I have done a number of additional tests. These tests include starting in recovery mode, starting with the option nomodeset and removing the process gnome-power-manager. Here are the results:
Recovery mode Blinking cursor half way down the screen - No menu or prompt appear. Pressing fn-f7 !! Still a freeze when pressing fn-f7 nomodeset + graphical mode Startup as normal Press fn+f7 !! No freeze Screen dim as intended nomodeset + recovery mode Startup as normal In the menu I chose root in prompt Press fn-f7 !! No freeze Screen dim as intended killall gnome-power-manager Pressing fn-f7 !! Still a freeze when pressing the buttons Hard reboot required -- Laptop freeze when changing brightness https://bugs.launchpad.net/bugs/619397 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
