[Bug 2082162] [NEW] after updating , brightness is not working

[Sindhulaya Gudapati]

*** This bug is a security vulnerability ***

Public security bug reported:

i updated my laptop after finishing the update , the brightness is not working
brightness of screen is very high and i am not able to down the screen brightness

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

** Information type changed from Private Security to Public Security

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https://bugs.launchpad.net/bugs/2082162

Title:
  after updating , brightness is not working

Status in update-manager package in Ubuntu:
  New

Bug description:
  i updated my laptop after finishing the update , the brightness is not working
  brightness of screen is very high and i am not able to down the screen brightness

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