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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** Tags added: cscc
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https://bugs.launchpad.net/bugs/1777674
Title:
Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD
servers with DVD
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu Bionic)
Assignee:
I started a kernel bisect between v4.14 final and v4.15-rc1. The kernel
bisect will require testing of about 7-10 test kernels.
I built the first test kernel, up to the following commit:
1be2172e96e33bfa22a5c7a651f768ef30ce3984
The test kernel can be downloaded from:
** Changed in: linux (Ubuntu)
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu Bionic)
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu Bionic)
Assignee:
Ideally, we'd want to bisect and fix the kernel itself to reliably
shutdown. yanking ahci sounds like a large hammer. Invalidating systemd
task, and pinging kernely people.
** Changed in: systemd (Ubuntu)
Status: Incomplete => Invalid
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Could you please download and install
https://launchpad.net/ubuntu/+source/finalrd/3/+build/15227702/+files/finalrd_3_all.deb
(this is a link from
https://launchpad.net/ubuntu/+source/finalrd/3/+build/15227702 )
And check if that helps with reboots? This should perform pivot-root
from rootfs to
reboot is triggered using #systemctl reboot.
systemd timeout of 30min does not help, system stays hung. Needs a manual
power-reset.
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How is reboot requested/triggered?
Systemd has 30min timeout on the reboot, so things must timeout and
force-self-reboot after 30min.
** No longer affects: systemd (Ubuntu Bionic)
** Changed in: systemd (Ubuntu)
Status: New => Incomplete
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Any update on this?
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https://bugs.launchpad.net/bugs/1777674
Title:
Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD
servers with DVD
** Summary changed:
- Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD servers
+ Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD servers
with DVD
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I think I narrowed it down to these:
v4.14 - No issue observed
v4.15-rc-1 - Issue observed
Wherever the issue is observed, if I blacklist or rmmod ahci driver
before reboot, no issue is observed (because the SATA ODD is gone now).
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I am observing that in the absence of any network (interfaces not
configured for dhcp/static) I can see the graceful reboot halting almost
every reboot.
* Issue is observed with Ubuntu 18.04 kernel 4.15.0-23-generic
* Also observed with 4.18-rc1 hosted at
Update:
I was under the assumption that kvm/kvm_amd module was the suspect.
But I was wrong.
Reason - I tried performing '#modprobe -r kvm_amd kvm' before issuing
'#systemctl reboot' in the reboot script and the system still halted with
Ubuntu 18.04 kernel.
@jsalisbury -
I will keep it today
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.17 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
Moving the bug-report back to Confirmed since these logs like "kvm exiting
hardware virt" and the logs post this are not stored on the physical disks
(reason - disks are already unmounted).
Such logs are available only in the console logs which are already uploaded in
this report.
** Changed
Logs where the hang is not seen:
[ 75.448494] kvm: exiting hardware virtualization
[ 76.187482] reboot: Restarting system
[ 76.191663] reboot: machine restart
[ 76.197621] ACPI MEMORY or I/O RESET_REG.
The last 3 lines are not seen when the hang is observed.
** Attachment added:
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