[mythtv-users] ME6000, PVR350, Myth(TV)ology, /dev/video0 I/O error

[bishop]

Torsten, Jarod, Thomas, Shawn, Everyone:

I was able to downgrade my ivtv drivers as well, and the pvr350 started 
behaving better immediately.

> # apt-get remove ivtv-kmdl-`uname -r`
> # rpm -Uvh http://download.atrpms.net/production/packages/fedora-1-i386/atrpms/ivtv-kmdl-2.4.22-1.2174.nptl_37.rhfc1.at-0.1.9-25.rhfc1.at.i586.rpm
>  # rpm -Uvh 
http://download.atrpms.net/production/packages/fedora-1-i386/atrpms/ivtv-0.1.9-25.rhfc1.at.i386.rpm

I then started in with the test_ioctl tests, and everything was just spiffy.

I've got a minor lag problem - choppy video, server hist 100% busy 
taping TV from the 350, that kind of thing - but I figure it's a smaller 
problem than the I/O error one, so I'm way more confident.  I owe a 
handful of people a lot of thanks, a big thanks to the community in 
general for being there and Jarod one extra for the walkthrough.  My 
ME6k looks great, and I'll be collecting the CSI in no time.

Quickly, though, I'll need some kind of innocent reason why the machine 
fails to tape any daytime dramas.  "Sorry, hon, dunno what happened. 
Wanna watch LasVegas instead?"  8-)

Now to get it netbooting and get a massive HDD for my dhcp server.

  - bish

Torsten Schenkel wrote:

> Am Di, den 30.03.2004 schrieb Ryan Brancheau (US) um 06:02:
> 
> 
>>I'm at my wits' end, almost.  I've followed every word of Jarod's
>>instructions to the letter, and I just don't have enough knowledge about
>>the situation to have any freakin' clue in the matter.
> 
> 
> Can't say anything about Jarod's guide and me6000/pvr350. I'm using
> debian (see sig) and get a very stable system out of this.
> 
> 
>>Jarod says:
>>
>>># cat /dev/video0 > /tmp/test_capture.mpg (ctrl-c to stop capture)
>>
>>and my machine says:
>>
>>>[root at otnemem root]# cat /dev/video0 > /tmp/test_capture.mpg
>>>cat: /dev/video0: Input/output error
> 
> 
> That's a common error, try doing as Jarod says:
> 
> 
>>No problem, Jarod says:
>>
>>>If you get the following error:
>>>cat: /dev/video0: Input/output error
>>>
>>>Run the following commands to reload the driver (this won't work for
>>
>>PVR-350 users if the ivtv-fb module is loaded -- see above):
>>
>>># /sbin/rmmod ivtv
>>># /sbin/modprobe ivtv
> 
> 
>>>Now try the capture again.
> 
> 
> And try it more than once, maybe there's even a (cold) reboot necessary.
> 
> 
>>Yet, my machine says:
>>
>>>[root at otnemem root]# /sbin/rmmod ivtv
>>>[root at otnemem root]# /sbin/modprobe ivtv [root at otnemem root]# cat 
>>>/dev/video0 > /tmp/test_capture.mpg
>>>cat: /dev/video0: Input/output error
> 
> 
> I have to do it up to 4 times, till the card comes up al right. Funny
> enough this rate goes down when using mythtv and not dd or cat. Maybe
> there has to be some initialisation to be done. Never tested it. Usually
> it's up on the second time, if not on the first.
> 
> 
> 
>>All this stuff is entirely new, purchased after my KT133-based system
>>seemed to suffer from typical DMA problems and I replaced that
>>overpriced 'silent' (ha!) Overture case and most of the stuff in it. 
>>The OS install is new and clean. 
> 
> 
> The Epia seems to be more prone to get this error, but on the other hand
> seems to be very immune to the other problems the pvr350 can have. The
> most problems with the ivtv driver look like race conditions and timing
> problems to me, so cpu and bus speed do definitely matter.
> 
> 
>>I think I need some encouragement to even continue to try, actually, as
>>I'm nearly in a state of mind that would result in my shiny new ME6000
>>unit being reduced into a pile of very small bits and lit on fire,
>>around which I'll be dancing like a navajo.
> 
> 
> Don't do it, send me the board, I'll send you some old hardware you can
> use in your rituals instead :-)
> 
> The Epia definitely is worth the trouble.
> 
> 
>>Judging by the traffic on
>>this list, there must be a million people on it.  There's gotta be one
>>guy who's successfully set up FC1 Myth on an ME6000 and a PVR350, one
>>guy who knows maybe what the hell I'm doing wrong.
> 
> 
> Not FC1. But it works. Try a vanilla kernel, redhat used to have
> backports from 2.6. and ivtv is a bit problematic with that. It works on
> 2.4 and it works on 2.6 but on a mixture, who knows. I use 2.4.23 and
> ivtv-0.1.10pre1. In combination with the ivtvdev X server (look at the
> ivtv list for the links) this is the best I had so far. Not what I'd
> call rock solid, but definitely usable by family (my paytv box had to be
> rebooted more often, I can even go on a business trip for a week and
> find it has recorded all my programmes without interference)
> 
> So it's possible. I don't know what's with fc1, but there are posts on
> this list with the same problem and related to some update of the ivtv
> packages. So you might want to try to compile it on your own. 
> 
> Take a look at my sig. But it's a bit outdated. The ivtv version is
> 0.1.10pre1 now and I'm using the ivtvdev X server.
> 
> HTH
> 
> Torsten
> 
> 
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