This is certainly not update-manager, maybe not gnome-shell either, but in any case there is too little information in the bug report. We need at least your hardware (lspci), the release you were using, the release you are on now (lsb_release -c).
** Information type changed from Public Security to Public ** Changed in: update-manager (Ubuntu) Status: New => Invalid ** Also affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2082162 Title: after updating , brightness is not working Status in gnome-shell package in Ubuntu: Incomplete Status in update-manager package in Ubuntu: Invalid 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2082162/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp