linuxmint / linuxmint/cinnamon

Dimming the screen actually turns it off

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BUG
Dominant language
JavaScript
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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Description

 * Cinnamon 3.6.6
 * Arch
 * Dell XPS 15 9550 (Intel HD Graphics 530 / NVidia GTX 960M)
 * 64 bit

Issue
When dimming the screen brightness to minimum, the screen is actually turned off.

Steps to reproduce
Use keyword brightness dim key to reach minimum brightness.

Expected behaviour
Brightness should be very dimmed but backlight should not be completely off.

Other information
I get the same result with the following command:

echo "0" | sudo tee /sys/class/backlight/intel_backlight/brightness

though I think it's expected. I tried dimming the screen on Ubuntu (Unity) using the keyboard key and the minimum value that got written in the file was 1. Is there something to do to get the same behavior on Cinnamon?

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the issue with the brightness key and the reported /sys/class/backlight/intel_backlight/brightness command on Cinnamon 3.6.6. Trace the brightness handling from the keyboard action and compare the minimum value written with the expected minimum of 1 rather than 0. Done means the screen remains dimly lit at the minimum setting.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, linux
Domain
desktop, operating-systems
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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