Comment 13 for bug 1507255

Could you, please, help me with this "solution #8 ? I don't know what it is. Which is the "config file" you referrer to?Thanks.

> Date: Sun, 15 Nov 2015 20:44:34 +0000
> From: <email address hidden>
> To: <email address hidden>
> Subject: [Bug 1507255] Re: Garbled graphics in Wily with Intel GMA4500 chip
>
> Solution in #8 worked for me as well. Upgraded to 15.10 and had the
> garbled screen. The config file fixed it.
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1509196).
> https://bugs.launchpad.net/bugs/1507255
>
> Title:
> Garbled graphics in Wily with Intel GMA4500 chip
>
> Status in xserver-xorg-video-intel package in Ubuntu:
> Confirmed
>
> Bug description:
> This affects both Ubuntu GNOME and Ubuntu Wily 20151017.1. The
> graphics are so badly garbled I can only file this bug on an
> unaffected OS where I've held back the update on just that one package
> to about Beta 1 status:
>
> lance@lance-INTEL-desktop:~$ apt-cache policy xserver-xorg-video-intel
> xserver-xorg-video-intel:
> Installed: 2:2.99.917-1ubuntu1
> Candidate: 2:2.99.917+git20150808-0ubuntu4
> Version table:
> 2:2.99.917+git20150808-0ubuntu4 0
> 500 http://us.archive.ubuntu.com/ubuntu/ wily/main i386 Packages
> *** 2:2.99.917-1ubuntu1 0
> 100 /var/lib/dpkg/status
>
> I'll attach a picture of the garbled screen with the updated xserver-
> xorg-video-intel package. Oddly a screenshot taken from the affected
> OS displays perfectly OK in the unaffected OS so I used my camera.
>
> The info provided by lspci may not be very helpful:
>
> lance@lance-INTEL-desktop:~$ lspci -v -s `lspci | awk '/VGA/{print $1}'`
> 00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
> Subsystem: Intel Corporation Device 0025
> Flags: bus master, fast devsel, latency 0, IRQ 27
> Memory at d0000000 (64-bit, non-prefetchable) [size=4M]
> Memory at c0000000 (64-bit, prefetchable) [size=256M]
> I/O ports at f1c0 [size=8]
> Expansion ROM at <unassigned> [disabled]
> Capabilities: <access denied>
> Kernel driver in use: i915
>
> The tech specs show:
>
> Internal Graphics:
> • Intel ® GMA4500 onboard graphics subsystem with support for:
> ― Analog displays (VGA)
> ― Digital displays (DVI-D)
>
> I'm just using VGA ATM.
>
> Something else worth mentioning is this warning displayed while filing
> the bug report:
>
> Your system is providing 3D via software rendering rather than
> hardware rendering. This is a compatibility mode which should display
> 3D graphics properly but the performance may be very poor. If the
> problem you're reporting is related to graphics performance, your real
> question may be why X didn't use hardware acceleration for your
> system.
>
> I did try booting an earlier kernel to no avail, but holding back just
> this one update prevents the borkage.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 15.10
> Package: xserver-xorg-video-intel 2:2.99.917-1ubuntu1
> ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
> Uname: Linux 4.2.0-16-generic i686
> ApportVersion: 2.19.1-0ubuntu2
> Architecture: i386
> CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
> CompositorRunning: None
> CurrentDesktop: GNOME
> Date: Sun Oct 18 00:17:35 2015
> DistUpgraded: Fresh install
> DistroCodename: wily
> DistroVariant: ubuntu
> ExtraDebuggingInterest: Yes, if not too technical
> GraphicsCard:
> Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e42] (rev 03) (prog-if 00 [VGA controller])
> Subsystem: Intel Corporation Device [8086:0025]
> Subsystem: Intel Corporation Device [8086:0025]
> InstallationDate: Installed on 2015-08-26 (52 days ago)
> InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha i386 (20150826.1)
> ProcEnviron:
> TERM=xterm-256color
> PATH=(custom, no user)
> XDG_RUNTIME_DIR=<set>
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=39597a1e-90b6-4e81-ae29-4c01d28f7f17 ro quiet splash vt.handoff=7
> Renderer: Software
> SourcePackage: xserver-xorg-video-intel
> UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 12/23/2010
> dmi.bios.vendor: Intel Corp.
> dmi.bios.version: LDB4310H.86A.0037.2010.1223.1121
> dmi.board.asset.tag: To be filled by O.E.M.
> dmi.board.name: DB43LD
> dmi.board.vendor: Intel Corporation
> dmi.board.version: AAE60577-202
> dmi.chassis.type: 3
> dmi.modalias: dmi:bvnIntelCorp.:bvrLDB4310H.86A.0037.2010.1223.1121:bd12/23/2010:svn:pn:pvr:rvnIntelCorporation:rnDB43LD:rvrAAE60577-202:cvn:ct3:cvr:
> version.compiz: compiz 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 2:2.99.917-1ubuntu1
> version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
> xserver.bootTime: Sat Oct 17 23:58:59 2015
> xserver.configfile: default
> xserver.errors:
> AIGLX error: Calling driver entry point failed
> AIGLX: reverting to software rendering
> xserver.logfile: /var/log/Xorg.0.log
> xserver.outputs:
>
> xserver.version: 2:1.17.2-1ubuntu9
>
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