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Weird disturbance on display during video playback

1943 Views 3 Replies Latest reply: Mar 25, 2008 3:56 PM by eurobum RSS
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Mar 11, 2008 4:44 PM
I'm running 10.5.1 on my 2 x 2.66 Mac Pro with 3 GB ram, but whenever I play Matroska-encoded 720p high-definition video files (using VLC) there is a horizontal line that runs all the way from the bottom to the top about every ten seconds, but it only does so on one particular display. The weird thing is my Macbook 2.2 GHz with 2 GB ram (also 10.5.1) does not do this on this display, and neither computer does so on my other display.

These are the displays:

- 37" LG LCD HD flatscreen tv (37LBR), connected via DVI-HDMI, 1080i, resolution 1360x768. This is the faulty one when connected to the Mac Pro (works with Macbook).

- 22" Samsung LCD monitor (SyncMaster 225bw), connected via DVI, resolution 1680x1050. This one is fine with both computers, same video files.

At first I thought it may have to do with Hertz, but when the Pro is connected to the LG, you cannot change the Hertz setting (locked at 60 Hertz) in System Preferences nor on the tv itself.

Also worth mentioning, when I run the same files on the faulty display via my PC, which is less powerful than the Pro, it works fine.

Any ideas?
Macbook, Mac Pro, Mac OS X (10.5.1)


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