iLiad Another Powersaving idea?

[Adam B.]

oops...I meant "Shouldn't"

[rincewind]

Originally Posted by k2r

I don't expect us to get an unbricking solution within the next decade, so this Voodoo seems to be the most reasonable compile-it-yourself approach. It should be easily implemented by somebody familiar with the iPDF sources.

With fear of repeating myself, I made such a patch for ipdf firmware version 2.9. It throttles the CPU automatically, using 400Mhz for rendering/zoom etc, 200Mhz for scribbles and 100Mhz for idle. It's available at iRex forums. There's a pre-compiled ipdf for those that trust binary downloads from the Internet running as root on their computers. ;-)

Oh, and it was done in a day and a half, with 3 kids around - which is more like 3 hours of actual time. :-)

/R

[narve]

I seems that rincewinds new ipdf works like a charm... nice work! Will try to see if I actually get that 15 hours now!

[mtas]

Originally Posted by narve

I seems that rincewinds new ipdf works like a charm... nice work! Will try to see if I actually get that 15 hours now!

For those that would like to try out rincewinds modified ipdf here's a ZIP-file with an installer/deinstaller.

[narve]

Originally Posted by mtas

For those that would like to try out rincewinds modified ipdf here's a ZIP-file with an installer/deinstaller.

Damn, you beat me to it -- I wanted to contribute something too

[mtas]

Originally Posted by narve

Damn, you beat me to it -- I wanted to contribute something too

Well, he beat me to the ipdf modification so. . .

[CommanderROR]

Great work guys!

I am on the road (in the train) right now, but I'll be sue to check it out when I get home.

[m-s-s]

hello,
i tried the cpufreq-script from k2r.
i put it in a directory "cpufreq" on my sd-card, but when i push the button to start the script nothing happens.
the green led shortly blinks and thats all.

what do i wrong?

how can i see if the frequency has changed?

thanks for your help

m-s-s

[narve]

Originally Posted by mtas

For those that would like to try out rincewinds modified ipdf here's a ZIP-file with an installer/deinstaller.

But now we've gotten a new ipdf... so a suitable task for a wanna-be-programmer is to apply rincewinds patch to the new source and recompile it, right? Anyone?

[k2r]

Originally Posted by m-s-s

the green led shortly blinks and thats all.

Hi,

the script works though there seems to be a problem when you use it to switch down to the lowest possible speed (33000). The speed is changed but the iliad does not return to the content-lister.
If you press the up/down-buttons or the pagebar your iliad should return to the content-lister.

You can see if the speed is changed if you enter a speed different to 33000 MHz into the comment-field of the script. After running the script the comment-field should read the actual frequency the iliad was set to.

For example: trying to switch to 500000 should result in 398000.

I will change the default-speed of the script to 100000 to avoid further confusion.

UPDATE:
I just found out that I changed the script already to make 200000 KHz the default value. Which version did you download? What did the comment-line say before you first ran the script?

UPDATE:
Stupif me.I read your message again. Yes, the speed changed. You can try to set the iliad to 200001 KHz for example.

k2r

[m-s-s]

hello,

thanks f your answer.

i tried it with the following frequencys:
33
200

33 000
200 000
200 001

33 000 000
200 000 000

i've done this, because i don't know which freqency unit it's been used; mhz, khz, hz.

please say with which firmware version the script works?

because my version is still 2.71.

bye
m-s-s

[emkay]

Originally Posted by mtas

For those that would like to try out rincewinds modified ipdf here's a ZIP-file with an installer/deinstaller.

Hi mtas.
I installed the powersaving ipdf using your installer. Then I updated my iLiad to 1.9.1. I'm now wondering, which ipdf am i using, rincewinds, or iRex's? And if I choose the option to uninstall rincewind's, will I then have the new iRex version?

Thanks!

[mtas]

Originally Posted by emkay

Hi mtas.
I installed the powersaving ipdf using your installer. Then I updated my iLiad to 1.9.1. I'm now wondering, which ipdf am i using, rincewinds, or iRex's? And if I choose the option to uninstall rincewind's, will I then have the new iRex version?

Thanks!

After the update you are using iRex's version. As far as I know there is no "tweaked" version for 1.9.1 yet (the reason that I personally has not upgraded my device).

In future installers I'll include a README file that'll inform people that a restore to original state is recommended before upgrading.

[k2r]

Originally Posted by m-s-s

i tried it with the following frequencys:
33

Since the lowest possible frequency in Hz is 33000 the script's comment should read 33000 after trying to set 33.

Originally Posted by m-s-s

i've done this, because i don't know which freqency unit it's been used; mhz, khz, hz.

It's Hz in an absolute number without the unit.

Originally Posted by m-s-s

please say with which firmware version the script works?

2.9 and maybe 2.9.1. I don't know about 2.7.1. If the script's comment changes from 33 to 33000 after running, it works.

And - of course - you have to thave shell-access enabled.

Why do you (have to?) stay on 2.7.1 ?

k2r

[emkay]

Originally Posted by mtas

After the update you are using iRex's version. As far as I know there is no "tweaked" version for 1.9.1 yet (the reason that I personally has not upgraded my device).

In future installers I'll include a README file that'll inform people that a restore to original state is recommended before upgrading.

So will all be OK if I now choose "Restore iRex ipdf", when I am already using it?