Christophe, the issue you are reporting is an upstream one. Could you please report this problem via https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&component=Driver/Radeon ?
Please provide a direct URL to your bug report once you have made it so that it may be tracked. Thank you for your help. ** Package changed: xorg (Ubuntu) => xserver-xorg-video-ati (Ubuntu) ** Changed in: xserver-xorg-video-ati (Ubuntu) Importance: Low => Medium ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Incomplete => Triaged -- 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/1577170 Title: screen cannot be turned back on after being switched off after some time of inactivity Status in xserver-xorg-video-ati package in Ubuntu: Triaged Bug description: I did a fresh install of ubuntu 16.04 on my old dell computer in which there is an ati radeon X1300 graphics card. Whenever the screen turns off due to inactivity, it cannot be woken up by moving the mouse or by hitting a key. When I kill the Xorg process via ssh with another computer, the screen then comes to life again and I can log back in. When I remove the graphic card from the computer and use the built in graphic card instead, the bug doesn't occur. So I guess it is related to the radeon driver. Oddly enough, there is no problem waking the screen when I type "xset -display :0.0 dpms force off" in a terminal. Moreover typing gnome-screensaver-command -a 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. I'm confused. --- .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 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 DistUpgraded: Fresh install DistroCodename: xenial DistroRelease: Ubuntu 16.04 DistroVariant: ubuntu DkmsStatus: virtualbox, 5.0.18, 4.4.0-24-generic, x86_64: installed virtualbox, 5.0.18, 4.4.0-28-generic, x86_64: installed ExtraDebuggingInterest: No GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] RV516 [Radeon X1300/X1550 Series] [1002:7183] (prog-if 00 [VGA controller]) Subsystem: Dell RV516 [Radeon X1300/X1550 Series] [1028:0302] Subsystem: Dell RV516 [Radeon X1300/X1550 Series] (Secondary) [1028:0303] InstallationDate: Installed on 2016-04-23 (71 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Dell Inc. Dell DM061 Package: xorg 1:7.7+13ubuntu3 PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-28-generic root=UUID=d8d495da-2071-481b-8e28-497d8eca9aff ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13 Tags: xenial ubuntu compiz-0.9 Uname: Linux 4.4.0-28-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/24/2007 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.4.0 dmi.board.name: 0WG864 dmi.board.vendor: Dell Inc. dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.4.0:bd05/24/2007:svnDellInc.:pnDellDM061:pvr:rvnDellInc.:rn0WG864:rvr:cvnDellInc.:ct6:cvr: dmi.product.name: Dell DM061 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1 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 2:1.18.3-1ubuntu2.2 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1577170/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp