[ivtv-users] HVR 1600 and NVidia again

[Scott Harris]

Andy Walls wrote:
> On Sat, 2009-01-31 at 21:05 -0800, Scott Harris wrote:
>> Andy Walls wrote:
> 
>>> So all that's nice, but what to do?
>>>
>>> 1. With the HVR-1600 installed, you could try:
>>>
>>> 	a. unload the nvidia module(s)
>>> 	b. manually fixup the PCI-AGP bridge and Nvidia device BARs
>>> 	   with setpci
>>> 	c. reload the nvidia module
>>>
>>> Good luck.
>>>
>>> Andy
>>>
>> I can't tell you how much I appreciate you taking the time to delve that
>> deeply into the issue.  It is really greatly appreciated.
>>
>> I was able to spend 2-3 hours on this issue today between the kids naps.
>> Good news and bad news.  The good news is I now have everything working.
> 
> Good.
> 
>> The bad news is it had nothing to do with any of the suggestions above ;)
> 
>> If you can't tell I was avoiding #1 as I've never done that before
>> I figured it would take a long time to learn.
> 
> I would have started with that.  It's actually the most deterministic as
> you are in full control.  Yes the learning curve would have taken more
> time, but you spent a lot of time anyway... ;)

Yeah, in the end I'll take the time to learn it, but I'm sure you know
with kids any time you get to mess around with the computers is precious.

> 
> 
>> So spent 30 minutes digging out the manual from the moving boxes and
>> started reading through and happened to notice "AGP aperture size" in
>> the bios.  Hmmmmm I said.  I check the current setting and it was at
>> 128M.  I boosted up to 256M and rebooted and now everything works great
>> without and extra kernel command like options.
> 
> 
> Right, but if you add or remove a card from your system (or enable
> disbale other devices in your BIOS) your problem has a good chance of
> returning.

I'm likely to see this sooner rather than later as I'd like to add a 2nd
1600 to this machine now that I've demonstrated to myself that they work.

> 
> The AGP aperature size is the window size set on the CPU-PCI host bridge
> into main memory.  It is not the size of the window set on the PCI-AGP
> bridge.  However, since that PCI-AGP bridge window was misaligned by
> 128M, by bumping up some other window by 128M, you pushed the alignement
> of all the other windows that get set after it by 128M.
> 
> So again, I'm glad it worked, but realize if you change hardware
> configuration, thus changing device memory windows, the problem will
> likely resurface.  Now would be a good time to learn how to use setpci
> and write down some notes. :)

Point taken.  I'll spend the necessary time now that I have something
at least working.  Always a good thing to have more knowledge.

> 
> 
>> Again, Andy, I can't tell you how much I appreciate you spending the
>> time on such minute details.  I really do appreciate it.
> 
> You're welcome.  I didn't spend a lot of time.  I was mosty taking kids
> to birthday parties and horseback riding lessons yesterday.  Ah the days
> when they take naps are gone for me...
> 

And I bet so are the days of potty training and moving into big boy
beds ;) which is what we spent the rest of the weekend and this week
doing, hence my late reply.


Thanks again for all the help, really appreciated.
Scott