Re: [ivtv-users] Black screen on top of TV-out (Ubuntu, PVR-350)

Tue, 24 Apr 2007 21:48:33 -0700 

On Apr 23, 2007, at 5:06 PM, Paul van Gerven wrote:
Situation I'd like: mythtv (menu's, recordings, live tv etc) is always shown on the tv. Does that require getting X to be displayed through the 350's tv-out? 


Some people have tried getting MythTV to output directly to the  
framebuffer using a special QT framework (Qt/Embedded & directfb?):


        http://mythtv.org/wiki/index.php/MythTV_in_Framebuffer

But to my knowledge not been able to make it work 100%...

So, Yes, it does require X on the TV-out.

It works very well - you can then watch media in various different  
codecs (XviD, etc) - but anything other than MPEG2 will require  
additional CPU power.


- Rick



Matt Andruff wrote:

I'm not sure what step of the howto you followed upto.  It seems  
to me you probably finished the whole thing....


Their are some different configurations I need to add to the howto.

You can have your TV as the whole mythbox:

You can have myth on a monitor and playback on TV.


If you want to use mythtv to output to the tv and you want myth to  
be on your screen, you do not need to make any changes to  
xorg.conf.  Infact you should undo any changes and I believe that   
will remove the black box from your screen.



If You dowant to get mythtv on the TV but right now I'm not sure  
if that's what you want.



You say "(that would require a driver that I did not install). "  
but I'm not sure what driver that is are you talking about "ivtv-fb"?



On 4/22/07, Paul vano Gerven < [EMAIL PROTECTED]> wrote:

No, I am not running X on the TV (that would require a driver that  
I did not install). X is displayed on my monitor, but a terminal,  
I think it is tty1, is displayed on my tv. The terminal stays  
there when I put MythTV's output on the TV. So I can see the TV- 
images around the edges, but most of the screen's surface is being  
blocked by the black square (=the terminal).



Incidentally, when I try to follow the steps to actually display X  
on my TV (in Matt's link below), I get stuck in the first step.  
modprobe ivtv-fb does NOT results in the suggested entries in /var/ 
log/syslog... it does not result in any entry.


Any ideas?

Paul

Matt Andruff wrote:

so you have X on your tv out.(awesome) your just having issues  
with playbacK in Myth? Have you taken the step to enable playback  
on tv in Myth?


On 4/22/07, Paul van Gerven <[EMAIL PROTECTED] > wrote:

I have been struggling to get my TV-out working on ivtv  
(installed on Ubuntu Feisty). Mythtv works fine, so ivtv is  
installed correctly. (I can use my 'other' TV-output which  
converts VGA to Composite. The quality of this picture is  
acceptable, but not great; I know the 350's TV-out is much better).


I can give the following information:


1) As soon as I connected the TV-out cable to the 350 and the TV,  
I got a black screen on the TV. This means it is sending a  
signal, because the screen is blue when the TV is not getting any  
signal at all.


2) I live in Europe, and need a PAL(-B/G) signal.

3) I played around with some old (!) information from


http://ivtv.writeme.ch/tiki-index.php?page=TvOutPal and http:// 
ivtv.writeme.ch/tiki-index.php?page=TvOutHowto



which instructs what lines to add to /etc/modprobe.d/aliases (I  
think thats the Ubuntu equivalent of /etc/modules.conf). Long  
story short, some combination of lines (which I cannot remember  
and have not been able to reproduce) gave a crystal clear TV- 
output with MythTV (which I set up to use /dev/video16). However:  
no sound and no overlay (for example, when I activated the  
program guide, it would not appear on the screen).



I remember examining the output of dmesg and it seemed the lines  
I was adding to aliases contained syntaxes that were not (or no  
longer) recognized. Which line/command was the magic one to  
enable the TV-out, I cannot tell.


4) I restored my original aliases file, but added


install ivtv /sbin/modprobe --ignore-install ivtv; /sbin/modprobe  
ivtv-fb


as suggested in



http://www.mythtv.org/wiki/index.php/IVTV_Install


and updated the modules and rebooted. By chance I noticed some  
text flashing on the TV while rebooting! Now, If I press cntrl- 
alt-f1 my monitor goes blank and I see the terminal on the TV.  
Also when booting into recovery mode, I see the messages floating  
by on my monitor until it hits ivtv0-fb, after which the output  
switches to the TV.



In this situation, when I watch TV on MythTV, I get a black  
screen with the terminal covering almost all of the screen. Only  
at the edges I see a TV-picture. Also, still no sound.



5) When I do: sudo rmmod saa7127, the tv-screen goes blue, as  
expected.


