Backlight Adjusting doesn't work for linux-image-6.1.0-16-generic.

[Larry Wei]

Backlight Adjusting doesn't work for linux-image-6.1.0-16-generic.

My laptop is under `Software Rendering`(GPU: llvmpipe (LLVM 15.0.7, 256 bits)), after I upgraded Ubuntu 22.10 to 23.04, the brightness adjusting is unavailable and my monitor is much bright. However I change the Kernel to `linux-image-5.19.0-35-generic`, the backlight adjusting works normally,

The `lshw display` information:
$ sudo lshw -c display
  *-display UNCLAIMED
       description: VGA compatible controller
       product: ZX-E C-960 GPU
       vendor: Zhaoxin
       physical id: 1
       bus info: pci@0000:00:01.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:c0100000-c017ffff memory:a0000000-bfffffff memory:c0000-dffff
  *-graphics
       product: EFI VGA
       physical id: 2
       logical name: /dev/fb0
       capabilities: fb
       configuration: depth=32 resolution=1920,1080

Hope I can get some help.

Regards，
larryw3i