未检测到第二个监视器,亮度不起作用…使用Nvidia(GTX 1660ti)和Ubuntu 20.04(内核5.4.0)

我刚刚购买了一台新的华硕笔记本电脑(Ryzen 7 4800h,Nvidia GTX 1660ti),而Linux遇到了一些图形问题。到目前为止,正如标题中所述,问题是第二个屏幕没有被检测到(HDMI),并且亮度控制根本不起作用(这使我的眼睛大笑)。

我尝试使用nvidia-440和nvidia-435驱动程序,但没有运气。至少,与我也曾尝试过的Linux Mint相反,Ubuntu似乎并没有给CPU带来沉重的负担。

我拥有所有最新信息,并且还使用了自动安装命令:

sudo apt-get update && sudo apt-get upgrade -y
sudo ubuntu-drivers autoinstall

This is the output of inxi -G:

Graphics:  Device-1: NVIDIA TU116M [GeForce GTX 1660 Ti Mobile] driver: nvidia v: 435.21 
           Device-2: Advanced Micro Devices [AMD/ATI] Renoir driver: N/A 
           Display: x11 server: X.Org 1.20.8 driver: ati,fbdev unloaded: modesetting,nouveau,nvidia,radeon,vesa 
           resolution: 1920x1080~77Hz 
           OpenGL: renderer: llvmpipe (LLVM 9.0.1 128 bits) v: 3.3 Mesa 20.0.4 

(它显示了nvidia-435驱动程序,因为这是我的最后一次尝试,但是如前所述,它在440上也不起作用)。

同样,“ Nvidia X服务器设置”面板只是空白,带有“帮助”和“退出”按钮。单击帮助仅表示没有帮助:

enter image description here

I also leave the output of lshw -c video just in case it's useful:

  *-display                 
       description: VGA compatible controller
       product: TU116M [GeForce GTX 1660 Ti Mobile]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:68 memory:fb000000-fbffffff memory:b0000000-bfffffff memory:c0000000-c1ffffff ioport:f000(size=128) memory:fc000000-fc07ffff
  *-display UNCLAIMED
       description: VGA compatible controller
       product: Renoir
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:05:00.0
       version: c6
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:d0000000-dfffffff memory:e0000000-e01fffff ioport:c000(size=256) memory:fc500000-fc57ffff

And also the output of lspci | grep -A 1 -i vga:

01:00.0 VGA compatible controller: NVIDIA Corporation TU116M [GeForce GTX 1660 Ti Mobile] (rev a1)
01:00.1 Audio device: NVIDIA Corporation TU116 High Definition Audio Controller (rev a1)
--
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Renoir (rev c6)
05:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1637

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