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D43m0n · 07-08-2015, 06:00 AM

I've experienced a high cpu usage multiple times. When checking with Activity Monitor I see WindowServer and DisplayLinkManager both change coins on about 70% CPU usage on all 4 threads of the CPU. I've updated to 10.10.4 last week, I've seen this before on 10.10.3 too.

I noticed the CPU usage because of the fan noise that came from my MBA, it normally doesn't do that without me starting a CPU intensive task, when it does, I check Activity Monitor and check the CPU and see both WindowServer and DisplayLinkManager consuming more than half of the CPU resources.

I've got two Philips 231P monitors daisy chained and usually have Safari opened with a couple of tabs, Microsoft Outlook and a few terminal screens. Closing most opened screens/programs didn't seem to take effect within 5 minutes (that usually does the trick when something is causing a high CPU usage).

07-08-2015, 06:00 AM	#10
D43m0n Member Join Date: Aug 2012 Posts: 36	I've experienced a high cpu usage multiple times. When checking with Activity Monitor I see WindowServer and DisplayLinkManager both change coins on about 70% CPU usage on all 4 threads of the CPU. I've updated to 10.10.4 last week, I've seen this before on 10.10.3 too. I noticed the CPU usage because of the fan noise that came from my MBA, it normally doesn't do that without me starting a CPU intensive task, when it does, I check Activity Monitor and check the CPU and see both WindowServer and DisplayLinkManager consuming more than half of the CPU resources. I've got two Philips 231P monitors daisy chained and usually have Safari opened with a couple of tabs, Microsoft Outlook and a few terminal screens. Closing most opened screens/programs didn't seem to take effect within 5 minutes (that usually does the trick when something is causing a high CPU usage).