SATA Aggressive Link Power Management (ALPM) - call for testing

Andy Whitcroft apw at
Wed Dec 7 11:01:40 UTC 2011

On Tue, Dec 06, 2011 at 02:59:23PM -0600, Seth Forshee wrote:
> On Tue, Dec 06, 2011 at 08:44:30PM +0000, Colin Ian King wrote:
> > And also I will be investigating the white vs black pixels setting
> > when the screen is blanked - apparently white saves power.
> Why don't we just dispense with the blanking and power off the display
> and the backlight altogether?

I think we are leary of turning the thing off as at least in the old
days there was a desire to not turn them on and off all the time,
probabally as there was a discharge tube in the mix.  Perhaps that is
true for some external monitors but likely for a panel they are LED lit


More information about the kernel-team mailing list