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 Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2082162 Title: after updating , brightness is not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2082162/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs