It doesn't work for Ubuntu 23.04 now!

[larryw3i]

My laptop is under Software Rendering, and brightnessctl doesn't work for me after I upgraded Ubuntu to Lunar Lobster. Now my laptop shows with maximal brightness value.
The information is following:

$ sudo brightnessctl -l
Available devices:
Device 'input4::capslock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input12::kana' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'phy0-led' of class 'leds':
        Current brightness: 1 (100%)
        Max brightness: 1

Device 'input12::compose' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input4::scrolllock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input12::scrolllock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input4::numlock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'input12::numlock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Device 'mmc0::' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 255

Device 'input12::capslock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

$ screenfetch 
                          ./+o+-       larry@zx0
                  yyyyy- -yyyyyy+      OS: Ubuntu 23.04 lunar
               ://+//////-yyyyyyo      Kernel: x86_64 Linux 6.1.0-16-generic
           .++ .:/++++++/-.+sss/`      Uptime: 1h 5m
         .:++o:  /++++++++/:--:/-      Packages: 10953
        o:+o+:++.`..```.-/oo+++++/     Shell: bash 5.2.15
       .:+o:+o/.          `+sssoo+/    Resolution: 1920x1080
  .++/+:+oo+o:`             /sssooo.   DE: GNOME 44.alpha
 /+++//+:`oo+o               /::--:.   WM: Mutter
 \+/+o+++`o++o               ++////.   WM Theme: 
  .++.o+++oo+:`             /dddhhh.   GTK Theme: Yaru-red-dark [GTK2/3]
       .+.o+oo:.          `oddhhhh+    Icon Theme: Yaru-red-dark
        \+.++o+o``-````.:ohdhhhhh+     Font: Ubuntu 11
         `:o+++ `ohhhhhhhhyo++os:      Disk: 109G / 234G (49%)
           .o:`.syhhhhhhh/.oo++o`      CPU: ZHAOXIN KaiXian KX-6640MA@2.2+GHz @ 4x 2.6GHz
               /osyyyyyyo++ooo+++/     GPU: llvmpipe (LLVM 15.0.6, 256 bits)
                   ````` +oo+++o\:     RAM: 3572MiB / 23520MiB
                          `oo++.      

$ sudo brightnessctl set 1% ↵
Updated device 'input4::capslock':
Device 'input4::capslock' of class 'leds':
        Current brightness: 0 (0%)
        Max brightness: 1

Hope I could get help.

Regards
larryw3i.