AirPlay Screen Mirroring (Mavericks) disconnects frequently with "Feedback taking too long to send" message

Question

Level 1

7 points

AirPlay Screen Mirroring (Mavericks) disconnects frequently with "Feedback taking too long to send" message

My company has several TVs with AppleTVs (3rd generation units) connected in our conference rooms so we can "Screen Mirror" our Mac laptops via AirPlay during meetings. Many employees have complained that AirPlay Screen Mirroring drops frequently during meetings for no apparent reason.

In attempts to determine the cause of the issue, I removed the AppleTV units from Wi-Fi and hard-wired them all to the LAN (100Mbps/Full duplex, no switchport errors seen on the Cisco switch). I upgraded the AppleTVs to the latest firmware. I had our AppleTV users ensure they were running MacOS Mavericks with the latest software updates installed. I had the Mac laptops hard-wired into the LAN during meetings in the conference rooms. None of these changes resolved the AirPlay issue.

I reviewed the MacOS "/var/log/system.log" file from the laptops of several users that reported issues. I found a pattern that seemed to indicate that the "coreaudiod" process reported "Feedback taking too long to send" several times before the AppleTV connection was terminated. Also, from a network trace (using "tcpdump") taken during an unexpected AirPlay Screen Mirroring disconnection, I could see that the Mac laptop sent a TCP FIN packet to the AppleTV unit (this would indicate that the MacOS laptop initiated the closing of the AirPlay connection).

I have included the relevant log file entries below. Please note that the LAN internal to our company is "solid" and there have been no connectivity issues detected or reported during the times the AirPlay sessions were disconnected.

I believe I have found a workaround to this issue. By going into "System Preferences", "Sound" and then changing the "Output" device BACK to the "Internal Speakers" (rather than the AirPlay destination), the AirPlay Screen Monitoring connection seems to remain stable.

My questions are:

- is anyone else experiencing this type of problem? any other solutions recommended?

- is there a way to change the AirPlay defaults so that Screen Mirroring only sends the video (not audio)?

- does anyone know what the log file entries indicate (like, what does "Feedback taking too long to send...." mean)?

- any fix planned for this issue?

From: "/var/log/system.log":

Jan 16 10:50:16 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:16.454404 AM [AirPlay] ### Feedback taking too long to send (1 seconds, 1 total)

Jan 16 10:50:18 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:18.524517 AM [AirPlay] ### Feedback taking too long to send (4 seconds, 2 total)

Jan 16 10:50:20 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:20.533639 AM [AirPlay] ### Feedback taking too long to send (6 seconds, 3 total)

Jan 16 10:50:22 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:22.548168 AM [AirPlay] ### Feedback taking too long to send (8 seconds, 4 total)

Jan 16 10:50:24 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:24.554522 AM [AirPlay] ### Feedback taking too long to send (10 seconds, 5 total)

Jan 16 10:50:24 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:24.554809 AM [AirPlay] ### Report network status (3, en0) failed: 1/0x1 kCFHostErrorHostNotFound / kCFStreamErrorSOCKSSubDomainVersionCode / kCFStreamErrorSOCKS5BadResponseAddr / kCFStreamErrorDomainPOSIX / evtNotEnb / siInitSDTblErr / kUSBPending / dsBusError / kStatusIsError / kOTSerialSwOverRunErr / cdevResErr / EPERM

Jan 16 10:50:26 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:26.545531 AM [AirPlay] ### Feedback taking too long to send (12 seconds, 6 total)

Jan 16 10:50:28 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:28.559050 AM [AirPlay] ### Feedback taking too long to send (14 seconds, 7 total)

Jan 16 10:50:30 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:30.628868 AM [AirPlay] ### Feedback taking too long to send (16 seconds, 8 total)

Jan 16 10:50:32 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:32.655638 AM [AirPlay] ### Feedback taking too long to send (18 seconds, 9 total)

Jan 16 10:50:34 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:34.641952 AM [AirPlay] ### Feedback taking too long to send (20 seconds, 10 total)

Jan 16 10:50:36 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:36.659854 AM [AirPlay] ### Feedback taking too long to send (22 seconds, 11 total)

Jan 16 10:50:38 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:38.653594 AM [AirPlay] ### Feedback taking too long to send (24 seconds, 12 total)

