Is there any way to check if it's an upstream bug? There is a bug opened on kernel bugzilla, but no updates (other than my additional discoveries). This bug appears to be distro dependent, e.g. doesn't happen on Arch. I also tried asking around on the forum to try to further isolate the issue, but got no response.
The bug on kernel bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=91281 ** Bug watch added: Linux Kernel Bug Tracker #91281 http://bugzilla.kernel.org/show_bug.cgi?id=91281 -- 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/1354604 Title: Regression: touchscreen-as-input not recognized in recent kernels (Dell Venue 11 Pro 7130) Status in linux package in Ubuntu: Triaged Bug description: Due to bug #1354598, my Dell Venue 11 Pro 7130 tablet is unusable as a tablet with the current Trusty kernel, so I have been attempting to find a more recent kernel for which the screen functions both as a display and a touch input device. No luck so far. (Well, actually, oddly enough, that's not quite true: I installed the 05-Aug-2014 01:21 daily live CD of Kubuntu Active, which is i386 only, and *that* worked just fine, from a kernel/hardware perspective. But I'm hoping to get an amd64 kernel working.) When booting either of the most recent Utopic kernel (3.16.0-6) and the kernel team's latest build of upstream (3.16.0-031600), the touchscreen is unresponsive to touch input, and inspection of the logs confirms that the multitouch device is not recognized as such. Will run apport-collect. Also the udev logs attached to bug #1354598 may be interesting. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1354604/+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