Public bug reported: I've been experiencing brightness control issues and I ended up "upgrading" my graphics driver through Intel Graphics Update Tool for Linux https://01.org/linuxgraphics. Running their application setback my graphics driver (previously Intel Ivybridge) to Gallium 0.4 on llvmpipe (LLVM 3.8, 256 bits). I've tried several solutions I found on askubuntu and other forums, but nothing seems to work. Fortunately I stumbled upon your xdiagnose tool and tried running it. It seems my system is not using hardware acceleration. I'll be happy to share any additional information you might need for solving this. I'm including some of my commands from bash_history in a file. I'm running Ubuntu LTS 16.04. Output to $ apt-cache policy xorg: xorg: Installed: 1:7.7+13ubuntu3 Candidate: 1:7.7+13ubuntu3 Version table: *** 1:7.7+13ubuntu3 500 500 http://pt.archive.ubuntu.com/ubuntu xenial/main amd64 Packages 100 /var/lib/dpkg/status Thank you.
ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21 Uname: Linux 4.4.0-45-generic x86_64 .tmp.unity_support_test.1: 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 Date: Mon Oct 24 00:14:22 2016 DistUpgraded: 2016-10-21 01:04:16,317 DEBUG icon theme changed, re-reading DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: i915-4.6.3-4.4.0, 1, 4.4.0-45-generic, x86_64: installed ExtraDebuggingInterest: Yes 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:c0e1] InstallationDate: Installed on 2016-02-18 (248 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: SAMSUNG ELECTRONICS CO., LTD. 700T1C ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-45-generic.efi.signed root=UUID=ad1c3829-15ce-4772-9c8f-e82456a320c8 ro quiet splash video.use_native_backlight=1 vt.handoff=7 init=/sbin/upstart Renderer: Software SourcePackage: xorg UpgradeStatus: Upgraded to xenial on 2016-10-21 (2 days ago) XorgConf: Section "Device" Identifier "Card0" Driver "intel" Option "AccelMethod" "sna" EndSection dmi.bios.date: 02/15/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P10AAT.050.140215.dg dmi.board.asset.tag: No Asset Tag dmi.board.name: XE700T1C-K01PT dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: SEC_SW_REVISION_1234567890ABCD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 8 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP10AAT.050.140215.dg:bd02/15/2014:svnSAMSUNGELECTRONICSCO.,LTD.:pn700T1C:pvrP10AAT:rvnSAMSUNGELECTRONICSCO.,LTD.:rnXE700T1C-K01PT:rvrSEC_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct8:cvrN/A: dmi.product.name: 700T1C dmi.product.version: P10AAT dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.68-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.2-0intel1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.2-0intel1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.1 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+git20160325-1ubuntu1.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sun Oct 23 23:59:15 2016 xserver.configfile: /etc/X11/xorg.conf xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.18.4-0ubuntu0.1 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 third-party-packages ubuntu xenial ** Attachment added: "Commands I tried to solve the problem." https://bugs.launchpad.net/bugs/1636033/+attachment/4766047/+files/bash_history1.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1636033 Title: Graphics driver setback to Gallium 0.4 on llvmpipe (LLVM 3.8, 256 bits) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1636033/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs