For requests, I would like to see

• a direct link to the BIOS file
• your PC specs (CPU, Chipset and Graphics Card)
• and a description of the issues, sometimes it's not from the BIOS..

Intel® Core™2 Duo Processor T5500
Mobile Intel® 945PM Express Chipset
ATI Mobility Radeon X1700 External VRAM 256MB (512MB with Hyper Memory)

Wow... like every time I come back to this thread I see another handful of can you fix my Dell?

...The answer is NO..and the reason is simple, there are NO tools out there at the moment to do it! Want to change that?? Well start getting active in other forums where A LOT of people modify BIOS, ask around and keep an eye out for new tools.

Better yet track down some Dell Engineers and have a chat or email them a request to either modify the DSDT table for you by taking out the alias line (if that is all it is) or by (and less likely) just giving you the developers tools that they use to make and modify BIOS and decrypt and encrypt them. Until this happens stop asking... this thread has enough people asking the same questions. And this has been explained already in pretty much the same amount of detail.

Hope you get the DSDT kext fix working soon Kabyl.. these Dell boys are getting restless for it and I am sure all these other notebooks are keeping you busy.

I modified most of the BIOSes posted in the last 3 pages, and found that I've already did some of them (lazy people are wasting my time), so I decided to make things more organized by keeping the files in one place.. I will post a link once it's done.

Well, I guess the title says it all, after spending a lot of time reading Documentations, Specifications, Forums.. and hunting for testers , I finally got tehmachacker (thank you) to test a modified BIOS, and as expected, it worked.

This is the issue that intends this mod to fix:
http://forum.insanelymac.com/index.php?showtopic=78235

Basically, what I'm doing is modifying and fixing errors in the DSDT; removing aliases for the "processor" devices, because the ACPIPlatform kext doesn't like them and treat them as other CPUs.. (it's written for Macs, and Apple doesn't use that in their Firmware's ACPI Tables, actually I don't see why we need them, well..)
I for example change this:

into:

Sometimes I have to fix more stuff.. you should know that when you try to compile your DSDT.

So if you want to get a fixed BIOS, you can PM me post your request here, included with:

• a direct link to the BIOS file,
• your PC specs (CPU, Chipset and Graphics Card),
• and a description of the issues.

Don't PM me with requests, post them in this thread.

I will try to make a repository if I get more fixed BIOSes, so that other people will benefit from it.

Keep in mind that I take no responsibility for a bad flash or if anything goes wrong..

NOTE: About Dell laptops, I'm still trying to find the cause of the issues, so if anyone has any suggestions, you're welcome .

NOTE: About Dell laptops, I'm still trying to find the cause of the issues, so if anyone has any suggestions, you're welcome

I modified most of the BIOSes posted in the last 3 pages, and found that I've already did some of them (lazy people are wasting my time), so I decided to make things more organized by keeping the files in one place.. I will post a link once it's done.

NOTE: About Dell laptops, I'm still trying to find the cause of the issues, so if anyone has any suggestions, you're welcome .

From Netkas Forum, Thread:Thoery: Dell HPET error and possible dual-core solution

Just to update my progress/research notes here...

I've determined that devices are declared in the ACPI Namespace via compiled ASL that is usually stored in the DSDT table or in a SSDT table. The DSDT is where the root namespace is initialized while the SSDT is where additional devices and ALM code can be added. My best bet at this point is to compile some ASL logic for describing the HPET device and add that compile ALM code into and SSDT table entry and append it to the RSDT table declared by the BIOS (hopefully there is an empty entry or free memory at the end).

For completeness, here's a link to bthomp's thread on natkas.org regarding Dell BIOS HPET issue:
http://forum.netkas.org/index.php/topic,43.0.html