Now I'm on a fresh new installation of Ubuntu 12.10. I have some bad and good news.
Bad: the problem is not solved. The HSDPA Modem continues to drain a lot of power even with the 3g connection disabled. I can tune it by powertop enabling power save mode for this device. By default (in the same conditions of previous test), the Modem use about 450 mW, and overall power is about 7.35 W. Since here, nothing was changed so much from the previous release. Good: Powertop reveals a base power system of only 4.35 W, against about 6 W of the previous release of Ubuntu. Tuning the HSDPA modem, overall power drops to 7.1 W (250 mW saved, I don't know why, because 7.35 - 0.450 = 6.95 ). Moreover, I have new tuneables things in powertop: - PM runtime for device PCI Intel Corporation NM10/ICH7 Family USB2 EHCI Controller: a little save of about 20 mW - 50mW - PM runtime for device PCI Intel Corporation NM10/ICH7 Family USB UHCI Controller #4: a little save of about 10 mW - 20 mW -- 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 to Precise - Netbook Zareason Terra HD To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/875801/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
