Thread: Kindle PW4 Minimum Brightness
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Old 12-13-2020, 03:50 PM   #6
j.p.s
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Posts: 5,806
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Join Date: Apr 2011
Device: pb360
Quote:
Originally Posted by dnmmx View Post
Hi J.p.s.
Here's the screenshot for you from PW4

https://ibb.co/6vWKL4F

By the way the extension or settings up the value doesn't change the brightness. Any help regarding this would be appreciated.

Btw, change in actual_brightness also doesn't make any changes.
The extension can't work on a PW4 because the contents of /sys/class/backlight/ are different, that is why I asked, because I do not have a PW4. Also, please use text instead of a photograph or at least use a screenshot. You can use the "screenshot" command in the terminal or tap 2 diagonal corners of the display.

When you did the echo > 1 command, did the screen get dim?

If not, there is nothing you can do.

If it does get dim, you can change all instances of max77696-bl in the script to bl.

/sys/class/backlight/actual_brightness is readonly. You can't change it.

You can save text output from a command like this:

ls -l /sys/class/backlight/ >> /mnt/us/command_out.txt

Then you can copy command_out.txt to your PC.
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