[mythtv-users] PVR350 TvOut test pattern works but...

Emmanuel Hislen hislen at mindspring.com
Wed Feb 11 03:17:50 EST 2004


I had very similar symptoms last week, who knows maybe your problem is 
also the same?

Check out /dev/video16:

ownership /rights
nature: it should be a character buffer and not a plain file, just like 
/dev/video0.

I had a plain file for video16 and had the same symptoms as you.


Emmanuel.

Jarod C. Wilson wrote:

> On Feb 10, 2004, at 21:54, <alanb at starband.net> wrote:
>
>> I've been running into this for the last week. I followed the 
>> instruction
>> on the TvOutHowto and just tonight followed the latest version of 
>> Jarod's
>> PVR 350 but I keep getting to the same impasse.
>>
>> It all works as expected. I get a test pattern with the insmod saa7127
>> enable_output=1 output_select=0 test_image=1. I then do the rmmod 
>> followed
>> by the insmod without the test_image=1 parameter. I set the 
>> test_ioctl -u
>> 0x3000 -p 4 (I have a tuner). I get a great capture that I can play with
>> mplayer. Sound and picture are both great via my monitor.
>>
>> I do the ivtvfbctl stuff followed by the dd if=/dev/video0 
>> of=/dev/video16
>> bs=64k. The screen is just blank at this point. When I ctrl-C out I get
>> output like:
>> 541+500 records in
>> 541+500 records out
>>
>> The numbers vary depending on how long I wait to ctrl-C.
>>
>> Where would I look to troubleshoot this? I've gone through this process
>> many times now with the same results. I've double checked the 
>> modules.conf
>> file. I've looked at output generated from some of the commands. I've
>> tried different /dev/videoX (where X = 1, 2, 3, 4, 8, 16, 32) for the 
>> of=
>> parameter. Everything looks okay but no TV out.
>>
>> My testing TV is not HDTV. It is just an ordinary Samsung 24" color.
>
>
> I'd start with /var/log/messages and /var/log/dmesg. See if anything 
> in there might indicate what might be going wrong. Nothing really 
> comes to mind here, since it "just worked" for me... :-\
>
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