acertimeline team mailing list archive

[Emiel Kollof <emiel.kollof@xxxxxxxxx>]

Maybe you should update your BIOS. I upgraded to 2.31 on my 5810T and
all the backlight issues are gone with Ubuntu *and* Fedora 12.

2009/11/26 JimboJones <jimbojones443@xxxxxxxxx>:
> FWIW, I disabled all the powersaving "features" in KDE via the System
> Settings module, and killed the KDE battery monitor in task manager and just
> use gnome-power-manager.
>
> With gnome-power-manager the backlight keys work, the screen dims
> automatically, etc. Of course, I've also got the nomodeset and
> acpi_baclight=vendor as kernel boot params. I read on lesswatts.org that gpm
> is always waking the CPU, but I don't have that issue on my machine.
>
> There is some backlight flickering sometimes.
> 4810T, 1.10 BIOS, Fedora 12 beta.
>
> Jim
>
> On 11/16/2009 04:33 PM, Miguel Branco wrote:
>
> @Dan
> Thanks for the reply. I'm using Ubuntu Karmic with kubuntu-desktop installed
> on top.
> I bricked my first timeline on a BIOS downgrade so I'm not feeling too bold
> on trying an upgrade. My BIOS (for the 4810t) is 1.10.
>
> @Thomas
> Add the following to the GRUB_CMD_LINUX_DEFAULT entry in /etc/default/grub:
> nomodeset acpi_backlight=vendor
>
> and then run sudo update-grub on the terminal.
>
> This fixed it all in gnome for me and others.
>
>
>
> On Mon, Nov 16, 2009 at 23:13, Dan LeVasseur <dan@xxxxxxxxxxxxxxx> wrote:
>>
>> What version are you using?  With my 4810tz BIOS 1.3 Kubuntu 9.10 the
>> brightness keys worked out of the box and incremented levels 20 at a time.
>> Adding the nomodeset.... allowed me to change increments by 10.
>>
>> Might be BIOS that fixed it.
>>
>> -Dan
>>
>> On Mon, Nov 16, 2009 at 2:50 PM, Miguel Branco <mig.jcb@xxxxxxxxx> wrote:
>>>
>>> Hello there,
>>> I'm happy with my 4810T so far, I have no noise at all and almost
>>> everything works.
>>> However, while the 'nomodeset acpi_backlight=...' fix for the backlight
>>> is perfect in Gnome, it doesn't work at all in KDE.
>>>
>>> The script fix works, but it's unpractical to input the password each
>>> time you want to change the brightness.
>>> I'm not even mentioning that you lose the option of using the built in
>>> sliders.
>>>
>>> Does anyone know another option or hybrid way that works on KDE? I'd even
>>> be happy if I could say setpci doesn't need sudo.
>>>
>>> Thanks,
>>> Miguel
>>>
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>>
>
>
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