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A comment on Firefox 67.0 Released. Parent comment

Re:Firefox 67.0 Released by clarry on Tuesday May 21, 2019 @12:08PM (#19971503)
> I have a low power Pentium notebook with 15" led backlit screen and the difference between a terminal with black or white background is significant.

How significant? Turn the screen black, and show the remaining battery time estimate. Turn it white, do the same. I'm curious.

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Re:Firefox 67.0 Released by iforgotpassword on Wednesday May 22, 2019 @04:08AM (#19978981)
Battery at 74%. Sitting at black screen for about a minute, the highest estimate I got was 4:50, lowest 4:05. It was mostly showing numbers close to either of these, almost never something in between.

Switching to white I got 5:40 and 4:50 showing pretty much the same behavior.

It's an HP pavilion 15-p005ng with a Pentium N3530. Terrible machine btw. Linux freezes in irregular intervals, almost immediately with OpenGL stuff...

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Re:Firefox 67.0 Released by firethief on Tuesday May 21, 2019 @02:05PM (#19972888)
Surely it isn't extrapolating from current instantaneous power consumption?
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Re:Firefox 67.0 Released by camgunz on Tuesday May 21, 2019 @06:00PM (#19975549)
I'm pretty sure that's how it works. The drivers report total battery capacity, current battery capacity, and current power draw, so the meters just do the math.
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