** Description changed: - When I start Ubuntu 16.04 from USB on a Dell Venue 11 Pro (Intel system) - 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. So I - don't know what else I can do. + 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
** Tags added: kernel-bug touch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574594 Title: Touchscreen working in live system but not after installation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1574594/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
