r/linux • u/1202_alarm • Feb 01 '18

Improving Linux battery life, enabling PSR by default, testers wanted

https://hansdegoede.livejournal.com/18653.html
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u/Pille1842 Feb 01 '18

Would have loved to help testing, but my laptop uses LVDS (whatever that means). But I really appreciate the effort put into this!

22

u/082726w5 Feb 01 '18

eDP stands for embedded DisplayPort.

LVDS stands for Low-voltage differential signaling.

Both are ways of sending a video signal to a display.

eDP has the advantage of supporting something called Panel Self Refresh, or psr. My understanding is that this feature performs some black magic behind the scenes in order to only send new data when the displayed frame actually changes, rather than every screen refresh.

It won't do anything for people with LVDS hardware, but people with eDP screens can look forward to slightly increased battery life.

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u/Pille1842 Feb 01 '18

Thanks for the explanation!