Minor correction... Both Scenarios allow the discreet/radeon card to render as expected however there is a different problem which is visible when you run for example..
DRI_PRIME=1 chromium_browser & The window doesn't render unless you resize it couple of times and then the application becomes visible and user responsive. Also right clicking within the browser window gives empty rectangular. The chrome://flags have both H/W acceleration and rasterisation to true -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1581270 Title: Hybrid Graphics: [drm:si_resume [radeon]] *ERROR* si startup failed on resume Status in xorg package in Ubuntu: Confirmed Bug description: dmesg shows issues with being able to use the discrete graphics card (relevant dmesg lines attached). Grub does pass "radeon.modeset=1" but it doesn't seem to make a difference. If I pass both "radeon.modeset=1" and "radeon.startpm=1"to the kernel, then it does not error (except for the VCE error -110, which is probably harmless). Running `DRI_PRIME=1 glxgears`: - with "radeon.modeset=1" and "radeon.startpm=1", no error but only a black window with a visible top bar. - with just "radeon.modeset=1", error (attached as 'glxgears'). Results are similar on Ubuntu GNOME 16.04, except with "radeon.modeset=1" and "radeon.startpm=1" set. It works, but lots of screen tearing. Attached are relevant dmesg lines, grep'd with 'drm'. I'll also be attaching entire contents of dmesg, /var/log/syslog, etc., but TLDR: [ 22.916285] [drm] ring test on 0 succeeded in 2 usecs [ 22.916289] [drm] ring test on 1 succeeded in 1 usecs [ 22.916292] [drm] ring test on 2 succeeded in 1 usecs [ 22.916299] [drm] ring test on 3 succeeded in 3 usecs [ 22.916304] [drm] ring test on 4 succeeded in 3 usecs [ 23.092271] [drm] ring test on 5 succeeded in 2 usecs [ 23.092276] [drm] UVD initialized successfully. [ 23.092311] [drm] ib test on ring 0 succeeded in 0 usecs [ 23.092349] [drm] ib test on ring 1 succeeded in 0 usecs [ 23.092375] [drm] ib test on ring 2 succeeded in 0 usecs [ 23.092392] [drm] ib test on ring 3 succeeded in 0 usecs [ 23.092407] [drm] ib test on ring 4 succeeded in 0 usecs [ 33.241928] [drm:uvd_v1_0_ib_test [radeon]] *ERROR* radeon: fence wait failed (-35). [ 33.241948] [drm:radeon_ib_ring_tests [radeon]] *ERROR* radeon: failed testing IB on ring 5 (-35). lsb_release -rd: Description: Ubuntu 16.04 LTS Release: 16.04 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-22.39-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 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: Thu May 12 20:43:03 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Samsung Electronics Co Ltd 3rd Gen Core processor Graphics Controller [144d:c0e6] Subsystem: Samsung Electronics Co Ltd Mars [Radeon HD 8670A/8670M/8750M] [144d:c0e6] InstallationDate: Installed on 2016-05-13 (0 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: SAMSUNG ELECTRONICS CO., LTD. 870Z5E/880Z5E/680Z5E ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed root=UUID=644ba363-51c7-419c-8544-2ff7be960f21 ro quiet splash radeon.modeset=1 vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/21/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P05ADH.017.140421.SH dmi.board.asset.tag: No Asset Tag dmi.board.name: NP680Z5E-X01US dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: SEC_SW_REVISION_1234567890ABCD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP05ADH.017.140421.SH:bd04/21/2014:svnSAMSUNGELECTRONICSCO.,LTD.:pn870Z5E/880Z5E/680Z5E:pvrP05ADH:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP680Z5E-X01US:rvrSEC_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: 870Z5E/880Z5E/680Z5E dmi.product.version: P05ADH dmi.sys.vendor: SAMSUNG ELECTRONICS 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: Thu May 12 20:35:57 2016 xserver.configfile: default xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension. xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 4845 vendor AUO xserver.version: 2:1.18.3-1ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1581270/+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
