acertimeline team mailing list archive

[Jim <jimbojones443@xxxxxxxxx>]

Emiel, I hope this isn't a silly question, but did you still need nomodeset 
and acpi_backlight=vendor as kernel boot parameteres? 

Jim

On Thursday 26 November 2009 13:22:05 Emiel Kollof wrote:
> 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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