The actual problem/bug is that for some reason the mainline Ubuntu 4.7 kernel lacks CONFIG_TOUCHSCREEN_ELAN. In 4.4 Ubuntu kernel CONFIG_TOUCHSCREEN_ELAN is defined, but the touchscreen doesn't work.
However with mainline Ubuntu kernel sources, and CONFIG_TOUCHSCREEN_ELAN enabled manually via a recompilation, touch screen now works! That means the touchscreen does work with mainline kernel but Ubuntu config is wrong for 4.7. ** Summary changed: - Touch screen not working on Acer Chromebook R11 + Touch screen not working on Acer Chromebook R11, CONFIG_TOUCHSCREEN_ELAN not enabled on mainline 4.7 kernel ** Tags removed: kernel-bug-exists-upstream ** Tags added: kernel-fixed-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1609745 Title: Touch screen not working on Acer Chromebook R11, CONFIG_TOUCHSCREEN_ELAN not enabled on mainline 4.7 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1609745/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