Jan 16 10:50:40 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:40.659279 AM [AirPlay] ### Feedback taking too long to send (26 seconds, 13 total)

Jan 16 10:50:42 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:42.745549 AM [AirPlay] ### Feedback taking too long to send (28 seconds, 14 total)

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.532853 AM [AirPlay] ### Endpoint "AppleTV" feedback error: -6722/0xFFFFE5BE kTimeoutErr

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.533151 AM [AirPlay] ### Feedback failed: -6722/0xFFFFE5BE kTimeoutErr

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.533273 AM [AirPlay] ### Error with endpoint "AppleTV": -6722/0xFFFFE5BE kTimeoutErr

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.533427 AM [BonjourBrowser] Reconfirming PTR for AppleTV._airplay._tcp.local. on en0

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.533588 AM [BonjourBrowser] Reconfirming PTR for 9C207BBD8EA1@AppleTV._raop._tcp.local. on en0

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.533839 AM [AirPlay] ### AirPlay report: Network dead for 10+ seconds after 159 seconds, screen, nm "AppleTV", tp WiFi, md AppleTV3,1, sv 190.9, rt 0, fu 0, rssi -54

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.534104 AM [AirPlay] ### Report network status (5, en0) failed: 1/0x1 kCFHostErrorHostNotFound / kCFStreamErrorSOCKSSubDomainVersionCode / kCFStreamErrorSOCKS5BadResponseAddr / kCFStreamErrorDomainPOSIX / evtNotEnb / siInitSDTblErr / kUSBPending / dsBusError / kStatusIsError / kOTSerialSwOverRunErr / cdevResErr / EPERM

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.534315 AM [AirPlay] Deactivating virtual display stream for quiesce

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.543682 AM [AirPlayScreenClient] Stopping session

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.543815 AM [AirPlay] Quiescing endpoint 'AppleTV'

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.543907 AM [AirPlayScreenClient] Stopping session internal

Jan 16 10:50:44 My-MacBook-Pro.local coreaudiod[161]: 2014-01-16 10:50:44.544218 AM [AirPlayScreenClient] Stopped session internal

Jan 16 10:50:44 My-MacBook-Pro.local AirPlayUIAgent[985]: 2014-01-16 10:50:44.544266 AM [AirPlayAVSys] ### Quiesce AirPlay

Jan 16 10:50:44 My-MacBook-Pro.local SystemUIServer[159]: 2014-01-16 10:50:44.544297 AM [AirPlayAVSys] ### Quiesce AirPlay

Jan 16 10:50:44 My-MacBook-Pro.local SystemUIServer[159]: 2014-01-16 10:50:44.553084 AM [AirPlayAVSys] ### Quiesce AirPlay

Jan 16 10:50:44 My-MacBook-Pro.local AirPlayUIAgent[985]: 2014-01-16 10:50:44.554904 AM [AirPlayAVSys] ### Quiesce AirPlay

Jan 16 10:50:44 My-MacBook-Pro.local SystemUIServer[159]: 2014-01-16 10:50:44.557604 AM [AirPlayAVSys] Ignoring route away when AirPlay not current

Jan 16 10:50:44 My-MacBook-Pro.local AirPlayUIAgent[985]: 2014-01-16 10:50:44.560307 AM [AirPlayAVSys] Ignoring route away when AirPlay not current

Jan 16 10:50:44 My-MacBook-Pro.local WindowServer[89]: Display 0x04280880: GL mask 0x21; bounds (0, 0)[1920 x 1080], 62 modes available

Jan 16 10:50:44 My-MacBook-Pro.local WindowServer[89]: GLCompositor: GL renderer id 0x01022727, GL mask 0x0000001f, accelerator 0x00004ccb, unit 0, caps QEX|MIPMAP, vram 2048 MB

I am happy to provide more information if needed.

Thank you.

-Tim

Apple TV, OS X Mavericks (10.9.2)

Posted on Feb 26, 2014 7:35 PM

Reply

Answer 1

stfnppr

Level 1

0 points

Feb 27, 2014 4:29 AM in response to EarlOfGray

Hey EarlOfGray,

You're not alone! We experience the same errors since tuesday and after checking the loggs I found out that exactly the same is happening here.

I am also very interested in a solution for that.

Thanks for your workaround. I will try if that works for us for now. Of course this is not a permanent solution.

