Measurements: Massive Display-related power savings

Cédric Berger cedric.berger74 at
Thu Oct 9 12:10:16 CEST 2008

On Wed, Oct 8, 2008 at 20:43, Harald Welte <laforge at> wrote:
> FSO image, screen backlight full on, CPU idle           177mA
> same using frameworkd/sysfs based screen blank           99mA
> same using manual "sleep" into jbt sysfs file            83mA
> same using manual "deep-standby" into jbt                82mA
> same plus disabling glamo DCLK pixel clock               59mA>

> The measurements should apply to both ASU and FSO, since both just used
> backlight based blanking so far.  ASU will directly benefit since it uses
> the x screen blanking.

What about QtExtended (framebuffer) ? how does it blank the screen ?

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