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There is white noise on the audio out jack when I have an HDMI cable plugged in
For some reason the signal gets incredibly noisy when I have my Macbook Pro plugged into my HDTV via the HDMI cable. It's introducing audio interference where there normally is none.
I’m frustrated
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Inappropriate?UPDATE: This has fixed itself after restarting the machine. I can now run audio straight out of the jack with the HDMI cable plugged in with zero interference. My guess is that there were some noisy processes running that were zapped after the restart.
1 person says
this solves the problem
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Inappropriate?Any idea which processes would do that? -
Inappropriate?Alas, no.
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Inappropriate?I still have this problem even after rebooting. Might it be a 'bad' mini RCA jack I'm placing into the port? Should I buy another and try or is it something easier than that? And what about the optical audio ability? Can I plug in optical to HDMI? Radio shack have that? expensive?
I’m perplexed
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Inappropriate?i'm having a possibly related problem which includes the white noise issue but also there are problems with the external display itself. When I have my brand new macbook pro 15" plugged in with the mini displayport to dvi OR hdmi OR MDP->dvi->hdmi - I get intermittent problems as follows. After the computer goes to sleep and wakes up there are a variety of problems. Sometimes it recovers, sometimes it freezes and wont wake even after disconnecting the external monitor. Sometimes it cycles through black, blue and dithered looking screen in what looks like an attempt to match the display but it will do this endlessly. I may have finally gotten some success by using a mini displayport to rgb. But what is the point of having all this fancy and expensive hardware if we are back in analog RGB land?
And to the original problem of this thread - when I have an external monitor plugged in AND the audio jack plugged into my stereo - I get terrible noise on the audio line which ruins any movie watching experience. So basically this brand new MBP is useless for watching movies on my home entertainment system. Which is a real drag.
Ive been reading about problems similar to the 1st one but have yet to hear of the second one. Ive been trying every combination of adaptor and plug and power setting i can think of to troubleshoot this problem. I even have a 2 year old MBP with the older full dvi slot and it has none of these symptoms using the same external hardware and adaptors (excepting the mini displayport adaptor which obviously would not work with my older MBP)
Apple needs to step up to the plate and find a solution because external monitors are a must for many mac users. I have a full Apple Care plan along with my laptop all purchased only a month ago so im hoping that working with my local apple store will resolve these issues.