Regards,

Stefan

Reply

Answer 2

stfnppr

Level 1

0 points

Feb 28, 2014 1:00 AM in response to EarlOfGray

Hi EarlOfGray,

it looks like this is occurs with Mavericks on MBP from 2013 only.

An update to 10.9.2 seems to fix the issue.

See this article for more info:

http://support.apple.com/kb/TS5316

Regards,

Stefan

Reply

Answer 3

Mar 28, 2014 1:17 AM in response to stfnppr

same error with 10.9.2 😢

Reply

Answer 4

Apr 12, 2014 10:06 PM in response to stfnppr

Confirm, the problem still exists in 10.9.2. "Coreaudiod" process is being blocked by the firewall and no solution provided yet by Apple. The only way to make it work is to turn off the firewall in Security settings which is unsafe for a corporate level setup.

Reply

Answer 5

May 28, 2014 12:38 PM in response to EarlOfGray

I'm also having this issue. I have two macbook pro retinas.

One is from my company and the other is my personal laptop.

From my personal laptop I can successfully connect to the Airport Express and play music and it also can connect to all of my Apple TV's successfully.

However from my corp macbook pro I cannot connect to any of the Airplay devices. I'm wondering if it is a policy setting or possibly the McAfee software installed on my machine. The firewall is disabled so it cannot be that.

Any ideas?

Reply

Answer 6

May 30, 2014 10:56 AM in response to EarlOfGray

I'm currently still experiencing this as well. I've confirmed it occurs on 10.9.1, 10.9.2, and 10.9.3 on MacBook Pro Retina's, Mid-2012 and 2013 MacBooks. It happens on multiple ATV's not just one, all are updated to 6.1.1 and a simple reboot seems to fix it temporarily but it does come back. All the ATV's are connecting to the network via Wireless not Ethernet. These are 3rd Gen ATV's but I checked the serial number and these do not match the bad batch of Apple TV's from 2013 that were offered up for Replacement for Apple due to the bad firmware update. None of the computers have the Firewall turned on. Here's the two logs that we always find after the issue occurs (logs are recent, happened this morning):

5/30/14 8:57:36.017 AM coreaudiod[183]: 2014-05-30 08:57:36.016946 AM [AirPlay] ### Feedback taking too long to send (30 seconds, 17 total)

5/30/14 8:57:36.332 AM coreaudiod[183]: 2014-05-30 08:57:36.331492 AM [AirPlay] ### Feedback failed: -6723/0xFFFFE5BD kCanceledErr

The user will get disconnected from Airplay anywhere between 30 seconds to 3 minutes after logging on and can reconnect but then once again get disconnected after the same time period. One interesting thing to note is that when the Feedback Taking Too Long to send error starts occuring and the countdown to disconnect start ticking down to 30, its solely referring to Audio not being sent over the network and Video is working just fine. If I try to play sound I get another log and the sound doesn't play through the speakers. After a reboot, sound works fine and the Feedback Error's do not show up. I've also tried switching to Internal Speakers (since it defaultly switches to Airplay Speakers) after connecting to Airplay and seeing the Feedback timer start in the Console Logs but even after that the log continues to saw its taking too long to send and disconnects in 30 seconds.

This issue has been ongoing for months, I've got a ticket logged as far back as January with this occuring but its infrequent enough that we've just restarted and moved on. I'd say its an issue that occurs to about 5%-10% of meetings but that's an entire meeting that doesn't have the ability to Airplay until someone comes down and reboots it.

I don't often post in this forum but its still an active issue with no resolution, proof that its occuring on other people's systems, and no firmware updates having been released to correct it. It'd be nice to know of any workarounds other than having to buy some lamp timers for each conference room just to get a functional ATV or putting up a sign that says hey if you get disconnected every 3 minutes, reboot the ATV. The whole reason we're using Apple products is for ease of use otherwise I'd put together a much cheaper solution myself. Any help or recommended troubleshooting steps would be fantastic at this point.

Reply

Answer 7

Jun 24, 2014 9:43 AM in response to deucew627

We ended up discovering this may have been caused by the Conference Display Mode feature being turned On. We've disabled this feature en masse at our organization and it seems to have resolved the issue. Doesn't look like its enterprise ready yet and only seems to function for short periods of time successfully while that feature is enabled but performance has been improved now that its off. Its been about two weeks now with no reported issues so we'll see if that's actually it. Good luck, gents!

Reply