I just installed a fresh copy oneiric amd64 on my Thinkpad X220 i5-2520M. Without the extra kernel parameter my power consumption is about 16W, w/ the parameter it is about 8W in idle state.
I do not saw the graphic errors after some hours of working and a suspend/resume cycle. Due to an older Linux kernel Sandybridge bug, I had the following line in /etc/rc.local to set a sysfs value. Maybe the value prevents the graphics from getting corrupted: echo -n 1 > /sys/module/i915/parameters/semaphores Does this help anyone w/ the bug here? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/818830 Title: [Sandy Bridge] serious power regression from kernel 3.0.0-6 to 3.0.0-7 (rc6 disabled) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/818830/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
