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Thread: Black video with audio

  1. #21
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    Re: Black video with audio

    Quote Originally Posted by matt06 View Post
    You mentioned that this started after doing an update. Can you post the contents of /var/log/apt/term.log or history.log ??
    No problem, thanks for helping.
    Attached Files Attached Files

  2. #22
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    Ubuntu 10.04 Lucid Lynx

    Re: Black video with audio

    It appears that both MythTV and the NVidia driver were updated. I would try rolling back to your previous display driver.

    Also, your not being able to vnc into the machine leads me to believe there are some other things going on here, i.e., the problem lies somewhere other than Myth itself.
    MythTV BE: ECS A780GM-A, X2 240, 2GB, 40GB SSD, 2TB, (2)HVR-1600, Cable + OTA, 10.04 Server 64-bit, MythTV 0.25.3
    MythTV FE: P4M900-M4, Cel 2.0GHz, 1GB, 8400GS 512MB, 4GB CF, MCE, 12.04. FE2: AR3700, 4GB, 250GB, ION, MCE, 12.04

  3. #23
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    Re: Black video with audio

    Quote Originally Posted by matt06 View Post
    It appears that both MythTV and the NVidia driver were updated. I would try rolling back to your previous display driver.

    Also, your not being able to vnc into the machine leads me to believe there are some other things going on here, i.e., the problem lies somewhere other than Myth itself.
    should I apt-get purge nvidia-current?
    and then re-install nvidia-current or something else?

  4. #24
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    Ubuntu 10.04 Lucid Lynx

    Re: Black video with audio

    I'm not sure. If it was my box I wouldn't be afraid to try it, but I don't want to give bad advice either. I'd search the forums on how to do it...I don't run 10.10 so I'd just be guessing.
    MythTV BE: ECS A780GM-A, X2 240, 2GB, 40GB SSD, 2TB, (2)HVR-1600, Cable + OTA, 10.04 Server 64-bit, MythTV 0.25.3
    MythTV FE: P4M900-M4, Cel 2.0GHz, 1GB, 8400GS 512MB, 4GB CF, MCE, 12.04. FE2: AR3700, 4GB, 250GB, ION, MCE, 12.04

  5. #25
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    Re: Black video with audio

    Quote Originally Posted by matt06 View Post
    I'm not sure. If it was my box I wouldn't be afraid to try it, but I don't want to give bad advice either. I'd search the forums on how to do it...I don't run 10.10 so I'd just be guessing.
    I purged the nvidia-current, rebooted and re-installed...no luck.

    I also downloaded the lates Nvidia driver/script from the Nvidia web site and installed that...still no luck.


  6. #26
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    Re: Black video with audio

    The driver sourced direct from nVidia needs to be installed in a console login session with X server stopped.
    This method has build dependencies like kernel headers etc.
    It is not for the novice or faint-hearted but it is extremely well documented..Study the nVidia readme/docs..

    The main problem with this method is that your driver install is broken with every kernel update.

    There are a few 3rd party ppa with later versions of nVidia graphics drivers.

    Check your glx install:
    glxinfo | grep OpenGL
    check vdpau:
    qvdpautest
    vdpauinfo

    The last 2 may need to be complied..
    Last edited by BicyclerBoy; March 18th, 2012 at 08:04 PM.

  7. #27
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    Re: Black video with audio

    Quote Originally Posted by BicyclerBoy View Post
    The driver sourced direct from nVidia needs to be installed in a console login session with X server stopped.
    This method has build dependencies like kernel headers etc.
    It is not for the novice or faint-hearted but it is extremely well documented..Study the nVidia readme/docs..

    The main problem with this method is that your driver install is broken with every kernel update.

    There are a few 3rd party ppa with later versions of nVidia graphics drivers.

    Check your glx install:
    glxinfo | grep OpenGL
    check vdpau:
    qvdpautest
    vdpauinfo

    The last 2 may need to be complied..
    Yes, I did a ctrl+alt+F1, stopped GDM and installed the driver/script from the Nvidia website, but it didn't help, so I removed it.

    Code:
    $ glxinfo | grep OpenGL
    OpenGL vendor string: NVIDIA Corporation
    OpenGL renderer string: ION/PCI/SSE2
    OpenGL version string: 3.3.0 NVIDIA 260.19.06
    OpenGL shading language version string: 3.30 NVIDIA via Cg compiler
    OpenGL extensions:
    Code:
    $ qvdpautest
    qvdpautest: command not found
    $ sudo apt-get install qvdpautest
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    E: Unable to locate package qvdpautest
    Code:
    $ vdpauinfo
    vdpauinfo: command not found
    $ sudo apt-get install vdpauinfo
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    E: Unable to locate package vdpauinfo

  8. #28
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    Re: Black video with audio

    I think vdpauinfo is available in a ppa.

    Does the OpenGL version string match the driver version installed as reported by nvidia-settings ?
    Does it match with info in /var/log/Xorg.0.log ?

    You can always pick the previous kernel at grub..
    AFAIK The package managed nVidia driver installer inserts the nVidia kernel module into all the available kernel images..

    Can you change your mythtv video playback profile to non-vdpau & test?
    Do you have any additional parameters for VDPAU (i.e vdpaubuffers=nn)?

  9. #29
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    Re: Black video with audio

    Quote Originally Posted by BicyclerBoy View Post
    I think vdpauinfo is available in a ppa.

    Does the OpenGL version string match the driver version installed as reported by nvidia-settings ?
    Does it match with info in /var/log/Xorg.0.log ?

    You can always pick the previous kernel at grub..
    AFAIK The package managed nVidia driver installer inserts the nVidia kernel module into all the available kernel images..

    Can you change your mythtv video playback profile to non-vdpau & test?
    Do you have any additional parameters for VDPAU (i.e vdpaubuffers=nn)?

    I tried to boot to a previous kernel, but xwin didn't come up, I just got the black screen login. I tried the last 2 listed in the grub menu.

    vdpauinfo output attached.

    I don't think I see wht you are looking for to match in Xorg.0.log and nvidia-settings. Xorg.0.log attached.

    As I mentioned a couple of times, if I change to a non-vdpau playback profile, it plays just fine, it's just that the CPU and fan go nuts.

    I don't run anything special as far as extra parameters for VDPAU.
    Attached Files Attached Files

  10. #30
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    Re: Black video with audio

    I have an ION system running 10.04 and Myth 0.23 so I'll post what settings I have for my VDPAU playback profile (unsure of the NVIDIA driver version). It may not be until tonight/tomorrow that I have time to check though.
    MythTV BE: ECS A780GM-A, X2 240, 2GB, 40GB SSD, 2TB, (2)HVR-1600, Cable + OTA, 10.04 Server 64-bit, MythTV 0.25.3
    MythTV FE: P4M900-M4, Cel 2.0GHz, 1GB, 8400GS 512MB, 4GB CF, MCE, 12.04. FE2: AR3700, 4GB, 250GB, ION, MCE, 12.04

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