Ubuntu 17.10 with kernel 4.16-rc1, radeon.mst=1, extended display in GUI. The screens chained by MST DisplayPort are seen properly as separate screens. Build screen is seen in the GUI and although enabled there, remains blank. Periodically (~5s) screens become blank for ~1s.
** Attachment added: "journal_mst.log" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1509997/+attachment/5054162/+files/journal_mst.log -- 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/1509997 Title: 1002:6821 Graphical issues when radeon MST enabled Status in xserver-xorg-driver-ati: Confirmed Status in xserver-xorg-video-ati package in Ubuntu: Confirmed Bug description: The kernel was launched with the options: radeon.mst=1 radeon.dpm=1 (however, I noticed identical symptoms for radeon.mst enabled only) The setup in total includes 3 screens: laptop's one + 2 times Dell U2715H (connected by Display Port daisy chain) I get Ubuntu login GUI on two Dell screens, laptop's screens got off. The Dell screens are properly detected as separate: I can move mouse from one screen to another. Image on the last Dell screen is defected (blur) as in the attached picture. After login all screens switch to power safe mode. Afterwards, I'm able to switch to CLI (ALT+CTRL+F2) but screens is doubled on two Dells (they are treated as one), laptop's screen remains off. WORKAROUND: Use fglrx (tested with fglrx-installer-updates 2:15.201-0ubuntu2~15.10.2) ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xserver-xorg-video-radeon 1:7.5.0+git20150819-0ubuntu1 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 NonfreeKernelModules: openafs ApportVersion: 2.19.1-0ubuntu3 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' Date: Mon Oct 26 09:29:05 2015 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu DkmsStatus: openafs, 1.6.14, 4.2.0-16-generic, x86_64: installed vboxhost, 5.0.8, 4.2.0-16-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Venus XT [Radeon HD 8870M / R9 M270X/M370X] [1002:6821] (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device [103c:2254] InstallationDate: Installed on 2015-04-02 (206 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: Hewlett-Packard HP ZBook 15 G2 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-16-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro radeon.dpm=1 radeon.mst=1 SourcePackage: xserver-xorg-video-ati UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/23/2015 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: M70 Ver. 01.12 dmi.board.name: 2253 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 03.10 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrM70Ver.01.07:bd02/26/2015:svnHewlett-Packard:pnHPZBook15G2:pvrA3008CD10003:rvnHewlett-Packard:rn2253:rvrKBCVersion03.10:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP ZBook 15 G2 dmi.product.version: A3008CD10003 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Mon Oct 26 09:25:26 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.17.2-1ubuntu9 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/1509997/+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
