Disabling the HDSPA modem by Powertop, i.e. activating auto-suspending for the device (actually the only way), reduces the power consumption to 6.6W and increase the battery life up to 5h30'. Like in Maverick with 2.6.35 kernel. So I think that the management for that device in my case is the biggest problem in kernel 3.0 and higher.
Moreover, I see more other tunables stuff in Powertop. For example, enabling the energy management for the SATA connection, reduces even more the power consumption, to about 5.9W, and increasing battery life to about 5h50'. Totally, I can do 17 tunings in Powertop! (in Linux 3.0) I'm not an expert or a kernel programmer, but I think that the latest version of kernel have a great regression in the device energy management. Most of that device have a little power usage, but a few have a great power consumption, even if it is not necessary. At least in my case. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/875801 Title: Linux power regeression is not improved from Natty to Oneiric - Netbook Zareason Terra HD To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/875801/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
