[Bug 1777674] Re: Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD servers with DVD

[Andrea Paolo]

I'm at the end of a Ubuntu installation on a pre-installed windows laptop. I have the same issue Ubuntu 20 hangs at "kvm: exiting hardware virtualization" on AMD laptop.
It has been stuck there for half an hour or more.
I didn't set the wi-fi connection during installation

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Title:
  Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD
  servers with DVD

Status in dellserver:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  Confirmed

Bug description:
  Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD
  servers when under graceful reboot stress for 12hrs.

  * This hand is observed only when Onboard SATA DVD Drive is connected.

  * Not seen with Ubuntu 16.04.4 (HWE kernel v4.13)

  * Seen with Ubuntu 18.04 (4.15.0-23-generic, 4.15.0-20-generic)

  Steps:
  Setup a DellEMC AMD server with Onboard DVD Drive, install Ubuntu 18.04 and start reboot stress
  After a few reboots, observe that the machine hangs at "kvm: exiting hardware virtualization" and does not proceed with reboot cycles.

  Only physical reset helps in continuing the reboot test.

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