backlight utility?

[Dave Stevens]

On Thu, 23 Jul 2015 22:12:54 -0500
Noah Duffy <noahduffy at fastmail.fm> wrote:

> On Thu, Jul 23, 2015, at 09:42 PM, Dave Stevens wrote:
> > I've got a samsung n220 netbook into which I recently installed a
> > ssd. I took advantage of the install to do a clean fresh install of
> > U14.04. It went well except that I can no longer adjust my
> > backlight. The function keys that used to do this appear to work -
> > I get a little slider display on-screen - but there isn't any
> > actual difference in screen brightness. Anyone have an idea about
> > this one? I tried the software centre under acpi and backlight but
> > the hits don't seem relevant.
> > 
> > Dave
> 
> I had the same issue on my laptop and was able to solve it by adding
> acpi_backlight=vendor to /etc/default/grub.
> 
> After you make the edit, it should look something like this:
> GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor quiet"
> 
> After you make the change, you'll need to update grub:
> sudo apt-get update-grub
> 
> Try it out and see if it works (you'll have to reboot).

Thanks, I'll try it and let you know.

D

> 



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