I had the same problem with Ubuntu 16.04 on a Dell PowerEdge T610.
I managed to resolve it by upgrading to 4.15 hwe Kernel: https://wiki.ubuntu.com/Kernel/LTSEnablementStack#Ubuntu_16.04_LTS_-_Xenial_Xerus
I had the same problem with Ubuntu 16.04 on a Dell PowerEdge T610.
I managed to resolve it by upgrading to 4.15 hwe Kernel: /wiki.ubuntu. com/Kernel/ LTSEnablementSt ack#Ubuntu_ 16.04_LTS_ -_Xenial_ Xerus
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