[mythtv-users] Ivtv DMA errors

Jarod Wilson jcw at wilsonet.com
Mon Mar 29 04:10:30 EST 2004

On Mar 27, 2004, at 12:05, Ryan Brancheau (US) wrote:

> Fair enough.  Any recommendations?

Er, "Go get", not "Got get"... (Need... more... sleep...)

I'm rather partial to nForce2 boards, though they ain't cheap 
(relatively speaking -- my Tyan MP boards cost way more =). I love my 
Chaintech 7NIF2, no problems to speak of, and its not a VIA chipset! 
Though I never had any issues with my old KM266 board (MSI KM2M 
Combo-L) with dual ivtv tuner cards either, and my current secondary 
system is rock-solid (MSI KM4M-L, one very sparsely used M179). I think 
I paid about $100 for the 7NIF2, and about $60 for the KM4M (both from 
local shops). The nForce2 board does have the distinct advantage of NOT 
using a VIA chipset, so you can be pretty certain it won't have those 
DMA issues (both my VIA boards are fine, but YMMV). On the cheap and 
non-VIA, I've had good success with ECS K7S5A boards, which use a SiS 
chipset and retail for like $30 now.

> -----Original Message-----
> From: Jarod Wilson
> On Mar 26, 2004, at 15:33, Ryan Brancheau (US) wrote:
>> Okay, here's the situation:  I have been getting lockups and freezes
>> on my PVR-350 (but hey, who hasn't been?).  I've got an MSI 6378
>> micro-atx mobo with a VIA KLE-133 chipset, which I'm not sure is one
>> of the one's notorious for DMA problems, but it's probably just a
>> different rev of one of the one's that are.
[more snippage]
>> The first memory message happens every time ivtv loads, don't know if
>> this is part of the problem or how to disable it.  Any thoughts?
> The VIA 133-series chipsets are the worst offenders with ivtv, and even
> a PCI ATA card isn't a guaranteed fix, according to the ivtv wiki.
>> Just noticed that the PVR-350 is sharing IRQ 10 with the VGA, don't
>> know if that's a show-stopper or what...
> Shouldn't be, but you never know...
>> I also noticed that my integrated IDE seems to still be registering,
>> even though it is in fact disabled in the CMOS.
> Linux usually ignores the BIOS settings for ATA controllers, because so
> many boards have crappy/broken BIOSes...
>> I apologize for the length, but list users often complain about too
>> little information in initial posts so I thought I'd send everything
>> that seems relevant :)
> Better to give too much than too little, yes.
>> Any thoughts/suggestions would be greatly appreciated, even if it's
>> "go get a real motherboard".
> "Got get a real motherboard." ;-)

Jarod C. Wilson, RHCE

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