Adrian Johnson, thank you for performing the requested test. The next step would be to fully commit bisect from Raring to Saucy, in order to identify the offending commit. Could you please do this following https://wiki.ubuntu.com/X/Bisecting ?
** Tags added: latest-bios-f4 ** Tags removed: regression ** Tags added: needs-bisect regression-release -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1226009 Title: DisplayPort monitor is blank after unplug/replug or switch off/on Status in “xserver-xorg-video-ati” package in Ubuntu: Incomplete Bug description: I have two Dell U2711 monitors plugged into a HD7750 card. One monitor is connector via DisplayPort, the other via DVI. If I switch the monitors off then on again the monitor connected via DisplayPort displays a blank screen. The DVI monitor works correctly. I have to reboot the machine to get the DisplayPort monitor working again. This problem did not occur with 13.04. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: xserver-xorg-video-radeon 1:7.2.0-0ubuntu6 ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0 Uname: Linux 3.11.0-7-generic x86_64 ApportVersion: 2.12.1-0ubuntu4 Architecture: amd64 Date: Mon Sep 16 20:59:55 2013 InstallationDate: Installed on 2013-09-14 (2 days ago) InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902.1) MarkForUpload: True SourcePackage: xserver-xorg-video-ati UpgradeStatus: No upgrade log present (probably fresh install) --- .tmp.unity.support.test.0: ApportVersion: 2.12.7-0ubuntu6 Architecture: amd64 CasperVersion: 1.336ubuntu1 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 DistUpgraded: Fresh install DistroCodename: trusty DistroRelease: Ubuntu 14.04 DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde PRO [Radeon HD 7750] [1002:683f] (prog-if 00 [VGA controller]) Subsystem: PC Partner Limited / Sapphire Technology Device [174b:e213] LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140110) MachineType: Gigabyte Technology Co., Ltd. EG45M-DS2H MarkForUpload: True Package: xserver-xorg-video-ati 1:7.2.0-0ubuntu10 PackageArchitecture: amd64 ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity ProcVersionSignature: Ubuntu 3.13.0-1.16-generic 3.13.0-rc7 Tags: trusty ubuntu regression reproducible compiz-0.9 Uname: Linux 3.13.0-1-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 11/07/2008 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F4 dmi.board.name: EG45M-DS2H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd11/07/2008:svnGigabyteTechnologyCo.,Ltd.:pnEG45M-DS2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnEG45M-DS2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: EG45M-DS2H dmi.sys.vendor: Gigabyte Technology Co., Ltd. version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.50-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.0.1-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.0.1-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.907-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu1 xserver.bootTime: Sat Jan 11 10:47:19 2014 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Power Button KEYBOARD, id 7 input Logitech USB Laser Mouse MOUSE, id 8 input AT Translated Set 2 keyboard KEYBOARD, id 9 xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.14.5-1ubuntu2 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1226009/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

