I don't see this issue any more running g-s-d 3.1.91-0ubuntu2. Definitely have restarted.
$ upower --dump Device: /org/freedesktop/UPower/devices/line_power_AC native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/PNP0C09:00/ACPI0003:00/power_supply/AC power supply: yes updated: Wed Sep 7 17:40:14 2011 (1 seconds ago) has history: no has statistics: no line-power online: yes Device: /org/freedesktop/UPower/devices/battery_BAT0 native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/PNP0C09:00/PNP0C0A:00/power_supply/BAT0 vendor: SANYO model: COMPATIBLE serial: 1 power supply: yes updated: Wed Sep 7 17:40:14 2011 (1 seconds ago) has history: yes has statistics: yes battery present: yes rechargeable: yes state: discharging energy: 43.47 Wh energy-empty: 0 Wh energy-full: 44.44 Wh energy-full-design: 47.52 Wh energy-rate: 20.919 W voltage: 12.255 V time to empty: 2.1 hours percentage: 97.8173% capacity: 93.5185% technology: lithium-ion History (charge): 1315413613 97.817 discharging 1315413609 97.840 discharging 1315413582 97.727 charging 1315413552 97.660 charging 1315413522 97.592 charging History (rate): 1315413613 20.919 discharging 1315413611 19.244 discharging 1315413609 0.000 discharging 1315413582 5.171 charging 1315413552 5.272 charging 1315413522 5.371 charging Daemon: daemon-version: 0.9.12 can-suspend: yes can-hibernate yes on-battery: no on-low-battery: no lid-is-closed: no lid-is-present: yes is-docked: no -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/842719 Title: Laptop screen dims even when plugged into AC power To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/842719/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs