[ILUG] Problem installing Linux on Via C3 Processor
Stephen Brooks
steve at brooksweb.net
Sun Oct 19 21:37:26 IST 2008
Jaqian wrote:
> Hi
> I'm having terrible trouble installing any distro on my laptop other than
> the now defunct Freespire. I've come to the conclusion this is down to my
> laptops processor Via C3 (Nehemiah). I'd like to install Kubuntu on my
> laptop but this doesn't seem possible at the moment. Any suggestions on how
> I might work around this?
>
> Here are my cpu's details if it makes sense to anyone...
>
> processor : 0
> vendor_id : CentaurHauls
> cpu family : 6
> model : 9
> model name : VIA Nehemiah
> stepping : 4
> cpu MHz : 665.000
> cache size : 64 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu de pse tsc msr cx8 mtrr pge cmov mmx fxsr sse up rng
> rng_en
> bogomips : 1335.88
> clflush size : 32
>
> Cheers,
> Rob
>
Hi Rob,
I thought this was only an issue with the Samuel cores though I see
this is one of the slower Nehemiahs. If I recall correctly the issue is
a disagreement of i686 supported flags between Via and gcc. The
contention here is the cmov instruction. While it is a 686 instruction
the specs say it's an optional one yet gcc includes it for 686 specified
compilation. Using a 586 or older target architecture should avoid the
use of cmov, I'm guessing 386 would the path of least resistance for
pre-compiled packages.
Best of luck,
Steve
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