6) Current output of dmesg:


[   16.543497] ivtv:  ==================== START INIT IVTV  
====================

[   16.543500] ivtv:  version 0.10.1 (tagged release) loading

[   16.543501] ivtv:  Linux version: 2.6.20-15-generic SMP  
mod_unload 586
[   16.543503] ivtv:  In case of problems please include the  
debug info between
[   16.543504] ivtv:  the START INIT IVTV and END INIT IVTV  
lines, along with
[   16.543506] ivtv:  any module options, when mailing the ivtv- 
users mailinglist.

[   16.543793] ivtv0: Autodetected Hauppauge card (cx23415 based)

[   17.215564] ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144  
bytes)
[   17.237366] ivtv0: loaded v4l-cx2341x-dec.fw firmware (262144  
bytes)

[   17.464035] ivtv0: Encoder revision: 0x02050032
[   17.464037] ivtv0: Recommended firmware version is 0x02060039.
[   17.472094] ivtv0: Decoder revision: 0x02020023
[   17.540695] ivtv0: Autodetected Hauppauge WinTV PVR-350
[   17.561657] tuner 0-0043: chip found @ 0x86 (ivtv i2c driver #0)
[   17.566192] tuner 0-0061: chip found @ 0xc2 (ivtv i2c driver #0)

[   17.632573] saa7115 0-0021: saa7115 found (1f7115d0e100000) @  
0x42 (ivtv i2c driver #0)
[   17.873437] saa7127 0-0044: saa7129 found @ 0x88 (ivtv i2c  
driver #0)
[   17.901274] msp3400 0-0040: MSP4418G-B3 found @ 0x80 (ivtv i2c  
driver #0)
[   17.901358] ivtv0: Registered device video0 for encoder MPEG  
(4 MB)
[   17.901473] ivtv0: Registered device video32 for encoder YUV  
(2 MB)

[   17.901601] ivtv0: Registered device vbi0 for encoder VBI (1 MB)

[   17.901649] ivtv0: Registered device video24 for encoder PCM  
audio (1 MB)

[   17.901805] ivtv0: Registered device radio0 for encoder radio

[   17.901825] ivtv0: Registered device video16 for decoder MPEG  
(1 MB)

[   17.901863] ivtv0: Registered device vbi8 for decoder VBI (1 MB)
[   17.902132] ivtv0: Registered device vbi16 for decoder VOUT

[   17.902152] ivtv0: Registered device video48 for decoder YUV  
(1 MB)
[   17.976424] ivtv0: loaded v4l-cx2341x-init.mpg firmware  
(155648 bytes)

[   18.463544] ivtv0: Initialized Hauppauge WinTV PVR-350, card #0

[   18.463552] ivtv:  ====================  END INIT IVTV   
====================
[   18.490481] ivtv0-fb: Framebuffer at 0xf5510000, mapped to  
0xfa390000, size 1665k

[   18.565743] ivtv0-fb: === Validated display mode  ===

[   18.565745] ivtv0-fb: Display size 640x480 (640x480 Virtual) @  
8bpp

[   18.565746] ivtv0-fb: Display position 41,49
[   18.565747] ivtv0-fb: Display filter : on
[   18.565748] ivtv0-fb: Color space : RGB
[   18.590694] ivtv0-fb: === Display mode change ===

[   18.590697] ivtv0-fb: Display size 640x480 (640x480 Virtual) @  
8bpp

[   18.590699] ivtv0-fb: Display position 41,49
[   18.590701] ivtv0-fb: Display filter : on
[   18.590702] ivtv0-fb: Color space : RGB
[   18.614861] ivtv0-fb: Framebuffer registered on ivtv card id 0
[   43.551436] ivtv0-fb: === Validated display mode  ===

[   43.551439] ivtv0-fb: Display size 640x480 (640x480 Virtual) @  
8bpp

[   43.551440] ivtv0-fb: Display position 41,49
[   43.551441] ivtv0-fb: Display filter : on
[   43.551442] ivtv0-fb: Color space : RGB
[   43.559209] ivtv0-fb: === Display mode change ===

[   43.559212] ivtv0-fb: Display size 640x480 (640x480 Virtual) @  
8bpp

[   43.559214] ivtv0-fb: Display position 41,49
[   43.559216] ivtv0-fb: Display filter : on
[   43.559217] ivtv0-fb: Color space : RGB




I am getting very close to a solution, but after many hours of  
googling and reading I am kind of stuck here. The documentation  
on this is mostly outdated, I feel. Any help would be greatly  
appreciated (as in... I'll do your chemistry homework ;) )


Regards,

Crakie

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--Ultimate is my Mistress
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-- However, if sexualizing Ultimate as a female offends you please 
-- read the above line as:  "Sometimes a Cigar is Just a Cigar"

--

-- Alternatively if Phalic nature of Cigar offends you. 
-- and you insist on attributing gender issues to my attempts at  
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-- Please read the signature as:
-- Ultimate is my Lover (possibly Male or Female but neither implied)
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