Oh, this bug - bad state tracking in DP. Fixed around 3.5. ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Fix Released
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1045719 Title: Display port monitor detected, but no signal sent Status in “xserver-xorg-video-intel” package in Ubuntu: Fix Released Bug description: I have two monitors: one connected via VGA, and one connected via DisplayPort. When the X server starts, there is a signal on both monitors. But when the monitor on DisplayPort is switched off, then back on, the monitor no longer detects signal. However, the monitor is detected: dm and GNOME react to the new monitor and it appears in xrandr output. The signal comes back after restarting the X server. This makes me think it is a software problem, or at least it could be solved in software. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24 Uname: Linux 3.2.0-29-generic x86_64 ApportVersion: 2.0.1-0ubuntu12 Architecture: amd64 CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied Date: Tue Sep 4 11:19:49 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu MachineType: Dell Inc. OptiPlex 960 ProcEnviron: LANGUAGE=en_US: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic root=UUID=5e632d75-0208-4119-b729-3674308773df ro console=tty0 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/17/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.name: 0Y958C dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/17/2009:svnDellInc.:pnOptiPlex960:pvr:rvnDellInc.:rn0Y958C:rvrA00:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 960 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.7.8-0ubuntu1.4 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.3+8.0.2-0ubuntu3.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.3+8.0.2-0ubuntu3.2 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1045719/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp