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Thread: vdpau black screen (monitor off) in mythTV

  1. #1
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    vdpau black screen (monitor off) in mythTV

    I have a nettop (Revo with ION) and if I enable vdpau in playback in mythbuntu, my monitor actually turns off. Any other non-vdpau playback profile works (some better than others), but the CPU goes crazy.

    I upgraded from Maverick to Natty and I still have the same issue. I was reading different things about Maverick, so I thought I would give the upgrade a try.

    I tried to install the nvidia ppa, but I think it's having issues. When I apt-get update, it gives a 404 error when it tries to hit that server. ppa:nvidia-vdpau/ppa

    I also tried the x-swat, which seems to update, but I still don't get the updated nvidia drivers.

    I have nvidia-current installed. However, it doesn't say what version it is in the "additional drivers" gui. In the Nvidia X Server Settings GUI, it references 304.43. I was hoping for 195 or 260 or one of the versions that people always talk about.

    Can someone help me figure this out? Please let me know what I can provide to assist in this.

    Thank you so much.

  2. #2
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    Re: vdpau black screen (monitor off) in mythTV

    Quote Originally Posted by davidstoll View Post
    I have a nettop (Revo with ION) and if I enable vdpau in playback in mythbuntu, my monitor actually turns off.
    At what point does it turn off? I assume you mean when you start to play a video, rather than at the point you change the setting?

    Is X actually crashing? Does the menus etc come back when the video stops playing?

    What do your frontend logs and X log (/var/log/Xorg.0.log) say at the point when the screen goes blank?
    Any other non-vdpau playback profile works (some better than others), but the CPU goes crazy.

    I upgraded from Maverick to Natty and I still have the same issue. I was reading different things about Maverick, so I thought I would give the upgrade a try.

    I tried to install the nvidia ppa, but I think it's having issues. When I apt-get update, it gives a 404 error when it tries to hit that server. ppa:nvidia-vdpau/ppa

    I also tried the x-swat, which seems to update, but I still don't get the updated nvidia drivers.

    I have nvidia-current installed. However, it doesn't say what version it is in the "additional drivers" gui. In the Nvidia X Server Settings GUI, it references 304.43. I was hoping for 195 or 260 or one of the versions that people always talk about.

    Can someone help me figure this out? Please let me know what I can provide to assist in this.

    Thank you so much.
    304.43 is the latest available from nvidia so don't expect downstream packagers to provide you with anything newer! However I am not sure why you want to go outside the version provided for your distro which would be 270.41 http://packages.ubuntu.com/search?ke...ll&section=all

    My lucid revo machines run 195.36 which works fine.

    To get your version of the drivers type
    Code:
    dpkg -l nvidia*

  3. #3
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    Re: vdpau black screen (monitor off) in mythTV

    Hi, nickrout, thanks for your help.

    X isn't crashing, the monitor just basically turns off (not just a simple black screen) when the video plays. If I stop the video, the mythtv menu comes back just fine. I can hear audio when the monitor shuts off.

    I don't really see anything new in /var/log/Xorg.0.log after I try to launch a video in mythtv. It shows this as the last entry, but I don't think it wasn't logged because of playing a video. Is it the right log?

    Code:
    [ 79124.780] (WW) NVIDIA(GPU-0): The EDID for VIZ XVT323SV (DFP-0) contradicts itself: mode
    [ 79124.780] (WW) NVIDIA(GPU-0):     "1920x1080" is specified in the EDID; however, the EDID's
    [ 79124.780] (WW) NVIDIA(GPU-0):     valid VertRefresh range (50.000-77.000 Hz) would exclude
    [ 79124.780] (WW) NVIDIA(GPU-0):     this mode's VertRefresh (24.0 Hz); ignoring VertRefresh
    [ 79124.780] (WW) NVIDIA(GPU-0):     check for mode "1920x1080".
    I would love to get 195.

    I didn't necessarily want a newer version of the nvidia driver, I just wanted vdpau to work...and I got a new version, which also didn't work.

    Code:
    $ dpkg -l nvidia*
    Desired=Unknown/Install/Remove/Purge/Hold
    | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
    |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
    ||/ Name                   Version                Description
    +++-======================-======================-============================================================
    un  nvidia-173-modaliases  <none>                 (no description available)
    un  nvidia-180-modaliases  <none>                 (no description available)
    un  nvidia-185-kernel-sour <none>                 (no description available)
    un  nvidia-185-libvdpau    <none>                 (no description available)
    un  nvidia-185-libvdpau-de <none>                 (no description available)
    un  nvidia-185-modaliases  <none>                 (no description available)
    un  nvidia-96-modaliases   <none>                 (no description available)
    ii  nvidia-common          0.2.30.1               Find obsolete NVIDIA drivers
    ii  nvidia-current         304.43-0ubuntu1~natty~ NVIDIA binary Xorg driver, kernel module and VDPAU library
    un  nvidia-current-dev     <none>                 (no description available)
    un  nvidia-current-modalia <none>                 (no description available)
    un  nvidia-libvdpau        <none>                 (no description available)
    un  nvidia-libvdpau-dev    <none>                 (no description available)
    un  nvidia-libvdpau-ia32   <none>                 (no description available)
    un  nvidia-libvdpau1       <none>                 (no description available)
    un  nvidia-libvdpau1-ia32  <none>                 (no description available)
    ii  nvidia-settings        304.43-0ubuntu1~natty~ Tool of configuring the NVIDIA graphics driver
    un  nvidia-vdpau-driver    <none>                 (no description available)

  4. #4
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    Re: vdpau black screen (monitor off) in mythTV

    I am not sure about that Xorg log entry, it looks like X is trying to change to 24fps and failing. Are you trying to play a 24fps video? The 79124.780 would tell me that this is quite some time after your machine started up (pretty sure that is 79000 seconds). That would be a funny time to be setting itself up.

    Look at Xorg.0.log before and after playing something and see if it changes - that'll tell you if that specific entry is related to playback or setup. Or you can tail -f /var/log/Xorg.0.log for a live performance. (Best way to do this is via ssh from another machine, preferably a laptop so you can sit on the sofa, play a video and observe your TV and the ssh session at the same time.)

    What about your frontend log at playback time?

  5. #5
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    Re: vdpau black screen (monitor off) in mythTV

    Quote Originally Posted by nickrout View Post
    I am not sure about that Xorg log entry, it looks like X is trying to change to 24fps and failing. Are you trying to play a 24fps video? The 79124.780 would tell me that this is quite some time after your machine started up (pretty sure that is 79000 seconds). That would be a funny time to be setting itself up.

    Look at Xorg.0.log before and after playing something and see if it changes - that'll tell you if that specific entry is related to playback or setup. Or you can tail -f /var/log/Xorg.0.log for a live performance. (Best way to do this is via ssh from another machine, preferably a laptop so you can sit on the sofa, play a video and observe your TV and the ssh session at the same time.)

    What about your frontend log at playback time?
    It seems that it keeps complaining about the 24fps issue. I'm playing a video that was recorded over the air. I even changed the refresh rate in the nvidia config gui to 24, rather than 60 or auto. Didn't help.

    Code:
    $ tail -n60 -f /var/log/mythtv/mythfrontend.log
    2012-09-17 22:05:00.872 TV: Attempting to change from None to WatchingPreRecorded
    2012-09-17 22:05:03.085 AFD: Opened codec 0xa190fea0, id(MPEG2VIDEO) type(Video)
    2012-09-17 22:05:03.085 AFD: codec AC3 has 6 channels
    2012-09-17 22:05:03.087 AFD: Opened codec 0xa1905030, id(AC3) type(Audio)
    2012-09-17 22:05:03.087 AFD: codec AC3 has 2 channels
    2012-09-17 22:05:03.089 AFD: Opened codec 0xa19055f0, id(AC3) type(Audio)
    2012-09-17 22:05:03.325 AO: Opening audio device 'plughw:CARD=NVidia,DEV=3' ch 2(6) sr 48000 sf signed 32 bit reenc 1
    2012-09-17 22:05:03.436 AudioPlayer: Enabling Audio
    2012-09-17 22:05:05.441 VDPAU: Created 2 output surfaces.
    2012-09-17 22:05:05.442 VDPAU: Version 1
    2012-09-17 22:05:05.442 VDPAU: Information NVIDIA VDPAU Driver Shared Library  304.43  Sun Aug 19 20:44:13 PDT 2012
    2012-09-17 22:05:05.442 VDPAU: Created VDPAU render device 1920x1080
    2012-09-17 22:05:05.818 Player(0): Forcing decode extra audio option on (Video method requires it).
    2012-09-17 22:05:06.369 Player(0): Video sync method can't support double framerate (refresh rate too low for 2x deint)
    2012-09-17 22:05:06.372 Player(0): Video timing method: USleep with busy wait
    2012-09-17 22:05:06.376 TV: Changing from None to WatchingPreRecorded
    2012-09-17 22:05:06.761 VDPAU: Added 2 output surfaces (total 4, max 4)
    2012-09-17 22:05:06.776 ALSA, Error: WriteAudio: buffer underrun
    2012-09-17 22:05:10.922 TV: Attempting to change from WatchingPreRecorded to None
    2012-09-17 22:05:11.062 VDPAU Painter: Clearing VDPAU painter cache.
    2012-09-17 22:05:11.062 MythPainter: 2 images not yet de-allocated.
    2012-09-17 22:05:11.243 TV: Changing from WatchingPreRecorded to None

  6. #6
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    Re: vdpau black screen (monitor off) in mythTV

    Well theres a couple of error messages there in the frontend log.

    There are 3 vdpau profiles by default, which are you using?

  7. #7
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    Re: vdpau black screen (monitor off) in mythTV

    Quote Originally Posted by nickrout View Post
    Well theres a couple of error messages there in the frontend log.

    There are 3 vdpau profiles by default, which are you using?
    I typically use "slim", but I've tried "normal" and (I think it's called) "high".

    Slim seems to work pretty well for my other installations in the past, so that's what it is on now (and during the log posts).

  8. #8
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    Re: vdpau black screen (monitor off) in mythTV

    I assume you mean "vdpau slim", not "slim" etc.

    What nvidia drivers are your other systems using?

  9. #9
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    Re: vdpau black screen (monitor off) in mythTV

    Quote Originally Posted by nickrout View Post
    I assume you mean "vdpau slim", not "slim" etc.

    What nvidia drivers are your other systems using?
    Yes, "vdpau slim".

    My other currenly running system is running 295.xx, but it is completely different hardware.

  10. #10
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    Re: vdpau black screen (monitor off) in mythTV

    Quote Originally Posted by davidstoll View Post
    Yes, "vdpau slim".

    My other currenly running system is running 295.xx, but it is completely different hardware.
    All i can think of is to:

    Try commenting out any entries you have in /etc/X11/xorg.conf

    and try again, then if that doesn't work revert back to your distro's default nvidia driver.

    Remove (or better comment out) all your ppa entries in /etc/apt/sources.list.d/

    sudo apt-get update && sudo apt-get upgrade

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