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Ubuntu 22.04 中的 Nvidia RTX 3060 - 闪烁/亮度控制不起作用

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Ubuntu 22.04 中的 Nvidia RTX 3060 - 闪烁/亮度控制不起作用

我有一台配备 Nvidia GeForce RTX 3060 Mobile 显卡的 Dell G15。刚刚安装了 ubuntu 22.04 和 Windows，但我遇到了两个主要问题：

  • 屏幕随机闪烁。
  • 亮度控制不起作用，无论是键盘还是操作系统。特别是当调高/调低亮度时，没有任何效果（亮度卡在最大）。

这是我的nvidia-smi输出：

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 515.48.07    Driver Version: 515.48.07    CUDA Version: 11.7     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  NVIDIA GeForce ...  Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   40C    P0    N/A /  N/A |      5MiB /  6144MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      1507      G   /usr/lib/xorg/Xorg                  4MiB |
+-----------------------------------------------------------------------------+

我的ubuntu-drivers devices输出

== /sys/devices/pci0000:00/0000:00:01.1/0000:01:00.0 ==
modalias : pci:v000010DEd00002560sv00001028sd00000B5Ebc03sc00i00
vendor   : NVIDIA Corporation
model    : GA106M [GeForce RTX 3060 Mobile / Max-Q]
driver   : nvidia-driver-470-server - distro non-free
driver   : nvidia-driver-510-server - distro non-free
driver   : nvidia-driver-515-server - distro non-free
driver   : nvidia-driver-510 - distro non-free
driver   : nvidia-driver-470 - distro non-free
driver   : nvidia-driver-515 - distro non-free recommended
driver   : xserver-xorg-video-nouveau - distro free builtin

输出sudo lspci -k | grep -EA3 'VGA|3D|Display'

pcilib: Error reading /sys/bus/pci/devices/0000:00:08.3/label: Operation not permitted
01:00.0 VGA compatible controller: NVIDIA Corporation GA106M [GeForce RTX 3060 Mobile / Max-Q] (rev a1)
    Subsystem: Dell GA106M [GeForce RTX 3060 Mobile / Max-Q]
    Kernel driver in use: nvidia
    Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia
--
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt (rev c8)
    Subsystem: Dell Device 0b5e
    Kernel driver in use: amdgpu
    Kernel modules: amdgpu

*已经尝试将该GRUB_CMDLINE_LINUX_DEFAULT行更改/etc/default/grub为：

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor acpi_osi=linux"

另请参阅：

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=legacy"

然后总是

sudo update-grub

但一点运气都没有。任何帮助都将不胜感激！

答案1

您有一个混合 GPU（主要）设置。显示器连接到集成的 AMD 显卡，而 Nvidia GPU 则充当 3D 处理器，您可以将繁重的 3D 任务卸载到该处理器。换句话说，尝试通过 Nvidia GPU 控制亮度是错误的方法：看看这是否有助于找到正确的 acpi_osi 字符串： https://iam.tj/prototype/enhancements/Windows-acpi_osi.html

编辑：BIOS 中也可能存在覆盖操作系统的相关控制。

Video
 LCD Brightness     
   Brightness on battery power - Sets the screen brightness when the computer is running on battery power.
   Brightness on AC power - Sets the screen brightness when the computer is running on AC power.
   EcoPower - Enables or disables EcoPower which increases the battery life by reducing the screen brightness when appropriate.
Default: ON.

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