So, the brightness value is 16x higher than max_brightness! Here, the values are: max_brightness=65520, brightness=4095, actual_brightness=65520 Its brightness control is in : /sys/class/backlight/nv_backlight On X.org driver, after bootup, the screen is nice and bright. The X.org driver seems to have a similar bug: On 520, at bootup, the grub menu is nice and bright, but the screen darkens halfway through startup. On 520, adjusting brightness does work, but at maximum brightness, the screen is very dark. On 470, the screen is nice and bright, but adjusting brightness has no effect. Max_brightness=100, brightness=100, actual_brightness=100. On 470 and 520, in /sys/class/backlight/nvidia_0/
Is there any way to make the backlight as bright as it was with the 470 driver? “xrandr -output DP-0 -brightness 1.5” helps a little, but that only adjusts color profile, not the backlight. I can adjust brightness by poking values into “/sys/class/backlight/nvidia_0/brightness”,īut even at max settings (100) the screen is very dim.
I tried using various backlight brightness utilities and config file hacks, but so far nothing works. As a workaround, I’m using an external HDMI monitor, but its frustrating that the laptop’s own display is now basically useless. I now need features from the 520 driver for my work, so I have no choice but to upgrade.
#Nvidia nview brightness drivers#
(I don’t really mind that.) However, if I upgrade to any of the newer drivers (510, 515, 520) the brightness control works, but maximum brightness is very low, maybe 20% of what I see on the 470 driver. On Ubuntu 22.04, using nvidia-driver-470, the backlight brightness is stuck at full. I have a Razer Blade Pro 17 (2017) with 4K IGZO G-Sync Sharp CRX1200 display and GTX 1080 GPU.
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