** Description changed: When connecting a BenQ T905 through HDMI with a resolution of around 1280x1020, the mouse starts wobling back and forth 4-5 times a second. Checking the log, it seems like the system cant decide on a correct resolution and changing it back and forth between different resolutions 4-5 times a second. There exists similar bugs for Ubuntu 14.04 based distros (Linux Mint 17), and reading there it seems its a problem with something not supporting lower than average external monitor resolutions. My main screen is 1366x768. + And if you scroll to the bottom of XorgLog.txt, it's actually changing + the refresh rate of the external monitor between 60 and 76 4-5 times a + second. + ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8 ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 .tmp.unity.support.test.0: - + ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 CasperVersion: 1.340 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 Dec 16 22:16:10 2014 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: - Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) - Subsystem: Samsung Electronics Co Ltd Device [144d:c0d7] + Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) + Subsystem: Samsung Electronics Co Ltd Device [144d:c0d7] LiveMediaBuild: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C/532U3C ProcEnviron: - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash -- SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/25/2013 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: P12ABH dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: NP540U3C-A03SE dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: FAB1 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP12ABH:bd10/25/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C/532U3C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP540U3C-A03SE:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 530U3C/530U4C/532U3C dmi.product.version: 0.1 dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Tue Dec 16 22:13:01 2014 xserver.configfile: default xserver.errors: - + xserver.logfile: /var/log/Xorg.0.log xserver.outputs: - + xserver.version: 2:1.15.1-0ubuntu2
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1403228 Title: unable to connect external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1403228/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
