[mythtv-users] Video studder XvMC w/OSD

[Roger Heflin]

Mitch Gore wrote:
> On Wed, Apr 2, 2008 at 9:44 PM, W.Kenworthy <billk at iinet.net.au> wrote:
> 
>>> If it were, cpufreq would be speeding things up, and that is a fairly
>> old cpu,
>>> and it pre-dates Intel putting speedstep on their desktop cpus, they
>> only did
>>> that very recently, and that cpu is not even a 64-bit capable cpu.
>>>
>>> And note that all of the p4 cpus that have speedstep have 2048mb of
>> cache, he
>>> has only 1024mb, so and all with speedstep also have 64 bit, and cpuinfo
>> shows
>>> that the processor is not capable of 64bit.
>>>
>>>                                    Roger
>>>
>>> yes and no: look for p4 clockmod in your modules.
>> yes and no
>>
>> 1.6Ghz P4 (not just old, but ancient) running at 400Mhz
>>
>> grep /usr/src/linux/.config: CONFIG_X86_P4_CLOCKMOD=y
>>
>>
>> myth4 ~ # cat /proc/cpuinfo
>> processor       : 0
>> vendor_id       : GenuineIntel
>> cpu family      : 15
>> model           : 1
>> model name      : Intel(R) Pentium(R) 4 CPU 1.60GHz
>> stepping        : 2
>> cpu MHz         : 400.000
>> cache size      : 256 KB
>> fdiv_bug        : no
>> hlt_bug         : no
>> f00f_bug        : no
>> coma_bug        : no
>> fpu             : yes
>> fpu_exception   : yes
>> cpuid level     : 2
>> wp              : yes
>> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pebs bts
>> sync_rdtsc
>> bogomips        : 3231.64
>> clflush size    : 64
>>
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> 
> Well after speaking to Asus I was told the specific proc I was using wasnt
> supported.  I qoute "you are lucky it boots up at all"  I then asked him if
> an another spare P4 that I had lying around would work.  Gave hime the
> Model/Prodcut # and he said Yea, that should work!
> 
> I said ok, ill try this....
> 
> Put it in, added some heat goo, put the fan back on,  Bios reads P4 3.2 Ghz
> (which is what it is) but the Freq. is 2.12Ghz!!! WTF, I think this board is
> just crap...suprizing coming from Asus.  They usally make quality stuff.
> Not on this one.
> 
> I guess I will deal with the OSD studder.  I really dont feel like putting
> $200 into this frontend for a new MB and/or Proc.  Just not work it to get
> rid of minor stutter.
> 
> 
> :(
> 
> Mitchell


If the bios allows you to change the multiplier, change it and see if that 
works, I have seen 20 of the same MB+CPU with the same bios, and had a few of 
them for no good reason improperly identify the cpu speed, but all worked fine 
if the speed was manually forced, and this was the vintage of CPU+MB you have, 
though I don't know if it was ASUS, but given that all use the same bioses and 
chipsets it is probably more related to that than the actual MB company.

Did they ask you for the MB serial number when they told you it did not support 
that cpu?    I have seen otherwise identical motherboards not support later cpus 
based on the MB serial number/revision, and I have also seen the MB's that don't 
"support" the newer cpus appear to work just fine with the newer cpus and a bios 
that does not prevent them from working, and this includes heavily loading the 
MB/CPU combination for several days under a stress test.

                                 Roger