Adjusting Screen brightness

[gold_finger]

I think the information in the previous post is something Gold_Finger requested.

Yes, but don't let that stop you from responding also Scott(0).

I use Linux-Lite 2.0    I have it installed twice on separate Partitions  alongside the original Win 7  and Dual Boot.

Ok - now I get it.


RE:  BOOT PROBLEM
BEFORE you started trying to fix brightness on each install, were you able to boot correctly into each one of the LL 2.0 installations?  (Trying to find out if the boot problem existed before or after your brightness fix attempts.)

When you did the NEW LL install, do you remember where you told it to put the grub bootloader?  Did you install that to the NEW LL's root partition, or the the MBR of the drive (/dev/sda)?

• If you needed to run sudo update-grub on the Old LL install to get the New LL to boot; then you installed grub to root partition on New LL.
  
• If it booted and the New LL was first on the list and immediately bootable, then grub was installed to MBR.
  

You mentioned having Grub Customizer on both LL installs.  Did the timing of boot problem coincide with installing either of those, or after trying to change something with one of them?

Solution to boot problem may vary depending on your answers to above questions.  Just to possibly get a little ahead of the game, can you post back the following command output from your working OLD LL 2.0?

Code:

lsblk
sudo blkid
grep "menuentry '" /boot/grub/grub.cfg

RE:  BRIGHTNESS FIX
I'm assuming that the output you posted is from the Old LL install where you did get brightness working -- correct?

If so, can you tell us if you ran more than one of the above fix attempts to get it working?

I can see from your cat /etc/default/grub output that solution similar to one that I ran on my machine was done.  Is that what worked for you, or did you then need to try running the Intel specific solution?

Since I don't have an Intel machine, I don't know if it is normal to see the existence of the 20-intel.conf under the /usr/share/X11/xorg.conf.d/ directory, or if that was something produced when you tried the Intel specific solution posted by Scott(0).

Basically, I'm just trying to determine which solution actually did end up working.  (Want to know for myself and for any future readers of this post.)