Dark or darker display
quozl at laptop.org
Mon Apr 25 00:57:46 EDT 2016
On Sun, Apr 24, 2016 at 05:53:19PM -0700, Hal Murray wrote:
> quozl at laptop.org said:
> > The XO-4 display has a much brighter backlight. It proved
> > impossible to find such dark LEDs as used to exist.
I was hasty. Let me restate that. Some XO-1.75 and many XO-4,
especially those produced last year and onwards, have a different
Look at the BL manufacturing tag in the firmware SPI Flash to figure
out if you have the new backlight source.
https://dev.laptop.org/ticket/12854 has technical details.
> Do they take more power or are they more efficient?
Probably yes to both, but I've not tested.
(i.e. more power, more efficient, more lumens overall, more lumens per watt).
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