I couldn't manage to post three attachments in one comment. So here comes the output before suspend.
** Attachment added: "brightness_test-before_suspend.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/935778/+attachment/2971343/+files/brightness_test-before_suspend.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/935778 Title: Toshiba R840 - brightness controls work on first boot, but do nothing after suspend/resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/935778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs