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"Latitude with broken BIOS" ?

DISCUSSION Alessandro Suardi 2 participants 2 messages Jan 20, 2003

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Quoted 7 lines · Dave Jones
Quoted 2 lines · Alessandro Suardi

I was hoping to use HT on my new Latitude C640 (P4 @ 1.8Ghz) but at boot both 2.4.21-pre3 and 2.5.59 (obviously with a SMP kernel) tell me

I'd be surprised^Wamazed if your laptop has HT. AFAIK, no-one is shipping such a system yet. Just because the CPU flags say 'ht' does not mean it has >1 CPU thread per CPU package.

I'd imagined this - but digging on the Intel website I couldn't find anything
that told me "the mobile P4 can't do HT, period". As a matter of fact not even win2k (I'm dualbooting waiting to install Debian and RHAS...) sees the system as a 2-CPU.

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Quoted 1 line

"Dell Latitude with broken BIOS detected. Refusing to enable the local APIC."

Lots of Dell laptops (like other vendors) crash instantly when trying to enable the APIC.

Well my Dells power off on rebooting from 2.5... bug 119 or 134 in
http://bugme.osdl.org, no need to resort to messing with the APIC ;(

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Quoted 1 line

Is this anything that can be played with ?

Nope.

Oh, okay. Giving up on this one...

Thanks for the quick reply ! Ciao,

--alessandro

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Quoted 5 lines · Alessandro Suardi
Quoted 3 lines
Quoted 1 line

"Dell Latitude with broken BIOS detected. Refusing to enable the local APIC."

Lots of Dell laptops (like other vendors) crash instantly when trying to enable the APIC.

Well my Dells power off on rebooting from 2.5... bug 119 or 134 in
http://bugme.osdl.org, no need to resort to messing with the APIC ;(

That one IMO looks like an ACPI problem (Note ACPI != APIC)

Dave

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| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs