Macbook Pro very slow on Dual monitor setup?
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I have my MacBook Pro (Retina, 15-inch, Late 2013), 2.3GHz, i7, 16GB DDR3 Ram with macOS High Sierra version 10.13.3 connected to dual monitors LG. My laptop is connected to the charger, so I can close the lid and use just the 2 external monitors.
My issue comes gradually every time. First 20-30 min of usage seem normal, it works fine. After that the CPU goes crazy for some reason. The Activity Monitor shows kernal_task at over 500% CPU usage all the time. Which is not normal at all.
I don't know what's wrong or how to solve this issue. I never have this problem when I use my laptop when its not connected to external monitors. Ideas?
UPDATE: After a SMC reset, 50 min later, the same issue occurs. This is a screenshot of the temperature and the activity monitor:
multiple-monitors macbook-pro cpu-usage
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
add a comment |
I have my MacBook Pro (Retina, 15-inch, Late 2013), 2.3GHz, i7, 16GB DDR3 Ram with macOS High Sierra version 10.13.3 connected to dual monitors LG. My laptop is connected to the charger, so I can close the lid and use just the 2 external monitors.
My issue comes gradually every time. First 20-30 min of usage seem normal, it works fine. After that the CPU goes crazy for some reason. The Activity Monitor shows kernal_task at over 500% CPU usage all the time. Which is not normal at all.
I don't know what's wrong or how to solve this issue. I never have this problem when I use my laptop when its not connected to external monitors. Ideas?
UPDATE: After a SMC reset, 50 min later, the same issue occurs. This is a screenshot of the temperature and the activity monitor:
multiple-monitors macbook-pro cpu-usage
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
add a comment |
I have my MacBook Pro (Retina, 15-inch, Late 2013), 2.3GHz, i7, 16GB DDR3 Ram with macOS High Sierra version 10.13.3 connected to dual monitors LG. My laptop is connected to the charger, so I can close the lid and use just the 2 external monitors.
My issue comes gradually every time. First 20-30 min of usage seem normal, it works fine. After that the CPU goes crazy for some reason. The Activity Monitor shows kernal_task at over 500% CPU usage all the time. Which is not normal at all.
I don't know what's wrong or how to solve this issue. I never have this problem when I use my laptop when its not connected to external monitors. Ideas?
UPDATE: After a SMC reset, 50 min later, the same issue occurs. This is a screenshot of the temperature and the activity monitor:
multiple-monitors macbook-pro cpu-usage
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
I have my MacBook Pro (Retina, 15-inch, Late 2013), 2.3GHz, i7, 16GB DDR3 Ram with macOS High Sierra version 10.13.3 connected to dual monitors LG. My laptop is connected to the charger, so I can close the lid and use just the 2 external monitors.
My issue comes gradually every time. First 20-30 min of usage seem normal, it works fine. After that the CPU goes crazy for some reason. The Activity Monitor shows kernal_task at over 500% CPU usage all the time. Which is not normal at all.
I don't know what's wrong or how to solve this issue. I never have this problem when I use my laptop when its not connected to external monitors. Ideas?
UPDATE: After a SMC reset, 50 min later, the same issue occurs. This is a screenshot of the temperature and the activity monitor:
multiple-monitors macbook-pro cpu-usage
multiple-monitors macbook-pro cpu-usage
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
edited Feb 17 '18 at 17:11
Bold Lion
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
asked Feb 17 '18 at 15:45
Bold LionBold Lion
1438
1438
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Kernel_task running at an artificially elevated CPU level is the OS's method of forcing the fans to speed up to cool the machine; the side effect is to slow the machine down too, which aids the cooling process.
It can be sign of a hardware issue, but in the case of running 2 external monitors would probably be expected.
You can try resetting the SMC, just in case, but the symptom in itself isn't a sign there is anything wrong.
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
Why would it only happen when it's connected to the dual monitors only though? I'm using the same laptop right now and it works perfectly fine. It's the same thing every time. It only happens when it's connected to the monitors and it's not happening right away, but gradually. It works for about 30 min and then it slows down because of thatkernel_task. So, it makes no sense to be to be a hardware issue. If it was, it should be acting the same way when it's not connected to the dual monitor setup. But i'll try with SMC Reset and see if that changes anything.
