Bug#787279: d-i screen blanking (more info)
On 11 May 2016 at 20:51, Ben Hutchings <ben@decadent.org.uk> wrote:
> On Wed, 2016-05-11 at 23:16 +0200, Philipp Kern wrote:
>> I also like the dimming idea. It sounds to me like there could be some
>> filter be applied to the output of X...
>
> xrandr --brightness
>
> But it is implemented in individual drivers by setting hardware gamma
> correction, and the generic fbdev driver we use in the installer
> doesn't support that.
That seems like it would help prevent burn-in on CRTs. It kinda of
looks like the hardware is failing when the gamma is wrong ;-)
What I like about xbacklight (for laptops, if supported in firmware or
with ACPI tricks, or another method for quirky hardware) and
DDCcontrol is that they actually dim the backlight or power down the
ray gun.
Cheers,
Nicholas
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