[Ardour-Users] Strange ram/external sound card problem

Arnold Krille arnold at arnoldarts.de
Sun Sep 18 03:10:15 PDT 2011

On Saturday 17 September 2011 16:29:17 Harry van Haaren wrote:
> Total shot in the dark: You got 4 GB *more* right? So 6GB total...? 32 bit
> system..? No PAE kernel..?
> If all of that it could have to do with a 32 bit system not being able to
> handle more than 4GB of ram due to addressing...

A non-PAE-kernel will address and see only 3GB of ram.

> A PAE (Physical Address Extension) kernel would sort that out, or a 64 bit
> install if you feel that's less hassle..

With 32bit hardware (which PCI-hardware is) there is still the problem of 
memory-mapping. If the motherboard or the kernel-driver get this wrong, you 
are in trouble.

To see if the problem is related to the memory addressing, start your system 
with "mem=3G" as boot parameter. If the crackling is gone, you have your 

Have fun,

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