Hi,
while I have the famous kernel_task problem, I choose here to open a new thread. I have done everything I can do without exchanging hardware ... immediately after boot the fans are at maximum -- no program running --; opening a video or a simple game makes kernel_task go to between 600 and 1800 (!) percent cpu usage, so utilising 18 cores where there are eight. I have a MacBook Pro (2017) with the maximum configuration. Before upgrading to the totally broken High Sierra, it was not a problem to play 3 movies, run windows and linux in virtual machines, and playing a demanding game on a setup with two external monitors. (If anyone wonders: this makes no sense of course; I just wanted to know how well the machine performed.)
Upgrading to High Sierra broke all this Even now -- writing this with TextEdit -- fans are at full speed, kernel_task at 400% (no external hardware attached.)
BTW, dual booting into Windows produces none of these problems. Videos, rather demanding games, on an external Monitor run smoothly. Fans are quiet.
Now I see no other possibility than to give this MacBook to "repair". I am a resident of Germany, so this MacBook is fully protected by warranty (its about 7 months old.)
Of course, Applle is not interested in any laws as long as they may be to their disadvantage.
So, perhaps someone here has tried to have a MacBook repaired in a similar situation. Is there a possibility that a "repair" fixes the problem? I ask in quotation marks, since probably there is no hardware problem.
So as a second question: is it possible to downgrade to Sierra?
Any help is much appreciated
Jochen Kaiserswert
while I have the famous kernel_task problem, I choose here to open a new thread. I have done everything I can do without exchanging hardware ... immediately after boot the fans are at maximum -- no program running --; opening a video or a simple game makes kernel_task go to between 600 and 1800 (!) percent cpu usage, so utilising 18 cores where there are eight. I have a MacBook Pro (2017) with the maximum configuration. Before upgrading to the totally broken High Sierra, it was not a problem to play 3 movies, run windows and linux in virtual machines, and playing a demanding game on a setup with two external monitors. (If anyone wonders: this makes no sense of course; I just wanted to know how well the machine performed.)
Upgrading to High Sierra broke all this Even now -- writing this with TextEdit -- fans are at full speed, kernel_task at 400% (no external hardware attached.)
BTW, dual booting into Windows produces none of these problems. Videos, rather demanding games, on an external Monitor run smoothly. Fans are quiet.
Now I see no other possibility than to give this MacBook to "repair". I am a resident of Germany, so this MacBook is fully protected by warranty (its about 7 months old.)
Of course, Applle is not interested in any laws as long as they may be to their disadvantage.
So, perhaps someone here has tried to have a MacBook repaired in a similar situation. Is there a possibility that a "repair" fixes the problem? I ask in quotation marks, since probably there is no hardware problem.
So as a second question: is it possible to downgrade to Sierra?
Any help is much appreciated
Jochen Kaiserswert