[mythtvnz] Green screen .. help please

Thu Jan 22 08:31:11 GMT 2009

Actually I lie, I had forgotten that I had installed the latest version of
the intel drivers direct from their website (version 2.5.99). I thought I
had tested it as working as I had restarted X and everything was fine. I had
forgotten that the build of the drivers installs kernel modules which
requires a re-start to run the new ones ..... doh ...

Also my CPU++ profile *was* using XVMC so it looks like XVMC above 720x568
doesn't work with these latest drivers.

I had upgraded to the latest drivers, because I wanted to see if support had
been added to use the hardware h.264 decoding ..... but it hasn't yet,
supposably it is happening any day.

Thanks for all your help.
Bernie

On Thu, Jan 22, 2009 at 9:04 PM, Bernard Mentink <bmentink at gmail.com> wrote:

> 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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