backlight problem with the NVIDIA G96GLM [Quadro FX 770M]

Submitted by Elmar Stellnberger

Assigned to Nouveau Project

Link to original bug (#104898)

Description

There is a problem with the backlight of my FTS Celsius H265 notebook and its NVIDIA G96GLM [Quadro FX 770M] graphics card. When I leave my computer unattended for a while Xfce turns off the backlight of my computer as there is no input. However as soon as it does so my screen stays permanently black. When I move the mouse the backlight goes on again; however the screen content remains black. The same problem occurs with s2ram; after awaking from s2ram Num-Lock works well but the screen stays black. However to evoke this error it isn`t necessary to s2ram; the desktop environment just needs to switch the backlight off. - using kernel 4.15.0-rc9+.