Bug 362830 - Allow lowest brightness when using the brightness down/up buttons
Summary: Allow lowest brightness when using the brightness down/up buttons
Status: RESOLVED INTENTIONAL
Alias: None
Product: Powerdevil
Classification: Plasma
Component: general (show other bugs)
Version: unspecified
Platform: Other Linux
: NOR wishlist
Target Milestone: ---
Assignee: Plasma Development Mailing List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-05-08 21:08 UTC by Pascal d'Hermilly
Modified: 2023-08-21 17:51 UTC (History)
7 users (show)

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Description Pascal d'Hermilly 2016-05-08 21:08:25 UTC
When I press brightness down button to the end it turns off the screen. ok, but the level before the screen turns off if not really low. When I click the battery widget in the systray I can pull the display brightness to a much lower brightness (and nicer for dark rooms) level.

Looking at /sys/class/backlight/intel_backlight/ the buttons sets actual_brightness to 42 before turning off the screen and in the power widget I can pull it to 1. Max_brighness is 852.

It would be really nice if the lowest level of brightness could be reached with the brightness down/up buttons.

Reproducible: Always
Comment 1 Pascal d'Hermilly 2016-08-16 20:36:43 UTC
yes/no ?
Comment 2 Sebastian Kügler 2016-08-18 10:16:41 UTC
What do you mean with yes/no? (You're not asking a question, and I don't get the context.)

The last step should not be reachable as on some hardware it switches the display off with no easy way to turn it back on. That's why it's skipped.

yes/no? :P
Comment 3 Pascal d'Hermilly 2016-08-18 12:19:53 UTC
I was just wondering if the devs saw my point :-)  (Sometimes bugs.kde.org feels lonely)

Yeah, so the problem is exactly that turning down the brightness to lowest with the keys switches off the display instead of setting the lowest level of brightness - that's not the case with the battery widget.

problem yes/no?  ;-)
Comment 4 Pascal d'Hermilly 2016-10-23 20:32:40 UTC
I'm still having the screen turning off instead of going to lowest brightness in KDE Neon 5.8.2
Comment 5 Alexander Mentyu 2018-03-16 14:49:40 UTC
Can reproduce in:

Plasma: 5.12.2
Apps: 17.12.2
Frameworks: 5.43.0
Qt: 5.10.1
Kernel: 4.14.25-1-MANJARO
OS: Netrunner Rolling
Comment 6 Thomas Surrel 2018-05-22 08:43:28 UTC
I'm going to try to implement that. My idea is that the steps when pressing the brightness buttons should not be linear. It should be tiny steps when getting close to 0 and larger steps when getting higher because when you need a bright screen in sunlight, having fine grain brightness adjustment does not make much sense whereas when you are in the dark, even small increases of brightness make a difference.
Comment 7 Thomas Surrel 2018-05-25 20:58:13 UTC
Proposed patch:
https://phabricator.kde.org/D13095
If you can, try it out and tell me what you think.
Comment 8 Nate Graham 2020-07-22 14:01:43 UTC

*** This bug has been marked as a duplicate of bug 403125 ***
Comment 9 Nate Graham 2023-08-21 17:51:03 UTC
I'm afraid this proposal has been rejected; see Bug 430439.