The Definitive Guide to Acer Aspire Gemstone Blue Throttling Issues

[weinter]

Ok I checked the DSDT seems ok using the latest BIOS after
I dissembled the BIOS and extracted the DSDT.
What I want to suggest is go to the registry and delete the old DSDT table so Vista will attempt to acquire a new DSDT Table from the BIOS.
The location of the DSDT Table is as Follows:
[HKEY_LOCAL_MACHINE\HARDWARE\ACPI\DSDT]
My rationale is I am not sure if Vista "backup" DSDT or automatically acquire DSDT from BIOS on Boot.
If it "backup" DSDT in the registry the new patched BIOS DSDT settings will not get through.
Anyway deleting the DSDT will not cause BSOD or anything.
I have done it before.

[DarkSilver]

Ok I checked the DSDT seems ok using the latest BIOS after
I dissembled the BIOS and extracted the DSDT.
What I want to suggest is go to the registry and delete the old DSDT table so Vista will attempt to acquire a new DSDT Table from the BIOS.
The location of the DSDT Table is as Follows:
[HKEY_LOCAL_MACHINE\HARDWARE\ACPI\DSDT]
My rationale is I am not sure if Vista "backup" DSDT or automatically acquire DSDT from BIOS on Boot.
If it "backup" DSDT in the registry the new patched BIOS DSDT settings will not get through.
Anyway deleting the DSDT will not cause BSOD or anything.
I have done it before.

Tehsuigi, you try it 1st FTW! Because my system is OK now. In addition, I am on final as well. LOL. Same same. XD I am planning for cooler too. If any model cheap and reliable(useful), please stay in touch with me. Thanks.

Weinter, you're using AS6920G? You seems really pro in computing. XD

Nevertheless, check my THROTTLING 6920G fix guide here, Acer Aspire 6920G - Throttle FIX!
There is a person claims some BIOS stuffs and successfully fix the throttling using it.

[TehSuigi]

I'll give it a spin later tonight, after I'm done studying.
It's entirely possible that since I never reinstalled my operating system after doing BIOS updates (unless the in-place upgrade from Vista to 7 counts), I'm still using the DSDT table from BIOS 1.06.

[DarkSilver]

I'll give it a spin later tonight, after I'm done studying.
It's entirely possible that since I never reinstalled my operating system after doing BIOS updates (unless the in-place upgrade from Vista to 7 counts), I'm still using the DSDT table from BIOS 1.06.

Is the restore to default factory from acer hidden partition counts as a re-installation of OS?

But so far I know your AS 6920G is basically from Windows Vista HP x86 then upgrade(reinstall OS?) to Vista Ultimate x64 and then upgrade again(reinstall OS?) to 7 x64. Are these counted as re-installation of OS?

[weinter]

Is the restore to default factory from acer hidden partition counts as a re-installation of OS?

But so far I know your AS 6920G is basically from Windows Vista HP x86 then upgrade(reinstall OS?) to Vista Ultimate x64 and then upgrade again(reinstall OS?) to 7 x64. Are these counted as re-installation of OS?

No Factory Installed uses the Windows Registry from the time when the Image was created by some Acer tech so the BIOS could be ancient.

[weinter]

The Server BIOS trick sound fake.
BIOS has lots of specific customization to each laptop so you cannot just happily use any BIOS.
Even a predecessor model it is not possible because of different Chips and ACPI settings.

[DarkSilver]

I had restore to default factory plenty of times. But restore to default factory doesn't change the BIOS right?
The BIOS in the CPU-Z shown I am using v1.14 even I have restore to default factory many times.

Now, the only question left is, is it the Windows Registry didn't know the changes of new BIOS? So, it still acts as the ancient BIOS setting?

About the server bios, it does sound fake of course.

[weinter]

BIOS is read only so default factory doesn't touch BIOS unless you flash it.
Problem is factory image backups everything that was created from factory image hence the DSDT Tables as well.
As I said I don't know if Vista will automatically request new ACPI info from the BIOS or it will use the old ACPI acquired from Factory Image.
I have seen some people with Wrong Processor Info in device manager due to factory image wrong configuration hence using this parallel I am assuming the same result.

[DarkSilver]

BIOS is read only so default factory doesn't touch BIOS unless you flash it.
Problem is factory image backups everything that was created from factory image hence the DSDT Tables as well.
As I said I don't know if Vista will automatically request new ACPI info from the BIOS or it will use the old ACPI acquired from Factory Image.
I have seen some people with Wrong Processor Info in device manager due to factory image wrong configuration hence using this parallel I am assuming the same result.

If Vista acquired the ancient BIOS setting from factory image instead of ACPI(1.14 BIOS), then I think you guide/tweaks/theory might be true.
We can confirm this with Tehsuigi sooner or later.

[TehSuigi]

First thing, 2000th post. Shweet.

Secondly, I tried Weinter's DSDT suggestion. Didn't fix the throttling issue, and I think it might have mucked up my wireless connection somehow. One System Restore later, though, and we're back and running.
However.
I think Weinter's on the right track. The DSDT in registry is the one used by Windows (not the one from BIOS), and it can be patched.
Therefore, I believe that a permanent fix is possible by changing the DSDT itself.
I found three patching guides online, but all of them deal with other makes and models. In theory, the thing should be the same.
If the DSDT controls the fan, we'll just make it spin faster.
But if it controls the thermal throttling temperatures, we can set them to sane levels and stop this whole sordid mess!