Haha, yes you do indeed need to sudo... or be root. I'm assuming Jose is
using root, since he didn't mention any other errors.
Can't remember if link_power_management_policy is something crazy like
400 or what? --Jim
On Sun, 2009-11-08 at 22:08 +0100, miegiel wrote:
> I think you need to do a 'sudo su' before you run those lines.
>
> Jim wrote:
> > Jose,
> >
> > I do know that when I try to write to the link_power_management_policy
> > file in the directories host0 and host5 I get Permission Denied errors.
> > For the file in the directories host1 through host4 it writes fine, and
> > the files stay as written (i.e, nothing automated is changing them). On
> > my old Dell Insprion 1520 I am able to write to host0, and host0 was the
> > sole directory in there.
> >
> > But, as for the directories being non-existent... I'm not sure about
> > that one. I've got about zero knowledge of the SATA power management
> > stuff right now, I just haven't had the time. To be honest I'm not sure
> > if writing to just host1 through host4 is really is doing anything.
> > I read it did so I left it in just in case.
> >
> > We should probably start a new thread if we talk about this more. :o)
> >
> > Jim
> >
> > On Sun, 2009-11-08 at 19:53 +0100, Jose Baeza Noci wrote:
> >
> >> Jim,
> >>
> >> I have a 5810TG (Intel Core2 Duo-SU9400) model. I used it under 9.04
> >> and now under 9.10 (K-2.26.31.15). After upgrade I cound not activate
> >> wireless power save mode, but thanks to wireles-compat, I can activate
> >> it. I have tryied your script but got these errors (min.cons. 11,5 W):
> >>
> >> host0 result:
> >> sh: cannot create /sys/class/scsi_host/host: Directory nonexistent
> >> sh: 0/link_power_management_policy: not found
> >> cat: /sys/class/scsi_host/host0/link_power_management_policy: No
> >> existe el fichero ó directorio
> >> host1 result:
> >> sh: cannot create /sys/class/scsi_host/host: Directory nonexistent
> >> sh: 1/link_power_management_policy: not found
> >> cat: /sys/class/scsi_host/host1/link_power_management_policy: No
> >> existe el fichero ó directorio
> >> host2 result:
> >> sh: cannot create /sys/class/scsi_host/host: Directory nonexistent
> >> sh: 2/link_power_management_policy: not found
> >> cat: /sys/class/scsi_host/host2/link_power_management_policy: No
> >> existe el fichero ó directorio
> >> host3 result:
> >> sh: cannot create /sys/class/scsi_host/host: Directory nonexistent
> >> sh: 3/link_power_management_policy: not found
> >> cat: /sys/class/scsi_host/host3/link_power_management_policy: No
> >> existe el fichero ó directorio
> >> host4 result:
> >> sh: cannot create /sys/class/scsi_host/host: Directory nonexistent
> >> sh: 4/link_power_management_policy: not found
> >> cat: /sys/class/scsi_host/host4/link_power_management_policy: No
> >> existe el fichero ó directorio
> >> host5 result:
> >> sh: cannot create /sys/class/scsi_host/host: Directory nonexistent
> >> sh: 5/link_power_management_policy: not found
> >> cat: /sys/class/scsi_host/host5/link_power_management_policy: No
> >> existe el fichero ó directorio
> >>
> >> Any idea?
> >>
> >> Thanks,
> >>
> >> Jose
> >>
> >> El vie, 06-11-2009 a las 07:40 -0700, Jim escribió:
> >>
> >>> Dan,
> >>>
> >>> Which timeline do you have?
> >>>
> >>> As far as the battery life goes, are you running 9.10 out of the box? Or
> >>> have you tried adjusting a few things? For example, when I did a
> >>> "apt-get dist-upgrade" (not a clean install) from 9.04 to 9.10 things
> >>> went smoothly.
> >>>
> >>> However, there where little glitches. Most important to battery life was
> >>> that the CPU governor was locked into max performance and I had to
> >>> change it by hand.
> >>>
> >>> Also, do you have the your wireless card set to use power management
> >>> features (this does not seem enabled by default)?
> >>>
> >>> Just about everything was cleaned up with a clean install.
> >>>
> >>> Let us know, because if you've done all that stuff (and more!) and still
> >>> are getting ~4hrs, something else needs to be done!
> >>>
> >>>
> >>> Here's a script I use to quickly set a few power-related settings. Don't
> >>> run it blindly, make sure you understand at least a little what stuff
> >>> does, unless you already do. ;P
> >>>
> >>>
> >>> #!/bin/bash
> >>>
> >>> echo 5 > /proc/sys/vm/laptop_mode
> >>> echo 60 > /proc/sys/vm/dirty_ratio
> >>> echo 1 > /proc/sys/vm/dirty_background_ratio
> >>> #echo 60000 > /proc/sys/vm/dirty_writeback_centisecs
> >>> echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
> >>>
> >>> echo "enabling wlan0 power management"
> >>> iwconfig wlan0 power on
> >>>
> >>> echo "disabling wake-on-lan"
> >>> sudo ethtool -s eth0 wol d
> >>>
> >>> for i in {0..5};
> >>> do echo host$i result:;
> >>> sudo sh -c "echo 'min_power' > /sys/class/scsi_host/host
> >>> $i/link_power_management_policy";
> >>> cat /sys/class/scsi_host/host$i/link_power_management_policy;
> >>> done
> >>>
> >>> echo "laptop disc mode: "
> >>> cat /proc/sys/vm/laptop_mode
> >>> echo "dirty ratio: "
> >>> cat /proc/sys/vm/dirty_ratio
> >>> echo "dirty background ratio: "
> >>> cat /proc/sys/vm/dirty_background_ratio
> >>> echo "dirty writeback centisecs: "
> >>> cat /proc/sys/vm/dirty_writeback_centisecs
> >>>
> >>>
> >>>
> >>> Jim
> >>>
> >>>
> >>> On Fri, 2009-11-06 at 02:52 -0600, Daniel Grosser wrote:
> >>>
> >>>> I guess it's about time to reply here. here's my week's experience
> >>>> with ubuntu 9.10.
