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

Mon, 23 Apr 2007 15:53:08 -0700

The driver I was referring to is ivtvdev, which you only need if you want X to be displayed on the tv. ivtv-fb is not a driver, but a module (if there is such a difference), although it is also required for X to be displayed on the tv (and I guess for any output through the 350).
But, anyway, after a couple more hours of fiddling: success! Loading a vesa framebuffer at boot switched the tv-out fb to /dev/fb1 (it was /dev/fb0 before) and now Mythtv (or should I say /dev/video16) passes on great quality picture to the tv! And with sound no less! 


One thing is still wrong, though... the onscreen stuff of Mythtv is not 
visible. So when I change channels, I don't see the name/number etc of 
the channel, I cannot see the menus, program guides, etc. I would like 
that, otherwise there's no real advantage watching tv through mythtv.



Situation now: mythtv is shown on the monitor, but when you say 'watch 
tv' it is switched to the tv (monitor goes blank, but with alt-tab I can 
run other programs)



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?


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] 
<mailto:[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
    
<https://help.ubuntu.com/community/MythTV_Feisty_hardware_pvr-350_TV-out#head-b95b766c73b58a224b1418e7d3a22d7ddad267bc>?

    On 4/22/07, *Paul van Gerven* <[EMAIL PROTECTED]
    <mailto:[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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