
I: Bus=0019 Vendor=0000 Product=0003 Version=0000
N: Name="Sleep Button"
P: Phys=PNP0C0E/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input1
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=4000 0 0
I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
U: Uniq=
H: Handlers=kbd event2
B: PROP=0
B: EV=3
B: KEY=10000000000000 0
I: Bus=0019 Vendor=0000 Product=0000 Version=0001
N: Name="Tablet Mode Switch"
P: Phys=GOOG0006
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:24/PNP0C09:00/GOOG0006:00/input/input4
U: Uniq=
H: Handlers=event3
B: PROP=0
B: EV=21
B: SW=2
I: Bus=0011 Vendor=0001 Product=0001 Version=ab83
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input3
U: Uniq=
H: Handlers=sysrq kbd leds event4
B: PROP=0
B: EV=120013
B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7
I: Bus=0018 Vendor=04f3 Product=00a2 Version=0000
N: Name="Elan Touchpad"
P: Phys=
S: Sysfs=/devices/pci0000:00/0000:00:17.2/i2c_designware.3/i2c-3/i2c-ELAN0000:00/input/input5
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=5
B: EV=b
B: KEY=e520 10000 0 0 0 0
B: ABS=663800013000003
I: Bus=0010 Vendor=001f Product=0001 Version=0100
N: Name="PC Speaker"
P: Phys=isa0061/input0
S: Sysfs=/devices/platform/pcspkr/input/input6
U: Uniq=
H: Handlers=kbd event6
B: PROP=0
B: EV=40001
B: SND=6
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="sof-glkda7219max Headset Jack"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:0e.0/glk_da7219_mx98357a/sound/card0/input7
U: Uniq=
H: Handlers=kbd event7
B: PROP=0
B: EV=23
B: KEY=40 0 0 0 0 0 0 1000000000 c000000000000 0
B: SW=54
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="sof-glkda7219max HDMI/DP,pcm=5"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:0e.0/glk_da7219_mx98357a/sound/card0/input8
U: Uniq=
H: Handlers=event8
B: PROP=0
B: EV=21
B: SW=140
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="sof-glkda7219max HDMI/DP,pcm=6"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:0e.0/glk_da7219_mx98357a/sound/card0/input9
U: Uniq=
H: Handlers=event9
B: PROP=0
B: EV=21
B: SW=140
I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="sof-glkda7219max HDMI/DP,pcm=7"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:0e.0/glk_da7219_mx98357a/sound/card0/input10
U: Uniq=
H: Handlers=event10
B: PROP=0
B: EV=21
B: SW=140
Here is dmesg output related to the touchscreen:
[ +0.022204] raydium_ts i2c-RAYD0001:00: supply avdd not found, using dummy regulator
[ +0.000063] raydium_ts i2c-RAYD0001:00: supply vccio not found, using dummy regulator
[ +0.001857] elants_i2c i2c-ELAN0001:00: supply vcc33 not found, using dummy regulator
[ +0.000100] elants_i2c i2c-ELAN0001:00: supply vccio not found, using dummy regulator
[ +0.000034] elants_i2c i2c-ELAN0001:00: failed to get reset gpio: -16
[ +0.000347] elants_i2c: probe of i2c-ELAN0001:00 failed with error -16
[ +0.007171] raydium_ts i2c-RAYD0001:00: nothing at this address