Log spamming

[shad0wca7]

I've not done anything extraordinary to cause it but the DisplayLinkManager service is taking up a LOT of cpu cycles (so everything bogs down) and is spamming the logs continuously with errors:

Oct 23 07:13:04 hyperuberlaptop2 WindowServer[182] <Error>: allocate_backing_surface : IOAccelCreateSurface = e00002c7
--- last message repeated 3 times ---
Oct 23 07:13:05 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 29 times ---
Oct 23 07:13:07 hyperuberlaptop2 WindowServer[182] <Warning>: send_datagram_available_ping: pid 438 failed to act on a ping it dequeued before timing out.
Oct 23 07:13:08 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 69 times ---
Oct 23 07:13:14 hyperuberlaptop2 spindump[2032] <Notice>: Saved diag report for powerstats version com.apple.SystemStats.TopBatteryPowerEvent to /Library/Logs/DiagnosticReports/powerstats_2015-10-23-071314_hyperuberlaptop2.diag
Oct 23 07:13:15 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 9 times ---
Oct 23 07:13:15 hyperuberlaptop2 locationd[81] <Notice>: NETWORK: requery, 0, 0, 0, 0, 14, items, fQueryRetries, 0, fLastRetryTimestamp, 467273458.5
Oct 23 07:13:16 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 19 times ---
Oct 23 07:13:17 hyperuberlaptop2 mds[62] <Error>: (DiskStore.Normal:2382) 12001 1.020605
Oct 23 07:13:17 hyperuberlaptop2 WindowServer[182] <Warning>: send_datagram_available_ping: pid 438 failed to act on a ping it dequeued before timing out.
Oct 23 07:13:18 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 9 times ---
Oct 23 07:13:18 hyperuberlaptop2 WindowServer[182] <Error>: allocate_backing_surface : IOAccelCreateSurface = e00002c7
--- last message repeated 7 times ---
Oct 23 07:13:18 hyperuberlaptop2 lsd[268] <Warning>: LaunchServices: Could not store lsd-identifiers file at /private/var/db/lsd/com.apple.lsdschemes.plist
Oct 23 07:13:19 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 9 times ---
Oct 23 07:13:19 hyperuberlaptop2 Spotlight[284] <Warning>: XPC connection was invalidated
--- last message repeated 2 times ---
Oct 23 07:13:20 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 79 times ---
Oct 23 07:13:27 hyperuberlaptop2 tccd[239] <Notice>: SecTaskLoadEntitlements failed error=22
Oct 23 07:13:27 hyperuberlaptop2 Activity Monitor[2034] <Notice>: SecTaskLoadEntitlements failed error=22
--- last message repeated 2 times ---
Oct 23 07:13:28 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 39 times ---
Oct 23 07:13:31 hyperuberlaptop2 WindowServer[182] <Warning>: send_datagram_available_ping: pid 438 failed to act on a ping it dequeued before timing out.
Oct 23 07:13:31 hyperuberlaptop2 Spotlight[284] <Warning>: XPC connection was invalidated
--- last message repeated 3 times ---
Oct 23 07:13:32 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
Oct 23 07:13:32 hyperuberlaptop2 WindowServer[182] <Error>: allocate_backing_surface : IOAccelCreateSurface = e00002c7
--- last message repeated 1 time ---
Oct 23 07:13:32 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 1 time ---
Oct 23 07:13:32 hyperuberlaptop2 WindowServer[182] <Error>: allocate_backing_surface : IOAccelCreateSurface = e00002c7
--- last message repeated 5 times ---
Oct 23 07:13:32 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 16 times ---
Oct 23 07:13:33 hyperuberlaptop2 login[2036] <Notice>: USER_PROCESS: 2036 ttys000
Oct 23 07:13:34 hyperuberlaptop2 DisplayLinkUserAgent[385] <Error>: CGSDisplayStreamCreate: Invalid display 0xffffffff
--- last message repeated 19 times ---

[Carlo]

Thank you for the report shadowcat. We're working right now on this issue, we'd like to have a solution by the final 2.5.

Best regards,
Carlo

[shad0wca7]

Awesome, thanks! I appreciate all the hard work you guys are putting into this.

[jb510]

I'm running 2.5 and my log still look like this:

[gurkakrieg]

I'm running 2.5 (68993) and seeing same behavior:

Mar  3 22:58:53 RANDOM-COMPUTER-NAME DisplayLinkUserAgent[393]: CGSDisplayStreamCreate: Invalid display 0xffffffff
Mar  3 22:58:55 --- last message repeated 29 times ---

Right now, DisplayLinkUserAgent is consuming 41.1% CPU.

[joej]

This is happening a LOT to me, right now, on my Dual Head Display adapter (anker).

92% cpu for DisplayLinkManager / 40% DisplayLinkUserAgent

ARGH

mac os x 10.11.4 with most recent drivers

[Carlo]

Hi we've made quite a few logging improvements in 2.5.1 but I have still seen this issue myself. I wonder if 10.11.4 is involved.

The issue usually goes away with a replug however very annoying and we should be able to resolve it, so it's in our list.

Kind regards,
Carlo