Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

[hmoser]

Detection of the correct frequ/power values on my laptop fails due to
broken pst in the bios... so i decided to do an evil hack to the cpufreq
source by hardcoding the pst for my cpu. the problem now is that i dont
find information
about the pst i want (searched google and amd website). So it would help
me alot if anyone could give me a correct pst for a athlon-xp mobile
1500+. thanks

(Im using a 2.4.21 vanilla kernel patched with the cpufreq backport)

Re: Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

[Luigi Belli]

On Sunday 21 September 2003 13:08, hmoser@mosesonline.com wrote:

> Detection of the correct frequ/power values on my laptop fails due to
> broken pst in the bios... so i decided to do an evil hack to the cpufreq
> source by hardcoding the pst for my cpu. the problem now is that i dont
> find information

I did the same thing some time ago, on a 1304LC (AXP 1800+). To find the 
correct steps I used a system information tool called Sandra under Windows, 
detecting the cpu speed under different load conditions.
If you want to take a look at my patch I can send it in your private email.

-- 
"It is not enough to succeed.  Others must fail."
Linux Registered User #301571, running Gentoo
Memeber of Luganega - Linux User Group Crema (IT)
http://filibusta.crema.unimi.it/

Re: Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

[Holger Moser]

Am Sonntag, 21. September 2003 13:23 schrieb Luigi Belli:
> On Sunday 21 September 2003 13:08, hmoser@mosesonline.com wrote:
> > Detection of the correct frequ/power values on my laptop fails due to
> > broken pst in the bios... so i decided to do an evil hack to the cpufreq
> > source by hardcoding the pst for my cpu. the problem now is that i dont
> > find information
>
> I did the same thing some time ago, on a 1304LC (AXP 1800+). To find the
> correct steps I used a system information tool called Sandra under Windows,
> detecting the cpu speed under different load conditions.
> If you want to take a look at my patch I can send it in your private email.

it would be very nice if you could send me your patch (would safe me some 
time). and thanks for pointing me to this tool. seems i have to find the 
values the same way you did (i wonder why there is no tech paper on amds page 
about it)

Re: Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

[Luigi Belli]

On Sunday 21 September 2003 13:32, Holger Moser wrote:
> (i wonder why there is no tech paper on amds
> page about it)

The fact is that it doesn't rely on the cpu itself, I mean that an Athlon XP 
1500+ is certified to run from 1 to 1333Mhz, at a maximum voltage of 1,5V (if 
it's 0,13µ cpu). Steps are decided by the notebook productor, depending on 
the quality of the motherboard, the power supply and so on...

-- 
"It is not enough to succeed.  Others must fail."
Linux Registered User #301571, running Gentoo
Memeber of Luganega - Linux User Group Crema (IT)
http://filibusta.crema.unimi.it/

Re: Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

[Holger Moser]

Am Sonntag, 21. September 2003 13:37 schrieb Luigi Belli:
> On Sunday 21 September 2003 13:32, Holger Moser wrote:
> > (i wonder why there is no tech paper on amds
> > page about it)
>
> The fact is that it doesn't rely on the cpu itself, I mean that an Athlon
> XP 1500+ is certified to run from 1 to 1333Mhz, at a maximum voltage of
> 1,5V (if it's 0,13µ cpu). Steps are decided by the notebook productor,
> depending on the quality of the motherboard, the power supply and so on...

i see. so acer didnt care much about this fact. i only have one pst in my bios 
which has only 500 and 600 mhz at 1.4volt (2 times each). and the fact that 
powernow works under windows means they have their own generic pst for 
various cpus.. which isnt that ideal too. i wonder if windows even cares 
about the pst's in the bios.

Re: Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

[Luigi Belli]

On Sunday 21 September 2003 13:44, Holger Moser wrote:

> i see. so acer didnt care much about this fact. i only have one pst in my
> bios which has only 500 and 600 mhz at 1.4volt (2 times each).

Oh, I forgot to tell you: this problem seems to afflict only bios 3a71, so you 
can try downgrading to the version 3a21 and see if your cpu is supported (I 
tried to do so but my cpu wasn't known by that bios).

-- 
"It is not enough to succeed.  Others must fail."
Linux Registered User #301571, running Gentoo
Memeber of Luganega - Linux User Group Crema (IT)
http://filibusta.crema.unimi.it/

Re: Acer Aspire 1301XV (Athlon-XP Mobile 1500+) BIOS gives "broken" PST

[Holger Moser]

Am Sonntag, 21. September 2003 13:53 schrieb Luigi Belli:
> On Sunday 21 September 2003 13:44, Holger Moser wrote:
> > i see. so acer didnt care much about this fact. i only have one pst in my
> > bios which has only 500 and 600 mhz at 1.4volt (2 times each).
>
> Oh, I forgot to tell you: this problem seems to afflict only bios 3a71, so
> you can try downgrading to the version 3a21 and see if your cpu is
> supported (I tried to do so but my cpu wasn't known by that bios).

hmmm.. maybe ill give it a try.. if it can handle my cpu correct and the 
tables in this bios are correct.. i could just dump them from there and the 
reupgrade to 3a71, patch cpufreq with a correct "faked" pst.

IT WORKS!!

[Holger Moser]

finally cpufreq works!!!. together with cpudyn i now safe power without 
performace loss. JUHU!! :)

Re: IT WORKS!!

[Stefan Gehn]

On Sonntag September 21 2003 16:56, Holger Moser wrote:
> finally cpufreq works!!!. together with cpudyn i now safe power without
> performace loss. JUHU!! :)

And how exactly did you manage to get it working? My Acer Aspire 1301XV (XP M 
1500+) is still a bit hot if you ask me ;)

Bye, Stefan aka mETz
-- 
ICQ#51123152 | Moege der Pinguin mit euch sein