intel_backlight directory does not exist in ubuntu 22.04

Previously I'd been changing my laptop screen brightness by directly changing the value of /sys/class/backlight/intel_backlight/brightness; But recently I noticed that intel_backlight directory is disappeared, and I can't change the screen brightness.

There has been another directory named ideapad in backlight directory which contains files and directories listed bellow:

-r--r--r-- 1 root root 4096 Aug 10 09:57 actual_brightness
-rw-r--r-- 1 root root 4096 Aug 10 10:05 bl_power
-rw-r--r-- 1 root root 4096 Aug 10 10:05 brightness
lrwxrwxrwx 1 root root    0 Aug 10 10:05 device -> ../../../VPC2004:00
-r--r--r-- 1 root root 4096 Aug 10 09:57 max_brightness
drwxr-xr-x 2 root root    0 Aug 10 10:05 power
-r--r--r-- 1 root root 4096 Aug 10 10:05 scale
lrwxrwxrwx 1 root root    0 Aug 10 09:57 subsystem -> ../../../../../../../class/backlight
-r--r--r-- 1 root root 4096 Aug 10 09:57 type
-rw-r--r-- 1 root root 4096 Aug 10 09:57 uevent

I tried changing ideapad/brightness, but it didn't effect on screen brightness.

Now, How can I change my screen brightness, Or how can I bring intel_backlight back?

I tried many solutions suggested in other posts and forums, but none of them worked.

My ubuntu grub was updated, by running ubuntu with previous grub, the intel_backlight/brightness came back.

In my case, I had to come back to grub 5.19.0. You can find out here how to change your running grub version.