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linuxmint / mint20-beta

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Brightness control does not work for OLED screens #28

Closed Redsandro closed 4 years ago

Redsandro commented 4 years ago

Having to hack brightness support for laptops with an OLED screen was fair in 2018 (Mint 19) because it was new, but now it's time to support this out of the box.

Original issue posted here: https://github.com/linuxmint/cinnamon/issues/9365

 * Cinnamon version 4.6.3
 * Distribution - Mint 20 Beta
 * Intel no drivers
 * 64 bit

Issue

The brightness controls still do not work on Mint 20, although according to this thread they do work on Ubuntu 20.04

Steps to reproduce

Use Fn keys to adjust brightness

Expected behaviour

Brightness changes

Other information

The brightness OSD icon pops up but nothing changes

Thinkpad Yoga X1 OLED

xenopeek commented 4 years ago

On the thread you link to there is also comment that it doesn't work for every system with Ubuntu 20.04 LTS. I think this will still depend on particular hardware configuration.

Would you test the same booting your system from the Ubuntu 20.04 LTS LiveISO?

clefebvre commented 4 years ago

Closing for lack info. We failed to identify the cause of the issue.