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Problems upgrading from 13.04 to 13.10

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http://www.kubuntuforums.net – Upon upgrading from 13.04 to 13.10, I am no longer able to change the brightness via KDE system settings or the battery monitor widget. Upon editing my /etc/default/grub to Code: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" I am able to modify brightness via keyboard controls but not via system settings or the battery monitor widget. Brightness appears to be at 100% on startup. /sys/class/backlight contains thinkpad_screen and intel_backlight. xbacklight does not change when given commands such as xbacklight -set 50. Additionally, I periodically get the er (HowTos)