Inverted brightness scale on ubuntu with nvidia graphics

amoametan

10/9/23, 5:27 AM

I am using Ubuntu 20.04 LTS, with AMD CPU and NVIDIA GPU on my laptop. I have dual booted ubuntu along with Windows 11 and I am facing this problem. When my brightness is set to 0 (on GUI slider as well as brightnessctl), the screen brightness is maximum and vice versa. The maximum brightness is also less bright as compared to max brightness on Windows 11. I saw this question asked before (Inverted brightness button), but this does not apply to me because I am not using Intel graphics. I have set nouveau.modeset=0, acpi_brightness=vendor acpi_osi="Linux" and tried other common fixes which I could find online but they are not able to solve my problem. This is my NVIDIA graphics cards configuration.

01:00.0 VGA compatible controller: NVIDIA Corporation GA107M [GeForce RTX 3050 Mobile] (rev a1)
    DeviceName: NVIDIA Graphics Device
    Subsystem: Hewlett-Packard Company GA107M [GeForce RTX 3050 Mobile]
    Kernel driver in use: nvidia
    Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia

I had tried using other distros like Manjaro, Kubuntu and Arch Linux but I am facing the same issue in all of these distros. I am relatively new to Linux, please help me.

119

0 + 1

nvidia

graphics

brightness

drivers

Pilot6

10/9/23, 9:12 AM

This should be reported as a kernel bug by `ubuntu-bug linux`

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Inverted brightness scale on ubuntu with nvidia graphics

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.