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

[Mike Isely]

On Fri, 12 Jun 2009, fivenote wrote:

> Mike,
> 
> I checked cat /sys/class/pvrusb2/*/ctl_video_standard/cur_val and it
> always read "none".
> 
> To clarify...
> 
> When I run mplayer, I get color picture , but cut-off on the right.
> When I run mythtv I get vertical lines, faded color (almost B/W), and
> cut-off on the right.
> 
> In both players then video standard reads "none".
> 
> -vincent

Whoops.  That's not right!  I would have expected NTSC-M for you.

Things to try (leave mythtv out of this for now, in fact make sure the 
mythtv backend is not running when trying this):

1. Do cat /sys/class/pvrusb2/*/ctl_video_standard/enum_val - that should 
give you a long list of possible video standards.  Tell me what that 
shows.

2. Do echo "NTSC-M" >/sys/class/pvrusb2/*/ctl_video_standard/cur_val - 
that should force things to NTSC for you.  You'll need to do ths one as 
root.

After #2, cat the cur_val back and verify that the setting "took".  If 
it did, try mplayer again and see if things are any better.

Even if all of the above works, we still need to figure out why it 
started with "none", but that should be a relatively easy thing to 
understand (with the help of some other debug flags).

  -Mike

-- 

Mike Isely
isely @ isely (dot) net
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