Most likely a graphics driver is failing to load or there was some kernel change.
Please run: lspci -k > lspci.txt journalctl -b0 > journal.txt dpkg -l > packages.txt and attach the resulting text files here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to 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-settings-daemon/+bug/2082162/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