– Bold Lion
Feb 17 '18 at 15:57
The graphics card is working much harder. 3 external monitors & the machine would be unable to keep itself cool enough. If it was actually a temperature sensor issue, then the behaviour would be similar without the external monitors connected, which is why I'm assuming all is actually normal.
– Tetsujin
Feb 17 '18 at 15:58
But that was not the case. I've used the same laptop with the same 2 monitors for about 2 weeks before I bought my mac mini. It never worked that way. It was normal. Also, I close the lid and it's just the 2 monitors. I dont know if I have to mention this, but I have macs fan control app installed. Could it be it or something?
– Bold Lion
Feb 17 '18 at 16:00
1
Rather than adding new information after I've typed my answer, you ought to have put it in your question to start with. Reset the SMC & see what happens.
– Tetsujin
Feb 17 '18 at 16:02
Did that, reconnected it to the dual setup and I'd have to wait about 30 min to see if it start acting the same way.
– Bold Lion
Feb 17 '18 at 16:11
|
show 2 more comments
It turned out it's Macs fan control app that I had installed. For some reason, it's not working properly. I turned it off when the kernal_task's CPU went crazy again and it all worked fine after that.
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
add a comment |
protected by Community♦ Jan 30 at 13:59
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Kernel_task running at an artificially elevated CPU level is the OS's method of forcing the fans to speed up to cool the machine; the side effect is to slow the machine down too, which aids the cooling process.
It can be sign of a hardware issue, but in the case of running 2 external monitors would probably be expected.
You can try resetting the SMC, just in case, but the symptom in itself isn't a sign there is anything wrong.
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
Why would it only happen when it's connected to the dual monitors only though? I'm using the same laptop right now and it works perfectly fine. It's the same thing every time. It only happens when it's connected to the monitors and it's not happening right away, but gradually. It works for about 30 min and then it slows down because of thatkernel_task. So, it makes no sense to be to be a hardware issue. If it was, it should be acting the same way when it's not connected to the dual monitor setup. But i'll try with SMC Reset and see if that changes anything.
– Bold Lion
Feb 17 '18 at 15:57
The graphics card is working much harder. 3 external monitors & the machine would be unable to keep itself cool enough. If it was actually a temperature sensor issue, then the behaviour would be similar without the external monitors connected, which is why I'm assuming all is actually normal.
– Tetsujin
Feb 17 '18 at 15:58
But that was not the case. I've used the same laptop with the same 2 monitors for about 2 weeks before I bought my mac mini. It never worked that way. It was normal. Also, I close the lid and it's just the 2 monitors. I dont know if I have to mention this, but I have macs fan control app installed. Could it be it or something?
– Bold Lion
Feb 17 '18 at 16:00
1
Rather than adding new information after I've typed my answer, you ought to have put it in your question to start with. Reset the SMC & see what happens.
– Tetsujin
Feb 17 '18 at 16:02
Did that, reconnected it to the dual setup and I'd have to wait about 30 min to see if it start acting the same way.
– Bold Lion
Feb 17 '18 at 16:11
|
show 2 more comments
Kernel_task running at an artificially elevated CPU level is the OS's method of forcing the fans to speed up to cool the machine; the side effect is to slow the machine down too, which aids the cooling process.
It can be sign of a hardware issue, but in the case of running 2 external monitors would probably be expected.
You can try resetting the SMC, just in case, but the symptom in itself isn't a sign there is anything wrong.
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
Why would it only happen when it's connected to the dual monitors only though? I'm using the same laptop right now and it works perfectly fine. It's the same thing every time. It only happens when it's connected to the monitors and it's not happening right away, but gradually. It works for about 30 min and then it slows down because of thatkernel_task. So, it makes no sense to be to be a hardware issue. If it was, it should be acting the same way when it's not connected to the dual monitor setup. But i'll try with SMC Reset and see if that changes anything.
– Bold Lion
Feb 17 '18 at 15:57
The graphics card is working much harder. 3 external monitors & the machine would be unable to keep itself cool enough. If it was actually a temperature sensor issue, then the behaviour would be similar without the external monitors connected, which is why I'm assuming all is actually normal.
