Hi Christopher, For the daily build xenial-desktop-amd64.iso 12-Jan-2016, touch locations are correct initially but incorrect after changing the resolution.
Upon initial login, the displays and touches are scaled correctly. The initial resolution of the laptop and external display monitors are both 3840x2160. Laptop display is to the left of the monitor. In unity-control-center, I set the laptop resolution to 1920x1080. Touches did not register in the correct position. In unity-control-center, I set the laptop resolution back to 340x2160. Touches remained in the wrong position, where touching the right side of the laptop display registered as a touch on the touchless monitor. Thanks, David -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1533278 Title: Touchscreen input clicks in the wrong place with dual-monitor setup Status in xorg package in Ubuntu: Incomplete Bug description: I have a touchscreen ultrabook (Samsung Ativ Book 9 Pro) With a dual-monitor setup, touchscreen inputs are scaled to the whole desktop region rather than just the touchscreen display. For example, with two displays (laptop on the left), touching the right half of the laptop's touch screen registers as a click on the touchless monitor. I expected the click to register where I touched the touchscreen. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6 Uname: Linux 4.2.0-23-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Tue Jan 12 10:24:53 2016 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Device [8086:191b] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Samsung Electronics Co Ltd Device [144d:c12b] Subsystem: Samsung Electronics Co Ltd Device [144d:c12b] InstallationDate: Installed on 2015-12-22 (20 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: SAMSUNG ELECTRONICS CO., LTD. 940Z5L ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-23-generic.efi.signed root=UUID=24c27814-5135-4a80-9ce1-b932e2513949 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/20/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P04AFC.084.151020.SH dmi.board.asset.tag: No Asset Tag dmi.board.name: NP940Z5L-X01US dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: SGL8554A1H-C01-G001-S0001+10.0.10240 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP04AFC.084.151020.SH:bd10/20/2015:svnSAMSUNGELECTRONICSCO.,LTD.:pn940Z5L:pvrP04AFC:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP940Z5L-X01US:rvrSGL8554A1H-C01-G001-S0001+10.0.10240:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: 940Z5L dmi.product.version: P04AFC dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Tue Jan 12 14:42:39 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 16714 vendor SDC xserver.version: 2:1.17.2-1ubuntu9.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1533278/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

