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Don't reboot directly but first shutdown then start it. This is probably some driver problem. Hope it helps!


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Problem solved: in my case it was a hardware issue and Dell support replaced my screen today. To have Dell support helping me, I had to recover the original Windows 8 disk image on an external USB drive (to avoid destroying my Linux), and yesterday, Dell support took control of the machine and confirmed with their tools that it was not a software issue. And ...


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as a simple workaround just connect an external mouse via USB on boot and touchpad, keyboard, etc. will work without a reboot.


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It seems you need to calibrate your touch screen. Not all touch screens work with Ubuntu out of the box. Therefore, if you can look here for more on calibration. Scroll down to "Calibration" and read about xinput-calibrator. This should allow you to calibrate your screen.


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Thank you! The following worked for me on my Lenovo x200 tablet running Ubuntu 14.04: Edited: " /usr/share/X11/xorg.conf.d/10-evdev.conf " Add " Option "Ignore" "on" " to the end of touchscreen sections including pen stylus and erasure. After suspend mode, the touchscreen reactivated so I just needed to logout and then login


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Edit /usr/share/applications/google-chrome.desktop and change the Exec=/usr/bin/google-chrome-stable lines to Exec=/usr/bin/google-chrome-stable --touch-devices=NNN where NNN is your touch screen device. My touch screen device is 12.



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