– Tetsujin
Feb 17 '18 at 15:58
But that was not the case. I've used the same laptop with the same 2 monitors for about 2 weeks before I bought my mac mini. It never worked that way. It was normal. Also, I close the lid and it's just the 2 monitors. I dont know if I have to mention this, but I have macs fan control app installed. Could it be it or something?
– Bold Lion
Feb 17 '18 at 16:00
1
Rather than adding new information after I've typed my answer, you ought to have put it in your question to start with. Reset the SMC & see what happens.
– Tetsujin
Feb 17 '18 at 16:02
Did that, reconnected it to the dual setup and I'd have to wait about 30 min to see if it start acting the same way.
– Bold Lion
Feb 17 '18 at 16:11
|
show 2 more comments
Kernel_task running at an artificially elevated CPU level is the OS's method of forcing the fans to speed up to cool the machine; the side effect is to slow the machine down too, which aids the cooling process.
It can be sign of a hardware issue, but in the case of running 2 external monitors would probably be expected.
You can try resetting the SMC, just in case, but the symptom in itself isn't a sign there is anything wrong.
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
Kernel_task running at an artificially elevated CPU level is the OS's method of forcing the fans to speed up to cool the machine; the side effect is to slow the machine down too, which aids the cooling process.
It can be sign of a hardware issue, but in the case of running 2 external monitors would probably be expected.
You can try resetting the SMC, just in case, but the symptom in itself isn't a sign there is anything wrong.
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
answered Feb 17 '18 at 15:53
TetsujinTetsujin
16k53462
16k53462
Why would it only happen when it's connected to the dual monitors only though? I'm using the same laptop right now and it works perfectly fine. It's the same thing every time. It only happens when it's connected to the monitors and it's not happening right away, but gradually. It works for about 30 min and then it slows down because of thatkernel_task. So, it makes no sense to be to be a hardware issue. If it was, it should be acting the same way when it's not connected to the dual monitor setup. But i'll try with SMC Reset and see if that changes anything.
– Bold Lion
Feb 17 '18 at 15:57
The graphics card is working much harder. 3 external monitors & the machine would be unable to keep itself cool enough. If it was actually a temperature sensor issue, then the behaviour would be similar without the external monitors connected, which is why I'm assuming all is actually normal.
– Tetsujin
Feb 17 '18 at 15:58
But that was not the case. I've used the same laptop with the same 2 monitors for about 2 weeks before I bought my mac mini. It never worked that way. It was normal. Also, I close the lid and it's just the 2 monitors. I dont know if I have to mention this, but I have macs fan control app installed. Could it be it or something?
– Bold Lion
Feb 17 '18 at 16:00
1
Rather than adding new information after I've typed my answer, you ought to have put it in your question to start with. Reset the SMC & see what happens.
– Tetsujin
Feb 17 '18 at 16:02
Did that, reconnected it to the dual setup and I'd have to wait about 30 min to see if it start acting the same way.
– Bold Lion
Feb 17 '18 at 16:11
|
show 2 more comments
Why would it only happen when it's connected to the dual monitors only though? I'm using the same laptop right now and it works perfectly fine. It's the same thing every time. It only happens when it's connected to the monitors and it's not happening right away, but gradually. It works for about 30 min and then it slows down because of thatkernel_task. So, it makes no sense to be to be a hardware issue. If it was, it should be acting the same way when it's not connected to the dual monitor setup. But i'll try with SMC Reset and see if that changes anything.
– Bold Lion
Feb 17 '18 at 15:57
The graphics card is working much harder. 3 external monitors & the machine would be unable to keep itself cool enough. If it was actually a temperature sensor issue, then the behaviour would be similar without the external monitors connected, which is why I'm assuming all is actually normal.
– Tetsujin
Feb 17 '18 at 15:58
But that was not the case. I've used the same laptop with the same 2 monitors for about 2 weeks before I bought my mac mini. It never worked that way. It was normal. Also, I close the lid and it's just the 2 monitors. I dont know if I have to mention this, but I have macs fan control app installed. Could it be it or something?
