[mythtv-users] HDMI issues

[Seth Art]

Thanks for the reply Allen!  Unfortunately that didn't work.  Any
other ideas?  Anyone else?

Are there any tools I can use to help me diagnose this "flicker" that
occurs on the TV, but not the monitor?

-Seth


On Sun, Aug 16, 2009 at 10:27 AM, Allen
Edwards<allen.p.edwards at gmail.com> wrote:
>
>
> On Sat, Aug 15, 2009 at 10:00 PM, Seth Art <sethsec at gmail.com> wrote:
>>
>> Hey all,
>>
>> I have a problem that is not really related to MythTV, but I don't
>> even know where to start troubleshooting.  If anyone can point me in
>> the right direction, or point me to the right tools, I would certainly
>> appreciate it.
>>
>> Details:
>> TV: Sony Bravia KDL-40v4100
>> Video Card: Nvideo 5200 (DVI, VGA, S-Video out)
>> Cable: DVI to HDMI cable
>> OS: Latest MythDora (10.21)
>>
>> Problem:  I recently purchased a new TV (above), and a new DVI (video
>> card) to HDMI (TV) cable.  The problem is that when using this cable
>> the screen "flickers" black for about 1-2 seconds every 2-5 minutes.
>>
>> It seems to only do this when playing video, or viewing pictures in
>> slideshow mode.   I know it is not a MythTV issue, because I tried
>> playing a video with both Totem and Xine in standalone mode, and not
>> even full screen and the same problem occurs.  Interestingly even when
>> the video is playing on a quater of the screen, the entire screen goes
>> "blank/black" for that second or two.
>>
>> Troubleshooting: I hooked up my 24 inch BENQ HDMI monitor and played
>> the video for a good 10 minutes without any flickers.  That certainly
>> seems to rule out the cable and the video card, doesn't it?
>>
>> To me it seems that all that is left is: the Sony TV (please, no!) or
>> a X config issue.
>>
>> I tailed /var/log/messages, /var/log/Xorg.0.log, and even
>> /var/log/mythtv/mythfrontend.log to see if any messages popped up
>> right at the flicker point, but nope.
>>
>> I even tried to create a custom modeline. I cant remember the tool I
>> used to create the modeline (not in my history unfortunately), but
>> here it is, with the rest of my monitor section of the xorg.conf:
>>
>> Section "Monitor"
>>    Identifier     "Monitor0"
>>    VendorName     "Unknown"
>>    ModelName      "Unknown"
>>    HorizSync       28.0 - 33.0
>>    VertRefresh     43.0 - 72.0
>>    Option         "DPMS"
>>    # 1920x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 172.80 MHz
>>    Modeline "1920x1080_60.00"  172.80  1920 2040 2248 2576  1080 1081
>> 1084 1118  -HSync +Vsync
>> EndSection
>>
>> Does anyone have any ideas?  Where should I start troubleshooting?
>> Has anyone seen something similar?   Do you need more info?
>>
>> I should also note that when I use a VGA (video card) to VGA (TV)
>> there is no flicker at all.  The main drawback is that the picture is
>> noticeably less vibrant and less sharp.
>>
>> Thanks!
>>
>> Seth
>> _______________________________________________
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>> mythtv-users at mythtv.org
>> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>
> My suggestion is to take out as much of your xorg as possible and just let
> the box figure it out.  Don't be so helpful in telling it settings.  For
> example, here is my monitor section:
> Section "Monitor"
>         Identifier      "MythMonitor"
>         Option          "DPMS"
> EndSection
>
> Allen
>
>
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