I've noticed that as well — although I stopped using the nomodeset option
because it would prevent Ubuntu from being able to give me a console size
and font suitable to the 1366x768 display on my Acer (170x45) and instead
force an ugly 80x24 console.  (By "console" I mean the ASCII command line
tty environment you drop in to when you hit "Ctrl-Alt-Fn" (n = 1..6) from
inside X.

-chris

On Sat, Apr 24, 2010 at 1:03 PM, Aris Ioannidis <email address hidden>wrote:

> I am running ubuntu 10.04 RC.
>
> When I was in BIOS v1.10 the "nomodeset acpi_backlight=vendor" parameter
> would fix the problem.
>
> Now I upgraded to BIOS v2.31 and I have all these issues. Can we get a
> changelog on the BIOS?
>
> --
> [gm45] Adjusting Brightness in Acer Aspire Timelines causes system freeze
> in 4810T and 5810T models
> https://bugs.launchpad.net/bugs/446717
> You received this bug notification because you are a direct subscriber
> of a duplicate bug.
>
> Status in “xserver-xorg-video-intel” package in Ubuntu: Incomplete
>
> Bug description:
> Binary package hint: compiz
>
> Ubuntu 9.10 Beta, Acer 4810tz "Timeline" series BIOS 1.28
>
> When Appearance -> Visual Effects are set to "none" brighness keys act as
> expected with small screen glitches at the bottom of the panel.
>
> With Appearance -> Visual Effects set to either "Normal" or "Advanced"
> changing brightness via the keys causes system to become unresponsive.
>  Mouse does not move, keyboard does not work EXCEPT the ability to continue
> changing the brightness.  Only way out is hard power off (or restart via
> sysreq).
>
> I have attempted to enable visual effects and disable all plugins via CCSM
> with no luck.
>
> Description:    Ubuntu karmic (development branch)
> Release:        9.10
>
> compiz:
>  Installed: 1:0.8.3+git20091005-0ubuntu5
>  Candidate: 1:0.8.3+git20091005-0ubuntu5
>  Version table:
>  *** 1:0.8.3+git20091005-0ubuntu5 0
>        500 http://us.archive.ubuntu.com karmic/main Packages
>        100 /var/lib/dpkg/status
>
> ProblemType: Bug
> Architecture: i386
> CompizPlugins:
> [core,move,resize,place,decoration,animation,ccp,dbus,mousepoll,gnomecompat,png,svg,imgjpeg,text,commands,neg,video,wall,snap,scale,scaleaddon,expo,staticswitcher,regex,resizeinfo,workarounds,ezoom,vpswitch,extrawm,fade,session,shift,wobbly]
> Date: Thu Oct  8 16:13:02 2009
> DistroRelease: Ubuntu 9.10
> MachineType: Acer Aspire 4810T
> Package: compiz 1:0.8.3+git20091005-0ubuntu5
> PackageArchitecture: all
> PciDisplay: 00:02.0 VGA compatible controller [0300]: Intel Corporation
> Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
> ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-12-generic
> root=UUID=33fe58ed-1c9d-4bb1-8ae3-e148af49bd93 ro quiet splash
> ProcEnviron:
>  LANG=en_US.UTF-8
>  SHELL=/bin/bash
> ProcVersionSignature: Ubuntu 2.6.31-12.39-generic
> RelatedPackageVersions:
>  xserver-xorg 1:7.4+3ubuntu5
>  libgl1-mesa-glx 7.6.0~git20090817.7c422387-0ubuntu7
>  libdrm2 2.4.13-1ubuntu1
>  xserver-xorg-video-intel 2:2.8.1-1ubuntu2
>  xserver-xorg-video-ati 1:6.12.99+git20090825.fc74e119-0ubuntu2
> SourcePackage: compiz
> Uname: Linux 2.6.31-12-generic i686
> XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
> dmi.bios.date: 08/17/2009
> dmi.bios.vendor: INSYDE
> dmi.bios.version: V1.28.
> dmi.board.asset.tag: Base Board Asset Tag
> dmi.board.name: Aspire 4810T
> dmi.board.vendor: Acer
> dmi.board.version: Base Board Version
> dmi.chassis.type: 1
> dmi.chassis.vendor: Chassis Manufacturer
> dmi.chassis.version: Chassis Version
> dmi.modalias:
> dmi:bvnINSYDE:bvrV1.28.:bd08/17/2009:svnAcer:pnAspire4810T:pvrV1.28.:rvnAcer:rnAspire4810T:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion:
> dmi.product.name: Aspire 4810T
> dmi.product.version: V1.28.
> dmi.sys.vendor: Acer
> system: distro = Ubuntu, architecture = i686, kernel = 2.6.31-12-generic
>
> To unsubscribe from this bug, go to:
>
> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/446717/+subscribe
>