Your GPU is extremely unhappy. The fallback to vesa is because it fails
even to initialise its command rings, and it looks like it falls over
regularly even if it manages to get past that.
I would strongly advise you looks for a BIOS update, and please try a
very recent kernel. I would also recommend drm-intel-experimental (from
the kernel mainline ppa) as our detection of broken firmware has
improved along with our tolerance.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/980058
Title:
Sometimes see vertical bands, artifacts across screen after boot
Status in The Plymouth splash screen:
New
Status in “xserver-xorg-video-intel” package in Ubuntu:
Incomplete
Bug description:
Since updating from 12.04 Beta 1 to 12.04 (Final) (I went from 11.10
to 12.04 Beta 1 before that via a clean install), while booting, GRUB
is displayed fine, and Ubuntu begins to boot fine. It's only when
Plymouth is displayed (which happens fairly late into boot for me)
that I start to experience problems.
Most of the time, Plymouth is shown fine, and everything is great.
However, occasionally Plymouth is shown garbled, there's little blobs
of colour (Sorry I can't provide much information because Plymouth is
only shown for a little while during my boot).
Then I see vertical bands of colour, it kind of looks like my display
has been stretched vertically and the whole display is 1px tall. (I
have posted some videos showing the behaviour below).
I can log in, log out, switch to TTY's - do whatever, but the screen
still has vertical bands on it. Moving the mouse causes the bands to
change/update.
Switching to any TTY shows a blinking vertical line, which moves along
as I type commands, but it's impossible to see them (you can just see
the blinking cursor)
I can SSH into the computer and collect any logs if they are needed.
I then force shut-down the laptop and restart and everything works
fine.
The only kernel command I have added is acpi_backlight=vendor (to be
able to set the backlight brightness)
lsb_release -rd
===========
Description: Ubuntu 12.04 LTS
Release: 12.04
apt-cache policy xorg and apt-cache policy xserver-xorg-video-intel
==========================================================================
xorg:
Installed: 1:7.6+12ubuntu1
Candidate: 1:7.6+12ubuntu1
Version table:
*** 1:7.6+12ubuntu1 0
500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
100 /var/lib/dpkg/status
xserver-xorg-video-intel:
Installed: 2:2.17.0-1ubuntu4
Candidate: 2:2.17.0-1ubuntu4
Version table:
*** 2:2.17.0-1ubuntu4 0
500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
100 /var/lib/dpkg/status
Below here is information from the original bug report (Before I
upgraded from 12.04 Beta 1 to 12.04 (Final)).
=========================
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: wl
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu1
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: None
Date: Thu Apr 12 17:15:47 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
bcmwl, 5.100.82.38+bdcom, 3.2.0-17-generic, x86_64: installed
bcmwl, 5.100.82.38+bdcom, 3.2.0-21-generic, x86_64: installed
bcmwl, 5.100.82.38+bdcom, 3.2.0-22-generic, x86_64: installed
bcmwl, 5.100.82.38+bdcom, 3.2.0-23-generic, x86_64: installed
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device [1025:0504]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 1bcf:288a Sunplus Innovation Technology Inc.
MachineType: Acer Aspire 5750
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic
root=UUID=294c451d-e2ed-4cfd-bbfe-9c443dd1a944 ro quiet splash
acpi_backlight=vendor vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/24/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.11
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JE50_HR
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.11
dmi.modalias:
dmi:bvnAcer:bvrV1.11:bd05/24/2011:svnAcer:pnAspire5750:pvrV1.11:rvnAcer:rnJE50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.11:
dmi.product.name: Aspire 5750
dmi.product.version: V1.11
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.7.4-0ubuntu3
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20111201+b5534a1-1build2
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