[Wake from sleep] (KUbuntu 22.4 LTS) Laptop brightness frequently goes to max.

[keybounce]

Component

Dasharo firmware

Device

NovaCustom NS7x 12th Gen

Dasharo version

Unknown

Dasharo Tools Suite version

unknown

Test case ID

No response

Brief summary

On wake from sleep, the laptop monitor goes to full bright

How reproducible

Approximate reproducibility 50%.

How to reproduce

Let the machine go to sleep. Then wake it up.

Expected behavior

The same monitor brightness maintained.

Actual behavior

One of the following two: 1, full bright for a moment, and then back to what I had. 2, Full bright, and stays there.

Screenshots

No response

Additional context

NB: ** I do not know if this is a Linux bug, or a firmware bug** If I manually do "bright up one level, bright down one level" on the keyboard, then it goes to the proper brightness (actually as soon as I hit "bright up one level"). So, if I have a 5% light level, it will go from "full bright" to "11%", and indicate this properly.

Reason for suspecting it might be Dasharo: Power management is supposed to be the function of EFI. Reason for suspecting it might be Linux/X: When I do hit "bright up", the proper level is displayed on the on-screen display, and it goes to the right level. As much as this implies that the system knows what it should be, it also implies that it isn't the EFI so much as the commands being given to the EFI.

Solutions you've tried

No response