Minimum display drightness too bright in dark conditions

[ubuntoutou]

I lower the display brightness to its minimum when in the dark but I find this minimum a bit too high. In the dark, the brightness is a bit blinding. How would it be possible to alter this minimum?

[Giiba]

I agree. But I think it is a hardware limitation, not one under a user or programmer's control.

[arubislander]

At least for the BQ M10 it is not a hardware limitation, but a choice when the image was built. Minimum brightness was set to around 10% of maximum. You can set it lower, but it is clunky, and I am not sure if the procedure is the same for each device.

[hankschwie]

Hi!

You could try another theme, like suru dark; UT Tweak Tool is your friend...

[ubuntoutou]

@hankschwie

UT Tweak Tool themes have no effect on the brightness of apps.

[Fla]

You can manually change the minimum brightness you want in /usr/share/repowerd/device-configs/ picking the file of your device. To do that, you need to mount the filesystem in write mode with sudo mount -o remount,rw /.

[ubuntoutou]

@Fla

Thanks Fla. I have edited the file config-default.xml and changed the line

 <integer name="config_screenBrightnessSettingMinimum">10</integer>

to

 <integer name="config_screenBrightnessSettingMinimum">1</integer>

and rebooted the device.

But the minimum brightness remains the same. Have I missed something? Do I need to run some kind of init command to enable the change?

[hankschwie]

@ubuntoutou
Yes, you're right. But IMHO at least the overall appearance of white text on black background is less bright then vice versa.

[ubuntoutou]

@hankschwie

White text on black background is only for the system, not for apps like the web browser.

[hankschwie]

Well, I'd say it works for most of the apps: Dekko2, Filemanager, OpenStore, UTTT, OSM Scout server, Contacts, Notes, Weather uMPD, calculator etc. etc... Even Morph has a dark frame... In others you can switch the layout - Sturm Reader, EpubViewer, Document Viewer, Writer...