Serpento

Q: 27" Cinema Display Sound Issues

My apologies for posting about an issue that has already been covered but I think it is important to highlight what seems to be a pervasive issue with this otherwise awesome display.

Like others, mine worked b-e-a-utifully out of the box. A few days into it however, the sound stopped. I have tried the "unplugging for 15 seconds" trick and it is a temporary fix. I also tried, at the suggestion of Apple Supports, restarting the computer and holding down the command, option, "r" and "p" keys simultaneously until you hear two beeps. That is also a temporary fix.

I want to echo the advise to call Apple Support every time this happens to ensure this issue gets the attention it deserves.

Apart from this very annoying issue, this is one sweet display. I watched Avatar on it the first night just to test it out. I only intended to watch a few minutes but ended up watching the whole thing. Terrific! Of course that was when the sound worked.

Mac Pro Intel, Mac OS X (10.6.4)

Posted on Oct 11, 2010 12:10 PM

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Q: 27" Cinema Display Sound Issues

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  • by Hollis_in_Oregon,

    Hollis_in_Oregon Hollis_in_Oregon Nov 30, 2010 1:36 PM in response to Serpento
    Level 1 (0 points)
    Nov 30, 2010 1:36 PM in response to Serpento
    Just want to say I'm having the same issue with my LED display. I love it other than this, but the sound issue is extremely annoying. I hope there's a patch soon!
  • by erikmh,

    erikmh erikmh Nov 30, 2010 1:53 PM in response to Serpento
    Level 1 (0 points)
    Nov 30, 2010 1:53 PM in response to Serpento
    I spoke with Apple customer service last week. The rep was very friendly, and was even willing to read over this discussion thread while I was on the phone with him. Neither he nor his supervisor had previously heard about the problem.

    When he found out that I was "still" on 10.6.4, however, he said to call him back if the problem recurred after I upgraded. I'll upgrade soon, of course, but it's clear from the other posts here that the OS version isn't germane.

    Anyway, I've mentioned this problem in reviews of the display at Amazon and at Small Dog, as well as in the "Apple Displays" section at Macintouch. Amazon dropped my link to this thread, but the other two have posted it.

    To my mind, it's pretty clearly a USB thing -- with the best-case scenario being a firmware patch for the monitor. The worst case, of course, would be that it's really a hardware problem -- meaning either a recall or an "ignoring" on Apple's part. Let's keep our fingers crossed....
  • by Mitch 751,

    Mitch 751 Mitch 751 Nov 30, 2010 7:55 PM in response to C Barclay
    Level 6 (11,544 points)
    Mac OS X
    Nov 30, 2010 7:55 PM in response to C Barclay
    Yes, it does come back.

    But interestingly, in my case the problems happened just after reading the BBC News website with a crash report.
  • by MrPles,

    MrPles MrPles Dec 1, 2010 10:34 AM in response to Serpento
    Level 1 (0 points)
    Dec 1, 2010 10:34 AM in response to Serpento
    All: AI is reporting the issue now (http://www.appleinsider.com/articles/10/12/01/usersexperience_sound_issues_with_apples_27_inch_cinemadisplay.html)
    please give it some traffic and leave a comment, so its getting some more attention.
  • by MrPles,

    MrPles MrPles Dec 1, 2010 11:41 AM in response to Serpento
    Level 1 (0 points)
    Dec 1, 2010 11:41 AM in response to Serpento
    now also at macnn: http://www.macnn.com/articles/10/12/01/problems.uniform.between.mac.windows/

    sorry for double post, but couldn't edit my previous post.
  • by etoledo,

    etoledo etoledo Dec 1, 2010 6:38 PM in response to Serpento
    Level 1 (0 points)
    Dec 1, 2010 6:38 PM in response to Serpento
    I am having the same issues with sound. It will work after I unplug the monitor and plug it back in. I am currently connected to a macbook air via usb and mini display port.
  • by theBigD23,

    theBigD23 theBigD23 Dec 1, 2010 8:00 PM in response to MrPles
    Level 1 (29 points)
    iOS Apps
    Dec 1, 2010 8:00 PM in response to MrPles
    Great to see AI reporting. I guess our emails to them helped. I also hope MacRumors can post. They also get a lot of visitors.
  • by Richard Pain,

