I've been battling this issue for a few weeks- after switching to 20.04 from eoan and repartitioning, I have lost touch input on my Thinkpad X380 Yoga screen. Indeed, the problem persists on my Windows partition as well. I tried all my tty inputs and inputattaching drivers for w8001 and wacom_iv to no avail. Further, I redownloaded all kernel drivers and X input drivers from the Linux Wacom project and still got nothing.
Pen input is completely functional, however; including pressure sensitivity.
Some useful info:
me@computer:~$ sudo evtest No device specified, trying to scan all of /dev/input/event* Available devices: ...(other stuff)... /dev/input/event4: AT Translated Set 2 keyboard /dev/input/event5: Video Bus /dev/input/event6: ETPS/2 Elantech TrackPoint /dev/input/event7: ETPS/2 Elantech Touchpad /dev/input/event8: Logitech USB Optical Mouse /dev/input/event9: Wacom Pen and multitouch sensor Finger /dev/input/event10: Wacom Pen and multitouch sensor Pen ...(other stuff)... Select the device event number [0-19]: 9 Input driver version is 1.0.1 Input device ID: bus 0x3 vendor 0x56a product 0x5155 version 0x111 Input device name: "Wacom Pen and multitouch sensor Finger" Supported events: Event type 0 (EV_SYN) Event type 1 (EV_KEY) Event code 330 (BTN_TOUCH) Event type 3 (EV_ABS) Event code 0 (ABS_X) Value 0 Min 0 Max 11748 Resolution 40 Event code 1 (ABS_Y) Value 0 Min 0 Max 6604 Resolution 40 Event code 47 (ABS_MT_SLOT) Value 0 Min 0 Max 9 Event code 53 (ABS_MT_POSITION_X) Value 0 Min 0 Max 11748 Resolution 40 Event code 54 (ABS_MT_POSITION_Y) Value 0 Min 0 Max 6604 Resolution 40 Event code 57 (ABS_MT_TRACKING_ID) Value 0 Min 0 Max 65535 Properties: Property type 1 (INPUT_PROP_DIRECT) Testing ... (interrupt to exit)
and, of course, I had to interrupt due to no input being detected.
Any suggestions going forwards would be appreciated. Its worth noting that I do not know which tty port corresponds to pen for sure as I was unable to get any feedback when sudo screen /dev/ttySx was applied for all x on my machine. Specifically, I always get "[screen is terminating]" back.