Laptop CPU Problem

LordZog · Posted: Tue Jan 22, 2008 5:03 pm Post subject: Laptop CPU Problem

Using a Toshiba M73 whihc came originally with a Celeron-M 390. UPgraded to a Pentium-M 740 and I have a problem with it.

It is detected by the bios and windows as a Intel Pentium-M 740 at 1.73Ghz, problem is it is only running at 798 Mhz with a multiplier of x6 and a voltage of 0.988.. Now, here is the problem.. The Bios has the latest rev of the microcode for this processor (06d8 rev 20), but the settings are way off.. As this bios is customized by Toshiba themselves, the SpedStep/Power options have been removed from the bios as this machine didn't include a processor that had this option, even tho the chipset (ATI SB450/Mobility Xpress 200M) does have Enhanced Speedstep included, but disabled by bios.. Can I modify the ACPI table manually and then reflash to run correctly? As well, how would I go about doing this? Its hard to find tools for a Phoenix bios that will support the TrustedCore system. Sad

Bios Editor 2.2.0.1 will allow my to look at the ACPI table, but, I am not positive how to change the info as it doesn't seem to be specific to one processor but how to get the info from the chip.. Thanks.

Sharedoc · Posted: Sun Mar 23, 2008 12:23 pm Post subject:

Did you try any utilities if they can switch higher multipliers on?
(Rightmark CPU clock utility etc)

liaoo · Posted: Tue May 27, 2008 2:06 am Post subject:

For notebook the CPU core frequency varis with different loading.

Do you try the case in which "CPU loading is maximum" ? At that time the CPU core frequency "should be" at 133MHz*13 = 1.73GHz

Of course you can use "SpeedStep tools" to check if the multiplier can be changed...

As for modifying ACPI table I think this is not allowed because current config software only "reads" it and "write" is prohibited

If above all failed my suggestion is to report this to Toshiba ^_^

LordZog · Posted: Sat Jun 07, 2008 1:32 am Post subject:

The multiplier can only be changed if I send the right register to the chip.. SpeedStep is disabled and the "Tools" ya can download don't work.. Sad

ACPI can be modified but you need to know what your changing as its just scripting.

I can get it to run full speed now but I have to run my app every boot, but I am trying to solve this low level. As for Toshiba support, all they say is the chip isn't supported, even tho the mobo is the same as the M70's and they came with it.. Just bios limitations on the M73. TOshiba's support is worthless.. Unless I can't get to my Windows Desktop as a problem, they don't know whats wrong with it. Smile