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Ubuntu 16.04 (xenial) reached end-of-standard-support on April 29, 2021. I'm setting the status of this bug to 'Incomplete' as it's not seen any activity for some time. If this bug report has any relevance when using a currently maintained release of Ubuntu then please let us know which one(s) otherwise this bug report can be left to expire in approximately 60 days time. ** Changed in: xorg (Ubuntu) Status: Confirmed => Incomplete -- 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/1584386 Title: Main monitor doesn't wake up after system suspend Status in xorg package in Ubuntu: Incomplete Bug description: If I lock my Unity session (Super+L) and power down my two monitors using external power switch, when after a few minutes I restore the power to monitors and wake up Ubuntu only my VGA connected LG display wakes up. My main monitor - a DisplayPort connected Dell U2410 wakes up only for a brief moment (it's power led goes blue from yellow) but before any picture would be displayed it goes back to sleep mode (led goes yellow again). All of this is true only for X session. If I switch to tty1 (Ctrl+Alt+F1) the Dell wakes up correctly and shows tty1. Going back to X (Ctrl+Alt+F7) causes this monitor to go to power save mode again. The only means for me to get my main display back in X is to restart the computer, as logging in and out of X doesn't help. I have also tried running Displays configuration tool while in X, but what it only does is that once I click "Detect Displays" button Dell's power led goes blue for a brief moment and then immediately back to yellow (power save mode). I haven't encountered such behavior with Ubuntu 14.04, nor have I experienced right after migrating to 16.04. I believe this regression showed up with some update within the last two weeks. Both monitors are hooked up to AMD Radeon 5850 graphics card. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 BootLog: Scanning for Btrfs filesystems Ubuntu_Root: clean, 690241/3670016 files, 6292028/14652416 blocks 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: Sat May 21 21:22:43 2016 DistUpgraded: 2016-04-23 22:19:53,020 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory)) DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: virtualbox, 5.0.18, 4.4.0-21-generic, x86_64: installed virtualbox, 5.0.18, 4.4.0-22-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Cypress PRO [Radeon HD 5850] [1002:6899] (prog-if 00 [VGA controller]) Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Cypress PRO [Radeon HD 5850] [1002:0b00] InstallationDate: Installed on 2015-08-22 (272 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7583 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=a709e3c2-0c9b-4102-8135-3a38cc17bd0b ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to xenial on 2016-04-23 (27 days ago) dmi.bios.date: 08/18/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V1.11 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P55-GD65 (MS-7583) dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.11:bd08/18/2011:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7583:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnP55-GD65(MS-7583):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0: dmi.product.name: MS-7583 dmi.product.version: 1.0 dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sat May 21 20:49:42 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.3-1ubuntu2 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1584386/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp