maemo.org - Talk - [Announce] kernel-power stable v49 in Extras-Testing

# kernel configuration file generated by /usr/sbin/kernel-config

MINFREQ=500

MAXFREQ=850

FREQS="0:30,90 250:38,180 500:30,360 550:33,400 600:38,430 720:45,430 805:48,430 850:48,500 900:54,500 950:54,500 1000:48,500 1100:72,520 1150:72,520 "

SMARTREFLEX_VDD1=0

SMARTREFLEX_VDD2=0

GOVERNOR=ondemand

IGNORE_NICE_LOAD=1

UP_THRESHOLD=75

SAMPLING_RATE=150000

POWERSAVE_BIAS=0

Please note that I've already removed the 700MHz entry and changed the one for 750MHz to 720MHz.

The problem is that when I load this profile I get the following error messages:

Code:

Nokia-N900-02-8:~# kernel-config load myprofile

loading /home/user/.kernel/myprofile1

sh: write error: Invalid argument

sh: write error: Invalid argument

successfully loaded.

I tracked it down to these two lines in kernel-config:

Code:

    echo $vsel > $pwr/vdd1_opps_vsel                          

    echo $rate > $pwr/dsp_opps_rate

The reason seems to be that $vsel and $rate still contain entries for the 700MHz setting since it's one value more than the files they are written to contain:

Code:

Nokia-N900-02-8:~# cat /sys/power/vdd1_opps_vsel 

30 38 48 54 60 60 60 60 60 60 60 72 72 

Nokia-N900-02-8:~# cat /sys/power/dsp_opps_rate 

90 180 360 400 430 520 520 520 520 520 520 520 520

outputs of the variables in kernel-config just before they are written to the files:

Code:

vsel 30 38 38 30 33 38 45 48 48 54 54 48 72 72

rate 90 180 180 360 400 430 430 430 500 500 500 500 520 520

So it seems like my profile is not the only file I have to edit to remove the 700MHz setting. Can somebody please tell me where else I have to look for it?

majaczek

2012-02-05 18:11

Re: [Announce] kernel-power stable v49 in Extras-Testing

i'm not sure sulu, but i believe it's the only file you need to edit.
notice when you remove 700 and 750 freq from the list and add the 720 one, you have exactly one less in frequencies count, so guess what it means and remove correct one from vsel and rate lists...

am i smart enough ? :)

and sorry all (including pali, freemangordon, estel, vi_) about some stupid things i said once in history since i am an computer pro but rather linux noob so there is sometimes things got crazy i said as a result - well i can't guess all linux technicalies so while posing pro i may *sometimes* say very nooob things. And all people which I said sorry to, I hope you don't have me at blackilist/ignore_list, or whatever the forum delivers, yet.

EDIT: my concerns about changing KP versions and multiboot was really dumb, and most of it i could checked myself (there was just old entries invalidated by update). BTW (for pure curiosity though) is it possible install both newer and older version of KP obtainable through multiboot ? (I'm curious if there exist some package maintaining trick or if it is just impossible with same named packages and different versions of them). Of course all my problems regarding my actual multiboot config was easily fixed (it was just to remove entries for older KP and older KBFS from the list since upgrade of packages removed things needed by old entries - what a my derp... - i have written about 4 posts about it some time ago while it was pretty obvious)

sulu	2012-02-05 19:17

Re: [Announce] kernel-power stable v49 in Extras-Testing

Quote:

Originally Posted by majaczek (Post 1160936)

notice when you remove 700 and 750 freq from the list and add the 720 one, you have exactly one less in frequencies count, so guess what it means and remove correct one from vsel and rate lists...

My thoughts exactly. ;)
But how do I do that (without adding evil hacks to the kernel-config script)?

vi_	2012-02-05 19:37

Re: [Announce] kernel-power stable v49 in Extras-Testing

Quote:

Originally Posted by sulu (Post 1160955)

My thoughts exactly. ;)
But how do I do that (without adding evil hacks to the kernel-config script)?

Then you need to make a patch for a new version of KP!

FWIW!

I do not use KP settings, I gave up on it a long time ago. There is some kinky bug that appears some times that makes the whole thing spazz out leading to massive battery drain leaving you no option but to power off and pull the battery.

I use 2 scripts:

/etc/X11/Xsession.post/80avoidfreqs:

Code:

#!/bin/sh

    sudo /opt/scripts/avoid_freqs.sh

and

/opt/scripts/avoid_freqs.sh:

Code:

    #!/bin/sh

    ##set some frequencies

    #avoid frequencies

    echo "125000 550000 600000 805000 950000 1000000 1100000 1150000" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/avoid_frequencies

    #up threshold

    echo 75 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold

    #nice load

    echo "0" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load

     

    ##Set DSP freqs

    echo "90 90 180 360 400 430 520 600 600 600 600 600 600" > /sys/power/dsp_opps_rate

     

    ##FS mods

    #enable camera button

    #echo "cam"

    chmod 666 /sys/devices/platform/gpio-switch/cam_focus/disable

    echo 0 > /sys/devices/platform/gpio-switch/cam_focus/disable

    chmod 444 /sys/devices/platform/gpio-switch/cam_focus/disable

     

    #FM boost/region

    #echo "fmtx"

    chmod 666 /sys/class/i2c-adapter/i2c-2/2-0063/region

    echo 4 > /sys/class/i2c-adapter/i2c-2/2-0063/region

    chmod 644 /sys/class/i2c-adapter/i2c-2/2-0063/region



    #load injection drivers

    /opt/wifi/load.sh

          

    #setup wifi for all channels

    iw reg set JP



    exit

These fill in gaps that are left by pmconfig, it also does some other nice stuff like open wifi channel 13, maximise FMTX power, enable cam focus button through lockscreen to allow skipping tracks while locked with buttin and soon, when kp50 rolls around, disable red LED.

One day I will get around to bodging this into pmconfig, however it seems to run fine right now so uh f**kit.

Estel

2012-02-05 19:49

Re: [Announce] kernel-power stable v49 in Extras-Testing

It's quite funny, as I've never ever encountered any problem with kp settings, not to mention battery drain.

/Estel

sulu	2012-02-05 20:28

Re: [Announce] kernel-power stable v49 in Extras-Testing

KPv49 works fine for me circa one week now and v42 has been working fine since I bought my N900. I never encountered any battery drain.

It seems like there are spare values for what might have been a 125MHz setting (the 2nd value in $vsel andf $rate doesn't belong there). I tried fixing it by adding a 125MHz setting to the FREQS line in my profile but the error didn't change.

My evil hack for now is to add these two lines to kernel-config just before $vsel and $rate are written to the files to delete the 2nd value of each line:

Code:

vsel=`echo $vsel | sed s/\ [0-9]\\\+//`

rate=`echo $rate | sed s/\ [0-9]\\\+//`

It works for me but it's really just an ugly evil hack, so it doesn't qualify as a patch at all.

Edit:
Can somebody who runs v49 and uses a profile file please post his file so that I can try to find any critical differences?

xes	2012-02-05 22:41

Re: [Announce] kernel-power stable v49 in Extras-Testing

@freemangordon
do you have any news about the voltage boost and regulation at 805/850 Mhz?

freemangordon

2012-02-06 07:03

Re: [Announce] kernel-power stable v49 in Extras-Testing

Quote:

Originally Posted by xes (Post 1161019)

@freemangordon
do you have any news about the voltage boost and regulation at 805/850 Mhz?

What news do you expect? Something like that? Or I am missing something.

ibrakalifa

2012-02-06 07:35

Re: [Announce] kernel-power stable v49 in Extras-Testing

Quote:

Originally Posted by woody14619 (Post 1160679)

Uh? What's that got to do with any of this?

The default N900 is like an oven without a dial, just a big "auto-cook" button. The K## packages provide lots of thin metal cylinders you can turn to change the settings, but most can't grip them well enough to use them directly. The settings package is "the big plastic knob" on the front that makes it easier to use. But if you turn the oven up to twice it's rated value and it catches on fire, it's not the plastic knobs fault.

Some devices simply can't operate at faster speeds. It has nothing to do with the tools that configure the system. It's a hardware limitation. Nokia/TI tested these to work up to 600Mhz. Some reboot at 605Mhz, some reboot at 1200Mhz. If your device explodes randomly going over 850Mhz, then don't set it above that. Done.

when use kp48 i never had trouble like THIS!!! done? what ur mean then?

fw190

2012-02-06 07:41

Re: [Announce] kernel-power stable v49 in Extras-Testing

I did some testing. Made a clean reflash and can confirm what was said. If someone wants a fast, and saving battery N900 just launch DSP profile and that is it. Few months ago I've tested battery patch and comparing it with DPS from Freemangordon it just doesn't work.Batterygraph shows that at night the phone nearly doesn't use cpu. With BP it used a lot more. One other important thing. It is good to have a clean install with just the stuff you use. Unused crap made my phone act strange. Further more all the apps for battery stats showing, cpu saving, overclocking etc. didn't help. I can not explain it. Without them and just with DSP loaded the usage at night is close to zero.

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