[mythtvnz] Green screen .. help please

Thu Jan 22 08:04:46 GMT 2009

Hi Simon,

I have checked my TV playback settings, and it was using the CPU++ profile,
which uses quartz and XV, I wasn't using XVMC unless it was set at different
layer, like you say the Intel driver, but I am using the stock driver out of
the distro, so puzzling. I will try another version of the driver and get
back to you ... in the meantime I have set MythTV to use opengl, so the
kidies can watch TV.

Thanks,
Bernie

On Thu, Jan 22, 2009 at 8:31 PM, Simon Cantem <scantem at gmail.com> wrote:

>
> I don't know why but I could have sworn you said you have a Nvidia video
> card (I re-read your email and know you didn't!) :)
>
> My HTPC has an Intel x3100 graphics card running Ubuntu 8.10 - the driver
> seems to be OK for me. I'm having trouble finding any information on the
> error you describe, the closest I can find is this:
> http://www.mythtv.org/wiki/XvMC#Intel
>
> (Revised May 9, 2008) (Further revised August 25, 2008: It appears that
> xvmc only works for frames less than 720x568 in size. For larger frames,
> xvmc
> appears to work, but the picture is a bright monochrome green, like night
> vision goggles.)
>
> But for that to happen you would have had to recompile the Intel driver for
> xvmc, which I'm assuming you haven't done.
>
>
> Only other thing I can think to try is booting off a Live CD and see if it
> happens, compare the driver and try to down/upgrade to that version.
>
>
>
>
> On Thu, Jan 22, 2009 at 7:09 PM, Bernard Mentink <bmentink at gmail.com>wrote:
>
>> Hi Simon,
>>
>> That command results in:
>>
>> Found Xv 2.2
>> X Error of failed request:  BadMatch (invalid parameter attributes)
>>   Major opcode of failed request:  140 (XVideo)
>>   Minor opcode of failed request:  14 ()
>>   Serial number of failed request:  11
>>   Current serial number in output stream:  11
>>
>> Looks like I am having issues with XV.
>>
>> By the way, this box has the Intel G45 chipset, don't know how to get the
>> latest drivers for that as they are included in the kernel. I am reluctant
>> to try a new kernel that hasn't been released by ubuntu.
>>
>> Cheers,
>> bernie
>>
>>
>>
>>
>> On Thu, Jan 22, 2009 at 6:38 PM, Simon Cantem <scantem at gmail.com> wrote:
>>
>>> Hi Bernie,
>>>
>>> If you're still running the 173 drivers this sounds like maybe it's
>>> related to the problem you're having:
>>>
>>>
>>> https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-173/+bug/199975
>>>
>>> I'm running 177 on a 9600GT without any problems, maybe give the new
>>> drivers a try if you can.
>>>
>>> Another thing to try is checking your hue:
>>>
>>> $ sudo apt-get install xvattr
>>> $ xvattr -a XV_HUE
>>> Found Xv 2.2
>>> XV_HUE = 0
>>>
>>> if that returns anything other than 0, try doing the following command
>>> and it should set it to zero:
>>>
>>> $ xvattr -a XV_HUE -v 0
>>> Found Xv 2.2
>>> XV_HUE set to 0
>>>
>>> Cheers,
>>> Simon
>>>
>>>
>>>
>>>
>>> On Thu, Jan 22, 2009 at 6:22 PM, Bernard Mentink <bmentink at gmail.com>wrote:
>>>
>>>> Hi Simon,
>>>>
>>>> An update: I tried xine with xv output, and still the green screen,
>>>> however with opengl output the color is fine. I will try and narrow the
>>>> issue by trying other outputs in xine as well ..
>>>>
>>>> Cheers,
>>>> bernie
>>>>
>>>>
>>>> On Thu, Jan 22, 2009 at 5:09 PM, Simon Cantem <scantem at gmail.com>wrote:
>>>>
>>>>> Are you running the latest nvidia binary drivers or the open source
>>>>> drivers? If you're running the nvidia drivers try changing to a different
>>>>> version to see if that makes a difference:
>>>>>
>>>>> System -> Hardware Drivers - select a nvidia driver and hit either
>>>>> activate
>>>>>
>>>>> It sounds like there's a problem with the overlay rendering which is
>>>>> used to accelerate the video rendering. To confirm it you could try running
>>>>> Xine and setting the video output to X11, that'll turn off any acceleration.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Jan 22, 2009 at 4:23 PM, Bernard Mentink <bmentink at gmail.com>wrote:
>>>>>
>>>>>> Hi Simon,
>>>>>>
>>>>>> I tried playing a DVD with VLC, still shows a green screen ..
>>>>>>
>>>>>> Thanks,
>>>>>> Bernie
>>>>>>
>>>>>>
>>>>>> On Thu, Jan 22, 2009 at 4:14 PM, Simon Cantem <scantem at gmail.com>wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> It sounds like maybe your video driver got updated and it doesn't
>>>>>>> like it anymore. What happens if you playback a DVD or an AVI file through
>>>>>>> something like Xine or mplayer, do you still get the green screen?
>>>>>>>
>>>>>>> Simon
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Jan 22, 2009 at 4:07 PM, Bernard Mentink <bmentink at gmail.com
>>>>>>> > wrote:
>>>>>>>
>>>>>>>> Hi All,
>>>>>>>>
>>>>>>>> I have been running Mythbuntu quite successfully for some time,
>>>>>>>> however the last time I re-booted the machine, I have found that whenever I
>>>>>>>> play a recording or watch LiveTV all I get is a green screen, I can see the
>>>>>>>> program content ... it just all green.
>>>>>>>>
>>>>>>>> (There may have been some recent updates ... and this is the 1st
>>>>>>>> time I have re-booted since ..)
>>>>>>>>
>>>>>>>> It doesn't seem to be Xorg, the Plasma, or the nVidia driver as I
>>>>>>>> can use it fine as a normal computer in full color, it is only when I am
>>>>>>>> using Mythtv for recordings (that previously were fine in full color) or
>>>>>>>> LiveTV that I get the issue.
>>>>>>>>
>>>>>>>> It seems the video decoding is broken for some reason.
>>>>>>>>
>>>>>>>> Can anyone tell me what to do to resolve this? This is urgent for
>>>>>>>> me, as the family rely on this system now  (read ... I am dead meat ..)
>>>>>>>>
>>>>>>>> Cheers,
>>>>>>>> Bernie
>>>>>>>>
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