[mythtv-users] Dual Hauppauge cards (150&500)

R. G. Newbury newbury at mandamus.org
Wed Mar 21 05:22:45 UTC 2007

Bill White wrote:
> --- "Mark A. O'Neil" <mark.a.oneil at Dartmouth.EDU>
> wrote:
>> Hi,
>> Before I rush off to the  ivtv list with this 
>> The difficulty I am having is that the system works
>> fine with just  
>> the PVR-150 (with remote - nice...) or with just the
>> PVR500, but not with /both/.
>> When both are in the system channel discovery fails
>> for almost all  
>> channels and all tuners are so snowy the image is
>> unrecognizable.
>> Here is the modprobe.conf file for when all three
>> are installed. I  
>> comment out the second and/or third ivtv line
>> depending on which  
>> single card is installed.

>> # ivtv modules setup
>> alias char-major-81 videodev
>> #150 only or 500 only
>> alias char-major-81-0 ivtv
>> #500 only or 500 with 150
>> alias char-major-81-1 ivtv
>> #500 with 150 only
>> alias char-major-81-2 ivtv

> Mark,
> I have a similar system to you, except I am running
> FC5 and have a PVR-250 and PVR-500...and mine works.
> :-/  I dunno if it will help, but here is my
> modprobe.conf.
> alias char-major-81 videodev
> alias char-major-81-0 ivtv
> alias char-major-81-1 ivtv
> alias char-major-81-2 ivtv

You might try physically installing one card at a time and running lspci 
--vv and dmesg against each to check on the tuner each has. It is 
possible that the cards have different tuner chipsets and require an 
'option tuner = ##' line, since ISTR that the different tuners 
have/require different firmware. Moreover from your description, your 
setup is never 'stable' in the sense that the PVR150 is always at 
/dev/video2 or /dev/video0. In my experience, computers are like 
sailboats and must be considered as feminine: the computer generally 
decides what she will 'see' first unless you are strict and stern with 
The latest ivtv build might not hurt either, if your setup allows...


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