> >>>>
> >>>> cons:
> >>>>
> >>>> battery life is LOW. I used the laptop for about 3 hours at school
> >>>> today and within a half hour of use at home i had "20 minutes" left.
> >>>> in ubuntu 9.04 i was getting around 6.5 hours. enough life to last me
> >>>> a week most of the time.
> >>>>
> >>>> karmic constantly drops wireless connections and now i can't get it to
> >>>> find my home network a whole 3 feet away from the router. i get
> >>>> irritated when i have to boot into win7 to check my email.
> >>>>
> >>>> the whole machine is slower in general. in fact, even on my desktops
> >>>> i get better performance out of a p4 on 9.04 than an amd 4000+ (5
> >>>> years newer) on 9.10.
> >>>>
> >>>> graphics are slower for sure, i manage to get the machine to stutter
> >>>> changing between desktops (i'm not playing crysis here). something
> >>>> that never happened before.
> >>>>
> >>>> i can't figure out how to work the new application manager to save my
> >>>> life.
> >>>>
> >>>> suspend/resume still doesn't work
> >>>>
> >>>>
> >>>> pros:
> >>>>
> >>>> external displays are immediately available upon connection.
> >>>>
> >>>>
> >>>> summary:
> >>>>
> >>>> I did upgrade this machine from 9.04 to 9.10 via synaptic. i hope
> >>>> that the problems i am having will be cured with a clean install but
> >>>> i'm skeptical. i suppose i can always boot into windows and run 9.04
> >>>> in vmware if i need to do anything in linux with network access.
> >>>>
> >>>> The bottom line is that i would recommend ubuntu 9.04 all day long to
> >>>> anyone that needs a reliable system. I don't know much about the
> >>>> whole programming thing (i'm ok with "hello world") but i know how to
> >>>> use a computer. I feel it would have been better to iron out the bugs
> >>>> than to release 9.10 on time. I don't have time to hassle with the OS
> >>>> which is why i switched to linux in the first place.
> >>>>
> >>>> I don't mean to sound too negative here because i really do like the
> >>>> new version of ubuntu when it works, but vista wasn't that bad when it
> >>>> worked either.
> >>>>
> >>>>
> >>>>
> >>>> if any of you guys know of fixable bugs with the wireless let me know.
> >>>> i can work with everything else, but that is the deal breaker for me.
> >>>>
> >>>>
> >>>>
> >>>> dan
> >>>>
> >>>>
> >>>>
> >>>> On Thu, Nov 5, 2009 at 3:44 PM, Jim <[email protected]> wrote:
> >>>>
> >>>>> Gustavo,
> >>>>> Off topic...but I'm really curious.
> >>>>>
> >>>>> Do you not have Intel wireless card? I thought the ath modules where for
> >>>>> wired ethernet. I compiled the compat-wireless snapshot from 10-28-09
> >>>>> and presto! Wireless works better than ever. Better results for me than
> >>>>> with the backports package from the repos.
> >>>>>
> >>>>> Jim
> >>>>>
> >>>>> On Thu, 2009-11-05 at 17:23 -0200, Gustavo Azambuja wrote:
> >>>>>
> >>>>>> I have 4810TZ with fresh install of Karmic, cheese 2.28.1, and webcam
> >>>>>> work fine. without problems or hacks.
> >>>>>>
> >>>>>>
> >>>>>> Not work:
> >>>>>> mousepad disable button (but i not use this...)
> >>>>>> integrate mic (im waiting for this work...)
> >>>>>> also, not always, but 2 times in a week, my wifi stop working, and I
> >>>>>> have to do:
> >>>>>> sudo rmmod ath9k; sudo modprobe ath9k;
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> On Thu, Nov 5, 2009 at 17:11, Nick Glynn <[email protected]> wrote:
> >>>>>> I finally upgraded (fresh install) to Karmic on my 4810T and
> >>>>>> was saddened to find that the mousepad disable button still
> >>>>>> failed, brightness controls still did nothing and the physical
> >>>>>> eject button 'disconnects' the drive in dmesg - I can accept
> >>>>>> *all* of that as it's still better than Vista but one thing
> >>>>>> that's miffed my partner is the fact that the Webcam is no
> >>>>>> longer picked up in cheese.
> >>>>>>
> >>>>>> Can anyone else verify this or know of a fix? I've also posted
> >>>>>> to the 4810T thread on the forums but no answers yet.
> >>>>>>
> >>>>>> Cheers!
> >>>>>> Nick
> >>>>>>
> >>>>>> _______________________________________________
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> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> --
> >>>>>> Gustavo Azambuja - Linux User: 275813
> >>>>>> Sip Number: 1-747-132-7623
> >>>>>> http://www.twitter.com/gazambuja
> >>>>>>
> >>>>>>
> >>>>>> _______________________________________________
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> >>>>>>
> >>>>>
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> >>>>>
> >>>
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> >>> _____________________________________________________________________
> >>> Mensaje analizado y protegido por Telefonica Empresas
> >>>
> >
> >
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