Comment 142 for bug 760131

Revision history for this message
Matthew Hessel (matt-hessel) wrote : Re: [Bug 760131] Re: Power consumption raised significantly in natty

well, I woudn't say negativist, but..

I think the power issue is a bit overblown. even in the inital bug report
for this, Natty was like 15 percent more power hungry than the older
versions. And - this is not unique to Natty, or Ubuntu..

if you look around there are bug reports for this exact bug on Fedora,
Debian, I think I even saw this in Gentoo and Arch as well. Most of the
effort I see Ubuntu developers working on are usability and GUI
improvements, and don't discount the work they do to enhance the stock
debian packages to make Ubuntu as stable as possible.

the Power utilization is higher, true, newer kernels do not have as much of
a problem, and there is the option to force the pcie_aspm to work like it
used to, so there is no functionality lost. It is a bit of a cludge, but
you should expect that when running the latest and more bleeding edge stuff.

Before you start assuming that there is a major disconnect with the guys at
ubuntu though, try out the latest Fedora.. notice anything?

Power issues are the same, and they have this fancy new GUI also, only it is
Gnome 3.0 - I'm not saying either one is better, but there are more
similarities than differences that I have found. But lately Gnome has
ticked me off too much - you have LESS options to customize and tune than
Unity or others. I used fedora for maybe a week, reinstalled Natty and have
been happy since.

If you don't like either one, and want something more flexible or whatever,
try the alternatives. KDE is looking really good these days, might be the
prettiest GUI I have ever seen, and now it really seems usable, how funny
that a year ago, everyone was preaching doom and gloom on the changes from
KDE old to KDE new.

I will also say that Ubuntu is one of the more stable and easy to use
distros out there, they don't take away my insatiable desire to tinker with
the guts of it. And I don't see any other OS that is as easy to add other
devices to now. Windows is a pain in the @#$@ to get some new device on
there, what with the installers that HP wants you to use so you can't just
install the damn thing, - I have to also add your bloated replacement for
stuff that windows can already do, and other issues..

Macs might "just work," but only if you use their stuff.. A PC would just
work too if I only had maybe 20 or so things I could plug into it..

anyway I have veered way off the subject.. hope I don't sound too
trollish..

On Mon, Jul 18, 2011 at 7:01 PM, florin <email address hidden> wrote:

> I base my opinion on +cjcolella's note:
>
> I do think that not considering battery life as a priority will make
> Linux unusable in the near future. Why? Just have a look at Ubuntu's
> interface and one of Ubuntu's major decisions: it dropped Gnome and made
> a whole new interface, Unity, that has one of the main objectives to
> make it EASY TO USE on touchscreens.
>
>
> But most touch screens are on phones, tablets, notebooks, netbooks, and
> other mobile devices. I think nowadays, mobile devices are the most
> succesful on any markets and I think Ubuntu had a good idea to address the
> mobile users; but it's important to make the OS work at least as well as
> other OS's.
>
>
> Why would I use Ubuntu/any other Linux (as it is a kernel "feature" aka
> bug) if my cool device can't be used with it?
>
>
> Call me negativist, but this is a any-linux-distro-killer issue and
> should be shared with other distributions and insist at kernel
> developers. This needs a solution ASAP, before users start looking
> elsewhere.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/760131
>
> Title:
> Power consumption raised significantly in natty
>
> Status in Release Notes for Ubuntu:
> Fix Released
> Status in “linux” package in Ubuntu:
> Triaged
> Status in “linux” source package in Natty:
> Incomplete
> Status in “linux” source package in Oneiric:
> Triaged
>
> Bug description:
> This is a regression moving from maverick->natty. With the same sort
> of light interactive usage, Battery life has gone from ~4 hours to
> 2:45 or so.
>
> Running powertop shows the system in P-state "Turbo mode" 10-15% of
> the time. Typically this was almost zero in maverick, 98+% of the
> time maverick was in the lowest state.
>
> wakeups reported in the 5-600/s range where previously (from memory)
> it was 200 ish. i915 driver is high on the list. This is
> irrespective of whether running unity or classic desktop.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 11.04
> Package: linux-image-2.6.38-8-generic 2.6.38-8.42
> Regression: Yes
> Reproducible: Yes
> ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
> Uname: Linux 2.6.38-8-generic x86_64
> AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
> Architecture: amd64
> ArecordDevices:
> **** List of CAPTURE Hardware Devices ****
> card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: james 2068 F.... pulseaudio
> CRDA: Error: [Errno 2] No such file or directory
> Card0.Amixer.info:
> Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 47'
> Mixer name : 'Conexant CX20561 (Hermosa)'
> Components : 'HDA:14f15051,17aa20ff,00100000'
> Controls : 16
> Simple ctrls : 8
> Card29.Amixer.info:
> Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30,
> fw 7XHT24WW-1.06'
> Mixer name : 'ThinkPad EC 7XHT24WW-1.06'
> Components : ''
> Controls : 1
> Simple ctrls : 1
> Card29.Amixer.values:
> Simple mixer control 'Console',0
> Capabilities: pswitch pswitch-joined penum
> Playback channels: Mono
> Mono: Playback [on]
> Date: Wed Apr 13 15:03:35 2011
> EcryptfsInUse: Yes
> HibernationDevice: RESUME=UUID=bb479652-f524-4abe-b1b0-27646d6deebc
> InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate
> amd64 (20100928)
> MachineType: LENOVO 7465CTO
> ProcEnviron:
> LANGUAGE=en_US:en_GB:en
> PATH=(custom, user)
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic
> root=UUID=266abe9a-19c2-4cc3-9ef7-238b729b6044 ro quiet splash
> libata.force=noncq vt.handoff=7
> RelatedPackageVersions:
> linux-restricted-modules-2.6.38-8-generic N/A
> linux-backports-modules-2.6.38-8-generic N/A
> linux-firmware 1.50
> RfKill:
> 0: phy0: Wireless LAN
> Soft blocked: no
> Hard blocked: no
> SourcePackage: linux
> UpgradeStatus: Upgraded to natty on 2011-04-06 (7 days ago)
> dmi.bios.date: 11/10/2009
> dmi.bios.vendor: LENOVO
> dmi.bios.version: 6DET61WW (3.11 )
> dmi.board.name: 7465CTO
> dmi.board.vendor: LENOVO
> dmi.board.version: Not Available
> dmi.chassis.asset.tag: No Asset Information
> dmi.chassis.type: 10
> dmi.chassis.vendor: LENOVO
> dmi.chassis.version: Not Available
> dmi.modalias:
> dmi:bvnLENOVO:bvr6DET61WW(3.11):bd11/10/2009:svnLENOVO:pn7465CTO:pvrThinkPadX200s:rvnLENOVO:rn7465CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
> dmi.product.name: 7465CTO
> dmi.product.version: ThinkPad X200s
> dmi.sys.vendor: LENOVO
>
> === Release Notes ===
>
> Due to a regression inherited from the upstream linux kernel, Natty 11.04
> can exhibit a 10-30% increase in power consumption. This is a known issue
> which is actively being investigated. A SRU will be released onced a viable
> solution is found. For more information, please see
>
> http://www.phoronix.com/scan.php?page=article&item=linux_mobile_uffda&num=1
>
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>