I have a similar problem on linux 4.4.119, but not on linux 3.10.32:

smbios-lcd-brightness --value=1

has a visible effect on linux 3.10.32, but not on linux 4.4.119, though
the saved value is modified indeed.

Do you have some ideas?

python-module-smbios-2.3.3-alt1.0.g4fec2ad.noarch
libsmbios-2.3.3-alt1.0.g4fec2ad.x86_64
smbios-utils-2.3.3-alt1.0.g4fec2ad.x86_64


** Also affects: libsmbios (ALT Linux)
   Importance: Undecided
       Status: New

** Also affects: libsmbios
   Importance: Undecided
       Status: New

** Bug watch added: github.com/dell/libsmbios/issues #42
   https://github.com/dell/libsmbios/issues/42

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https://bugs.launchpad.net/bugs/331357

Title:
  dell lcd brightness strange behaviour

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