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
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https://bugs.launchpad.net/bugs/1636033
Title:
Graphics driver setback to Gallium 0.4 on llvmpipe (LLVM 3.8, 256
bits)
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