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#1 2022-03-17 21:19:33

yggdrasil673
Member
Registered: 2019-09-14
Posts: 9

backlight-controlled OLED arbitrarily going dim

Lenovo IdeaPad Slim with Ryzen 7 5800U processor and NVIDIA GeForce MX450 gpu with an OLED monitor. Problem is that whenever i do anything power-related, about 50% of the time the screen brightness gets reset to 4 (on a scale of 255).  I go to /sys/class/backlight/amd_bl1/brightness and reset the value to something in the 80-120 (depending on the ambient light). But half the time if I suspend the machine, plug in the machine, unplug the machine, or close and re-open the lid, the brightness setting reverts to 4.  Appreciate any and all suggestions!

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