– Bold Lion
Feb 17 '18 at 16:00
1
Rather than adding new information after I've typed my answer, you ought to have put it in your question to start with. Reset the SMC & see what happens.
– Tetsujin
Feb 17 '18 at 16:02
Did that, reconnected it to the dual setup and I'd have to wait about 30 min to see if it start acting the same way.
– Bold Lion
Feb 17 '18 at 16:11
Why would it only happen when it's connected to the dual monitors only though? I'm using the same laptop right now and it works perfectly fine. It's the same thing every time. It only happens when it's connected to the monitors and it's not happening right away, but gradually. It works for about 30 min and then it slows down because of that
kernel_task. So, it makes no sense to be to be a hardware issue. If it was, it should be acting the same way when it's not connected to the dual monitor setup. But i'll try with SMC Reset and see if that changes anything.– Bold Lion
Feb 17 '18 at 15:57
Why would it only happen when it's connected to the dual monitors only though? I'm using the same laptop right now and it works perfectly fine. It's the same thing every time. It only happens when it's connected to the monitors and it's not happening right away, but gradually. It works for about 30 min and then it slows down because of that
kernel_task. So, it makes no sense to be to be a hardware issue. If it was, it should be acting the same way when it's not connected to the dual monitor setup. But i'll try with SMC Reset and see if that changes anything.– Bold Lion
Feb 17 '18 at 15:57
The graphics card is working much harder. 3 external monitors & the machine would be unable to keep itself cool enough. If it was actually a temperature sensor issue, then the behaviour would be similar without the external monitors connected, which is why I'm assuming all is actually normal.
– Tetsujin
Feb 17 '18 at 15:58
The graphics card is working much harder. 3 external monitors & the machine would be unable to keep itself cool enough. If it was actually a temperature sensor issue, then the behaviour would be similar without the external monitors connected, which is why I'm assuming all is actually normal.
– Tetsujin
Feb 17 '18 at 15:58
But that was not the case. I've used the same laptop with the same 2 monitors for about 2 weeks before I bought my mac mini. It never worked that way. It was normal. Also, I close the lid and it's just the 2 monitors. I dont know if I have to mention this, but I have macs fan control app installed. Could it be it or something?
– Bold Lion
Feb 17 '18 at 16:00
But that was not the case. I've used the same laptop with the same 2 monitors for about 2 weeks before I bought my mac mini. It never worked that way. It was normal. Also, I close the lid and it's just the 2 monitors. I dont know if I have to mention this, but I have macs fan control app installed. Could it be it or something?
– Bold Lion
Feb 17 '18 at 16:00
1
1
Rather than adding new information after I've typed my answer, you ought to have put it in your question to start with. Reset the SMC & see what happens.
– Tetsujin
Feb 17 '18 at 16:02
Rather than adding new information after I've typed my answer, you ought to have put it in your question to start with. Reset the SMC & see what happens.
– Tetsujin
Feb 17 '18 at 16:02
Did that, reconnected it to the dual setup and I'd have to wait about 30 min to see if it start acting the same way.
– Bold Lion
Feb 17 '18 at 16:11
Did that, reconnected it to the dual setup and I'd have to wait about 30 min to see if it start acting the same way.
– Bold Lion
Feb 17 '18 at 16:11
|
show 2 more comments
It turned out it's Macs fan control app that I had installed. For some reason, it's not working properly. I turned it off when the kernal_task's CPU went crazy again and it all worked fine after that.
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
add a comment |
It turned out it's Macs fan control app that I had installed. For some reason, it's not working properly. I turned it off when the kernal_task's CPU went crazy again and it all worked fine after that.
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
add a comment |
It turned out it's Macs fan control app that I had installed. For some reason, it's not working properly. I turned it off when the kernal_task's CPU went crazy again and it all worked fine after that.
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
It turned out it's Macs fan control app that I had installed. For some reason, it's not working properly. I turned it off when the kernal_task's CPU went crazy again and it all worked fine after that.
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
answered Feb 17 '18 at 18:30
Bold LionBold Lion
1438
1438
add a comment |
add a comment |
protected by Community♦ Jan 30 at 13:59
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Would you like to answer one of these unanswered questions instead?
