I found a workaround from https://answers.launchpad.net/ubuntu/+question/243145 that works with the X201 tablet, and it does not require rebooting, logging off and on again, or switching between virtual consoles. Try entering
sudo inputattach --daemon -w8001 /dev/ttyS4 If that does not work for you, then it is likely that the Wacom device is represented by a different device path (i.e. not /dev/ttyS4). Try executing sudo cat /proc/tty/driver/serial | grep 16550A which should output lines that look like the following: 4: uart:NS16550A port:00000200 irq:5 tx:19 rx:411732 RTS|DTR The grep command filters out the /proc/tty/driver/serial output so that only 16550A entries are shown (since the Wacom device is a 16550A serial device). The number 4 at the beginning of the line before the colon indicates that this line corresponds to TTY device #4, which is represented by /dev/ttyS4. So, for example, if the number was 1 instead of 4, you would enter /dev/ttyS1 in the inputattach command instead of /dev/ttyS4. If you see multiple lines in the filtered /proc/tty/driver/serial output, I would suggest going down the list until you find the correct device that reactivates the touchscreen. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xinput in Ubuntu. https://bugs.launchpad.net/bugs/1275416 Title: touchscreen do not work after suspend/resume Status in “xinput” package in Ubuntu: Confirmed Bug description: My laptop (Thinkpad X200T with multi-touch screen) installed the 'Trusty' ubuntu 14.04 (64bits), touchscreen works well after cold boot! But after suspend/resume, touchsreen do not response. Execute 'xsetwacom --list' in terminal, there is nothing, both 'wacom touch' and 'wacom stylus' are gone. I must logout and relogin or reboot, the touchscreen can be normal again. By the way, the same problem happens in the 'Saucy' ubuntu 13.10 (64bits). But in 'Raring' ubuntu 13.04 (64bits), this problem does no exist, touchscreen WORKS WELL after suspend/resume. This Thinkpad X200T updated the newest BIOS, and keep ubuntu OS up to date. Please fix this bug, because 14.04 is a very important version for touchscreen devices, and i think 'suspend/resume' function is important too. Thanks! --------------------------------------- Feb 4, 2014 update Oh I'm sorry, I find a new change for this bug that I never noticed before. I keep Trusty ubuntu up to date(Feb 4, 2014). When the OS's first boot from cold boot, touchscreen works well. Then if suspend/resume for the first time, touchscreen will not response. At this moment, logout and relogin, touchscreen works well again even after suspend/resume. Simply put, touchscreen do not response only after the first suspend/resume since a cold boot. Once the OS logout and relogin, touchscreen will work well after any suspend/resume. The key point is that the OS must logout and relogin for at least one time. Always keep 'Trusty' ubuntu OS updated. that's a strange bug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xinput/+bug/1275416/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
