We can perform a kernel bisect to identify the commit that introduced this regression. We first need to identify the last kernel version that did not have the bug and the first kernel version that did.
Can you next test v4.13-rc1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13-rc1/ ** Also affects: linux (Ubuntu Bionic) Importance: High Status: Confirmed ** Also affects: linux (Ubuntu Artful) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Artful) Status: New => In Progress ** Changed in: linux (Ubuntu Bionic) Status: Confirmed => In Progress ** Changed in: linux (Ubuntu Artful) Importance: Undecided => High ** Changed in: linux (Ubuntu Artful) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) -- 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/1745342 Title: touchscreen that worked in artful with 4.12 no longer works with 4.13 Status in linux package in Ubuntu: In Progress Status in linux source package in Artful: In Progress Status in linux source package in Bionic: In Progress Bug description: I have a Dell Venue 11 Pro 7139, and when I installed artful on it (before release) it worked fine. Recently (over the xmas break I think but I'm not sure; this is not a machine I intended to pay too much attention to) the kernel moved from 4.12 to 4.13, and the touchscreen has stopped working. I _think_ the last kernel to work was 4.12.0-13. I haven't done any sort of bisection though. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-31-generic 4.13.0-31.34 ProcVersionSignature: Ubuntu 4.13.0-31.34-generic 4.13.13 Uname: Linux 4.13.0-31-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: john 1041 F.... pulseaudio /dev/snd/pcmC1D0p: john 1041 F...m pulseaudio /dev/snd/controlC1: john 1041 F.... pulseaudio Date: Thu Jan 25 10:18:51 2018 InstallationDate: Installed on 2017-07-10 (198 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170709) MachineType: Dell Inc. Venue 11 Pro 7139 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-31-generic.efi.signed root=UUID=73f0adac-318e-4295-9980-15fb36257cd5 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.13.0-31-generic N/A linux-backports-modules-4.13.0-31-generic N/A linux-firmware 1.169.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/15/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A16 dmi.board.name: 0Y4RMT dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA16:bd06/15/2015:svnDellInc.:pnVenue11Pro7139:pvr01:rvnDellInc.:rn0Y4RMT:rvrA00:cvnDellInc.:ct8:cvr: dmi.product.name: Venue 11 Pro 7139 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1745342/+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
