According to https://wiki.ubuntu.com/Bugs/FindRightPackage#Hardware_Malfunctions this bug should be filed against the kernel.
** Package changed: ubuntu => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1574594 Title: Touchscreen working in live system but not after installation Status in linux package in Ubuntu: New Bug description: When I start Ubuntu 16.04 from USB on a Dell Venue 11 Pro 7139 the touchscreen works well. After installing and re-starting the system the touch support is completely gone. As far as I can see, all modules are loaded in life system as well as in installed system. There seem to be no differences in kernel versions and start options as well. The Xorg-logs of the live and the installed system show no major differences except different numbers of the event-files in /dev/input. Both systems recognize the Synaptics device as touchscreen: (II) evdev: SYNA7500:00 06CB:3AF0: Configuring as touchscreen. The main difference are thousands of evbug entries like the following two in the kern.log of the installed system while none are reported in the live system. Apr 25 14:10:05 uwe-Venue-11-Pro-7139 kernel: [ 61.288764] evbug: Event. Dev: input7, Type: 0, Code: 0, Value: 0 Apr 25 14:10:05 uwe-Venue-11-Pro-7139 kernel: [ 61.406747] evbug: Event. Dev: input7, Type: 3, Code: 57, Value: 44. They appear every time I use the touchpad. So I think the detection of input devices is kind of faulty in the installed system. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574594/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
