Po-Hsu Lin, the issue you are reporting is an upstream one. Could you please report this problem through the appropriate channel by following the instructions _verbatim_ at https://wiki.ubuntu.com/Bugs/Upstream/kernel ?
Please provide a direct URL to your e-mail to the mailing list once you have made it so that it may be tracked. Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Confirmed => Triaged -- 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/1340110 Title: [Dell Latitude 12 Rugged Extreme 7204] Touchscreen 3-finger / 4-finger gestures does not work Status in HWE Next Project: New Status in “linux” package in Ubuntu: Triaged Bug description: CID: 201402-14663 Dell Latitude 12 Rugged Extreme According to Dell's website[1], this system comes with a multi-touch screen But only two-finger pinch / expand zoom is supported on this system Steps: 1. Install 14.04 + update (3.13.0-30), boot to desktop 2. Try to open Dash with 4 fingers tap 3. Try to move a window with 3 fingers tap Expected results: * 3 / 4-finger gesture should work Actual result: * Nothing happened [1] 11.6” HD (1366 x 768) 16:9 Direct-View outdoor-readable display with resistive multi-touch http://www.dell.com/us/business/p/latitude-7204-laptop/pd ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-30-generic 3.13.0-30.55 ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ubuntu 1501 F.... pulseaudio /dev/snd/controlC0: ubuntu 1501 F.... pulseaudio CRDA: country TW: (2402 - 2472 @ 40), (3, 27) (5270 - 5330 @ 40), (3, 17), DFS (5735 - 5815 @ 40), (3, 30) CurrentDesktop: Unity Date: Thu Jul 10 05:36:18 2014 HibernationDevice: RESUME=UUID=b68f02ad-f5e4-4eb9-b88d-e85f60666734 InstallationDate: Installed on 2014-07-10 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Dell Inc. Latitude 12 Rugged Extreme (7204) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic.efi.signed root=UUID=bdd00fe9-0df9-4b71-92c5-5f94c533f725 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-30-generic N/A linux-backports-modules-3.13.0-30-generic N/A linux-firmware 1.127.4 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/12/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A00 dmi.board.name: 0TH1GJ dmi.board.vendor: Dell Inc. dmi.board.version: X02 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA00:bd05/12/2014:svnDellInc.:pnLatitude12RuggedExtreme(7204):pvr01:rvnDellInc.:rn0TH1GJ:rvrX02:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude 12 Rugged Extreme (7204) dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1340110/+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