[mythtv-users] 0.14 + VIA M1k + UDMA6 + full duplex =prebuffering
pause
Scott Rowe
mythgnomer at rowelab.com
Fri Mar 26 21:50:57 EST 2004
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Mikhail D'Vane
> Sent: Thursday, March 25, 2004 8:34 PM
> To: mythtv-users at mythtv.org
> Subject: RE: [mythtv-users] 0.14 + VIA M1k + UDMA6 + full duplex
> =prebufferingpause
>
> You probably have a stepping 3 of the Nehemiah processor.
> This processor (or perhaps the kernel support for it) does
> not report mmx capabilities correctly.
>
> One of the directories in /proc will tell you your CPU stepping.
> (Sorry, not in front of any linux machine right now, so I
> can remember exact directory - it's name is pretty obvious.)
>
> If you have a stepping 3, you need to hard code the edx
> return value
> in the cputest.c file and recompile mythtv (or maybe just
> mythfrontend). You can find the exact information on what
> to add to
> the cputest.c file if you search the archive for posts by me with
> "cputest.c" in them.
>
> (cputest.c is in the myth source code. If you go to the top level
> directory where you unpacked mythtv, just do "find -name
> cputest.c" to get the path.)
>
> Hope this is your problem - I puzzled over it for *months* before
> stumbling onto the solution (Google is your friend - try "edx
> cputest.c epia" and you'll find the info I did.)
>
> Mik
Actually, cpuid is 695 (stepping = 5).. So it may not just be
693 that has this problem (forgot to mention that I'd looked
at this, but since it was 695, I ignored it.)
[root at mythbox root]# cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 9
model name : VIA Nehemiah
stepping : 5
cpu MHz : 999.838
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 mtrr pge cmov mmx fxsr sse
bogomips : 1992.29
I'll recompile anyway with the fix in place, and if it does turn out to be
the issue, I guess the stepping 5 version also has the same issue as the 3.
Live and learn!
Thanks,
-Scott
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