[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
SUMMARY: kernel 2.6.35 → 6.5 W (Maveric) kernel 2.6.38 → 8 W kernel 3.0 → 7.2 W (Oneiric, but tunable to 6.6 W) kernel 3.1 → 9W kernel 3.2 → 7.3 W (Precise, NOT tunable = REGRESSION) kernel 3.5 → 7.3 W (Qunatal, but tunable to 6.7 W) ** Summary changed: - Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD + Linux power regression is not improved from Natty to Oneiric to Precise to Quantal - Netbook Zareason Terra HD -- 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 regression is not improved from Natty to Oneiric to Precise to Quantal - 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
Device Descriptor ** Attachment added: "lsusb" https://bugs.launchpad.net/linux/+bug/875801/+attachment/3292000/+files/lsusb -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
I'm investigating the issue. Changing the /sys/bus/usb/devices/usb4/4-1/power/control from "on" to "auto", have the right effect to auto-suspend the HDSPA modem. This will save about 500 mW. More investigations revealed that in Ubuntu 12.04, this device has the maximum power usage setted to 500mW (found with the command "lsusb -v", at the line "MaxPower"). So suspending this device has less effect on power consumption compared to previous version of Ubuntu (~ 1W). This mean that there is something else that had raised its power usage. However, the changes at the file /sys/bus/usb/devices/usb4/4-1/power/control will reset at the next reboot of the netbook. 1) So, how can I make that changes be permanent? 2) If these are not permanent, this means that some other process at the boot will automatically check the devices and will sets the power properties to them. Can someone tell me which process do this control (because is obviously bugged)? If someone can help me with these questions, I can continue to investigate this issue. Thanks. -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
My powertop test were all at battery fully charged, in the same conditions (display backlight, wifi turned on, ecc.), with a record time of a few minutes (about 3-4). I hope these were enough accurate tests. If not, tell me what other test is needed. --- I used powerstat as you have suggested, this is the summary: 9.05 Watts on Average with Standard Deviation 0.63 I'm also attaching the complete results. ** Attachment added: "powerstat "precise pangoline"" https://bugs.launchpad.net/linux/+bug/875801/+attachment/3122966/+files/powerstat%20%22precise%20pangoline%22 -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
I'd like to chime in here with a few observations. 1) When gathering data from powertop one needs to ensure the sample time is long enough and also one takes a bunch of samples to ensure you are getting valid data. 2) The power consumption measurements from some batteries is tricky to estimate using tools like powertop because the battery sometimes re-calibrates the battery capacity measurements and this gives false estimations in userspace tools. 3) Twiddling all the powertop settings to GOOD settings may in fact on some hardware not actually do anything helpful, and in some cases may cause worse effects. I've measured this using a high precision multimeter and I can back this assertion with hard data. I've got a bunch of tools in my ppa which may be useful - ppa:colin- king/powermanagement do: sudo add-apt-repository ppa:colin-king/powermanagement sudo apt-get update sudo apt-get install powerstat and then run powerstat to see what kind of power consumption you get over a long period of time: sudo powerstat Powerstat will calculate average, min/max and standard deviation (the latter is useful to see how accurate+reliable your battery measurements are). Also, I recommend taking measurements when you battery is fully charged and using this as a starting point for all your testing to ensure you are starting from a known baseline. -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
** Attachment added: "powertop "precise pangoline" - devices statistics (powersave activate for globetrotter modem)" https://bugs.launchpad.net/linux/+bug/875801/+attachment/3121051/+files/powertop%20%22precise%20pangoline%22%20-%20statistiche%20dispositivi%20%28powersave%20activate%20for%20globetrotter%20modem%29 -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
** Attachment added: "powertop "precise pangoline" - tunables" https://bugs.launchpad.net/linux/+bug/875801/+attachment/3121050/+files/powertop%20%22precise%20pangoline%22%20-%20statistiche%20dispositivi -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
** Attachment added: "powertop "precise pangoline" - devices statistics" https://bugs.launchpad.net/linux/+bug/875801/+attachment/3121045/+files/powertop%20%22precise%20pangoline%22%20-%20statistiche%20dispositivi -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
** Attachment added: "powertop "precise pangoline" - overview" https://bugs.launchpad.net/linux/+bug/875801/+attachment/3121044/+files/powertop%20%22precise%20pangoline%22%20-%20riepilogo -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
Now I'm in a fresh new installation of Ubuntu 12.04. The situation has WORSENED. Now (with kernel 3.2.0-24-generic-pae #37-Ubuntu SMP Wed Apr 25 10:47:59 UTC 2012 i686 i686 i386 GNU/Linux) powertop shows a power usage of 7.50W. Up to this point, the situation is more or less the same with Oneiric (3.0 kernel). The problem is that now with Precise, enebling power save state for the usual "Dispositivo USB: Globetrotter HSDPA Modem", that drains 1.30W (like Oneiric), DOESN'T HAVE ANY EFFECT! So, enabling the power save option from powertop, it changes to "Negative" to "Positive" in the tuneables tab, the Globetrotter modem disappear from the overview tab (i.e. no power consumption from this device are detected any more), but the total system power usage remain the same, at 7.30W. So I have no more the ability to deactivate this device in any way, and the result is a DECREASE OF 1 HOUR of battery life. Moreover, enabling power save for all the devices suggested by powertop, the situation remains the same. --- There are also a few strange things in powertop overview: if you compare powertop of Oneiric with Precise, you'll see significantly increase of power consumption of: 1. "/usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none" from 21.3 mW to 176 mW. 2. "compiz" from 12.3 mW to 141 mW. 3. "conky" from 7.77 mW to 141 mW (the code is always the same). 4. [46] i915 from 553 µW to 158 mW. 5. hrtimer_wakeup from 587 µW to 80.6 mW. --- SUMMARY: 2.6.35 - 6.5 W (Maveric) 2.6.38 - 8 W 3.0 - 7.2 W (Oneiric, but tunable to 6.6 W) 3.1 - 9 W 3.2 - 7.3 W (Precise, NOT tunable = REGRESSION) Please someone take care of this issues, is very frustrating to have a netbook with 6 cells battery, with only 4h30' of autonomy. With a declared autonomy of about 7 hours ad 6 hours with a power efficient kernel/distribution. Thanks, ask me for any information/test needed. [I'm going to attach powertop overview, devices statistics, tuneables and devices statistics with powersave activate for globetrotter modem, for "Precise Pangoline"] -- 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
[Bug 875801] Re: Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD
** Summary changed: - Linux power regeression is not improved from Natty to Oneiric - Netbook Zareason Terra HD + Linux power regeression is not improved from Natty to Oneiric to Precise - Netbook Zareason Terra HD -- 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
