[pvrusb2] Poor analog picture on HVR-1950 after upgrade to 2.6.28 kernel

[Mike Isely]

FYI, here's the point when this problem was "fixed" last time:

http://www.isely.net/pvrusb2/history.html#pvrusb2-mci-20061119

That was over 2.5 years ago :-(

Still trying to characterize the extent of the problem this time...

  -Mike


On Fri, 12 Jun 2009, Mike Isely wrote:

> 
> I just managed to reproduce at least one of the symptoms!  Do this:
> 
> cat /sys/class/pvrusb2/*/ctl_resolution_hor/cur_val
> 
> What do you see?  720?  640?
> 
> The default value for that setting when the driver starts is 720.  But 
> if I change it to 640, then I get the color stripes.  If you see 640, 
> change it to 720 and try mplayer again.
> 
> For the record, ctl_resolution_ver/cur_val I have is 480.
> 
> It's entirely likely that MythTV is reprogramming the capture resolution 
> - because it's something you can easily do when setting up a profile AND 
> I believe the normal MythTV default for analog is 640!
> 
> This is looking more and more like the problem that I dealt with a 
> couple years ago.  Back then things were traced to an initialization 
> issue with the cx25840 module - I had to call an additional 
> unexpected entrypoint.  Obviously I'm going to go back and review that.
> 
> If we're having problems with cx25840 initialization again then it could 
> certainly also explain the video aspect distortions and cropping as 
> well.
> 
>   -Mike
> 
> 
> 

-- 

Mike Isely
isely @ isely (dot) net
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