    Richard Pain Richard Pain Dec 2, 2010 1:11 AM in response to MrPles
    Level 1 (20 points)
    Dec 2, 2010 1:11 AM in response to MrPles
    Interesting..I am using the mini dv connection - and the usb - on an 8 core Intel Mac Pro purchased March 2010 - but had no idea about the download for the display - so haven't installed it. I lost sound and had the same issues as others - dumped the audio plist in the main library/audio folder - and have been fine for a good three weeks now.
  • by vsw62,

    vsw62 vsw62 Dec 2, 2010 2:07 AM in response to Richard Pain
    Level 1 (0 points)
    Dec 2, 2010 2:07 AM in response to Richard Pain
    Which plist files do you mean? I do not have any plist files in /Library/Audio

    Do you mean the Audio plist files in /Library/Preferences?

    Regards
  • by Adam Arita,

    Adam Arita Adam Arita Dec 2, 2010 9:41 AM in response to Serpento
    Level 1 (30 points)
    Dec 2, 2010 9:41 AM in response to Serpento
    I have experienced this sound issue on 2010 Mac Mini Server, Mac Mini and MacBookPro 15 in, all running 10.6.5 and ACD Update 1.0.
  • by Eric.Anthony,

    Eric.Anthony Eric.Anthony Dec 3, 2010 12:37 AM in response to n47_eBee
    Level 1 (0 points)
    Dec 3, 2010 12:37 AM in response to n47_eBee
    question for you:
    just saw your post here looking at the problems with sound, i just got my ACD 27"
    today im waiting for my 5970 ati card to arrive, i have a 5870 now not using it on this system,on the 5970 if i go mini display out from 5970 to acd mini display port cable on the acd of course.....how good will my picture be can i go max?
    or should i go dvi out to minidisplay into monitor will that be better?
    thanks for the help, the cables are a little confussing im getting use to it as i go.
  • by Richard Pain,

    Richard Pain Richard Pain Dec 3, 2010 1:17 AM in response to vsw62
    Level 1 (20 points)
    Dec 3, 2010 1:17 AM in response to vsw62
    vsw62

    Quite right - I followed the advice by sw33t on page 8 of this thread on 11 November 2010 at 09.21 - as below:

    "This tip from another thread seems to have fixed my problem. It's been a few days now and everything is working fine.
    Delete the com.apple.soundpref.plist from the MAIN LIBRARY>PREFERENCES - (not the users library).

    Again, in the same MAIN LIBRARY>PREFERENCES folder, go into the AUDIO folder and delete com.apple.audio.DeviceSettings.plist and com.apple.audio.SystemSettings.plist (I am on 10.5 so I don't have this, if you don't, just omit)

    Restart (logging out doesn't work)"
  • by oliver22,

    oliver22 oliver22 Dec 3, 2010 9:31 AM in response to etoledo
    Level 1 (0 points)
    Dec 3, 2010 9:31 AM in response to etoledo
    After the second day of use from new, and sleeping overnight, there was no sound. After finding this discussion thread, and unplugging both the power and the display connector, the sound is back again. My fear is this is going to be a regular occurrence. Had I been aware of the extent of this problem before purchasing my display I likely wouldn't have do so, but now I have it it is too nice to want to send it back. Hopefully a solution will be forthcoming. My aluminium MacBook is an early 2009 version operating via the USB connection with the Cinema Display; seemingly 2010 MacBook Pros don't have the problem but it is a bit OTT to have to buy a new laptop to have a reliable Cinema Display.
  • by Sven G,

    Sven G Sven G Dec 3, 2010 10:35 AM in response to Serpento
    Level 1 (45 points)
    Dec 3, 2010 10:35 AM in response to Serpento
    BTW, they talk about the problem also on MacFixIt and Macity (an Italian website):

    http://reviews.cnet.com/8301-13727_7-20024314-263.html?tag=mncol;title

    http://www.macitynet.it/macity/articolo/Apple-LED-Cinema-Display-27-bug-audio/aA 47744

    Currently, I have a 24" Cinema Display (which works perfectly), and certainly will wait until this problem has been solved before I buy also a new 27" model.

    Hopefully, with all these discussions and articles on the web, Apple will fix the problem as soon as possible...
  • by Cinergy1111,

    Cinergy1111 Cinergy1111 Dec 3, 2010 10:36 AM in response to Sven G
    Level 1 (0 points)
    Dec 3, 2010 10:36 AM in response to Sven G
    Ditto. I also have a 24" that works perfectly and I want to purchase a 27", but not before this is resolved. Jobs?
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