Here is the workaround for the problem: The bug is in the package xserver-xorg-video-radeon 7.7.0, it is fixed in the later versions. Until it is fixed in 16.04 LTS, take the package from the newer releases.
In this example, we'll pull it from 16.10 (Yakkety Yak): a) add the line at the end of the /etc/apt/sources.list file: deb http://old-releases.ubuntu.com/ubuntu yakkety main b) add file "yakkety.pref" to the /etc/apt/preferences.d c) sudo apt-get update - this will load new repostiory and refresh the preferences d) sudo apt-get upgrade - this will pull xserver-xorg-video-radeon package v7.7.1, with fixed bug. e) log out from X That's it. After login, wait for the screen blank and wake it with key press or mouse action. ** Description changed: When using my AMD Radeon X1300 card, if the screen turns off due to inactivity, it cannot be woken up by moving the mouse or by hitting a key. - WORKAROUND: Type in a terminal: + If you type in a terminal: xset -display :0.0 dpms force off + you can wake the screen normally. - WORKAROUND: Typing the following in a terminal turns my screen off, and after typing this line, the screen can be woken up by moving the mouse or by hitting a key: + Typing the following in a terminal turns my screen off, and after typing this line, the screen can be woken up by moving the mouse or by hitting a key: gnome-screensaver-command -a - WORKAROUND: When I restart the display manager via ssh with another - computer, the screen then comes to life again and I can log back in. + When I restart the display manager via ssh with another computer, the + screen then comes to life again and I can log back in. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3.1 ProcVersionSignature: Ubuntu 4.4.0-143.169-generic 4.4.170 Uname: Linux 4.4.0-143-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.18 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: Sun Mar 24 11:11:17 2019 DistUpgraded: 2019-03-20 18:17:04,395 DEBUG icon theme changed, re-reading DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] RV516 [Radeon X1300/X1550 Series] [1002:7187] (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd RV516 [Radeon X1300/X1550 Series] [1458:215c] InstallationDate: Installed on 2010-05-13 (3236 days ago) InstallationMedia: Ubuntu-Server 10.04 LTS "Lucid Lynx" - Release amd64 (20100427) MachineType: FUJITSU SIEMENS ESPRIMO E5720 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-143-generic root=/dev/mapper/orao-root ro rootfstype=ext4 quiet SourcePackage: xorg UpgradeStatus: Upgraded to xenial on 2019-03-20 (3 days ago) dmi.bios.date: 02/05/2009 dmi.bios.vendor: FUJITSU SIEMENS // Phoenix Technologies Ltd. dmi.bios.version: 6.00 R1.18.2594.A1 dmi.board.name: D2594-A1 dmi.board.vendor: FUJITSU SIEMENS dmi.board.version: S26361-D2594-A1 dmi.chassis.type: 3 dmi.chassis.vendor: FUJITSU SIEMENS dmi.modalias: dmi:bvnFUJITSUSIEMENS//PhoenixTechnologiesLtd.:bvr6.00R1.18.2594.A1:bd02/05/2009:svnFUJITSUSIEMENS:pnESPRIMOE5720:pvr:rvnFUJITSUSIEMENS:rnD2594-A1:rvrS26361-D2594-A1:cvnFUJITSUSIEMENS:ct3:cvr: dmi.product.name: ESPRIMO E5720 dmi.sys.vendor: FUJITSU SIEMENS version.compiz: compiz 1:0.9.12.3+16.04.20180221-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.91-2~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~16.04.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~16.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.8 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+git20160325-1ubuntu1.2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sun Mar 24 11:06:06 2019 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Power Button KEYBOARD, id 7 input Logitech USB Receiver KEYBOARD, id 8 input Logitech USB Receiver KEYBOARD, id 9 xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.4-0ubuntu0.8 xserver.video_driver: radeon ** Attachment added: "apt preferences file for Yakkety Yak" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1821505/+attachment/5249927/+files/yakkety.pref -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1821505 Title: [radeon] screen cannot be turned back on after some time of inactivity To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1821505/+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