[vdr] Re: AW: Re: How to get the VDR box silent

[Stefaan Coddé <stefaan.codde@pandora.be>]

I want to use a console based system so no X-windows stuff.
VIA's drivers only run under X-windows.

Yes, Linux runs on the epia m9000 but it would be nice that 
all hardware could be used so also the mpeg2 decoder.
btw, I don't use a distro.
VDR runs fine on the current box (based on micro ATX mainboard)
but the CLE266 is still a big mistery.



Wolfgang Fritz wrote:

>What exactly is your problem? I am using a ME6000 (Via Eden 600 MHZ 
>processor) which works fine with SuSE 8.0, but with a stock 2.4.20 
>kernel (the original SuSE kernel did not know the VIA chipsets and 
>refused to enable IDE DMA).

>I did not test sound and the MPEG decoder up to now.

>>Stefaan Coddé wrote:

>> I've tested various setups to get to the most silent solution so 
>> including underclocking, watercooling and so on.
>> 
>> I'm at the stage of buidling the most silent version which consists 
>> out
>> of:
>> 
>>  - Via epia M9000 iTX board incl VIA C3 933Mhz
>>    (This processor ain't fast but fast enough for what it should do)
>>  - RCP300W fanless PSU from RSG electronics.
>>  - Maxtor harddisk 120GB
>>    (note : brand is not so important, even 7200rpm drives are silent
>> enough)
>>  - DVD or DVD-RW drive : not sure yet which one to pick.
>>  - Technotrend DVBs card, incl common access slots.
>> 
>> This setup is tested with windows as OS cause VIA's implementation 
>> towards Linux is still not what I expect of it.
>>  
>>  The case:
>> 
>>  I could not find a suitable commercial case so i'm buiding a new
one.  
>> It consists out of two huge heatsinks on each side. Bottom/top are of

>> 3mm thick aluminum, front/back of 5mm aluminium.  The C3 CPU is
cooled 
>> by a heatpipe which is connected to one of the heatsinks.
>>  The PSU is cooled by the other heatsink (the power supply uses an L
>> shaped
>>  cooling plate)
>>  The North bridge on the epia board (CLE266) is cooled by it's own
>> heatsink.
>> 
>>  Both top as bottom cover have many drilled holes for system cooling.

>> Indeed, this is an area that people intend to forget.  Hot air rises 
>> so give the hot air the oppertunity to leave the chassis.  The hot 
>> resistor on the DVBs card is replaced with a special cooled version 
>> (incl heatsink) and the heat caused by tuner and resistor can leave 
>> the chassis very easy.
>> 
>> Additional noise prevention:
>> 
>>  A DVD drive that runs at 1x speed is enough.. easy under windows  
>> with a tool like CDbremse but I still have to find a Linux solution.
>> 
>> Sytem noise could also be reduced by placing sort of cork structure. 
>> This means ; not by gueing plates to the chassis or on the sides of 
>> the IDE devices but randomly structures in the open space. Cork can 
>> absorb noise and the irregular structure also prevents forming 
>> standing waves in the chassis. The tricky part: the sound buffer may 
>> not have an impact on the cooling of the system and this is not easy.

>> There's one exception: the case may not vibrate but this is not a 
>> problem in this case due to the heavy construction.
>> 
>> note : My intentions where not creating the smalles unit but the most

>> silent unit. Box size is is the same as standard 19 inch used for
home 
>> sound devices.
>> 
>> Price : Signums futureclient is still much more expensive but this
unit
>>         will still be too expensive for most people.
>>         Biggest costs are for the 300W fanless PSU and the chassis.
>>         Followed by the VIA board/harddisk/ram
>> 
>> Project finish expected around end februari cause I still don't know 
>> if I should add a small LCD screen in the front cover.
>> 
>> I'll create a website that describes the entire project oh and... id 
>> someone is looking for a weter cooling setup, I'm selling one.
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