[mythtv-users] HDMI issues
Seth Art
sethsec at gmail.com
Sun Aug 16 05:00:25 UTC 2009
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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