Thanks for the help but alas it does not work this time either.
I have installed and tried both linux-generic-lts-quantal and linux-
generic-lts-raring:
$ sudo wajig install linux-generic-lts-*
Result with quantal:
hong@vhost01:~$ uname -a
Linux vhost01 3.5.0-42-generic #65~precise1-Ubuntu SMP
hong@vhost01:~$ uname -a
Linux vhost01 3.2.0-54-generic #82-Ubuntu SMP Tue Sep 10 20:08:42 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
The result with saucy is the same as with precise:
ubuntu@s1:~$ sudo kvm
W: kvm binary is deprecated, please use qemu-system-x86_64 instead
failed to initialize
$ kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
BIOS is OK. I haven't change anything during the upgrade to 12.04. And
now I installed a parallel installation of 10.04 on another partition.
When the machine is booted into that distribution, all VM's run as
usual. It's just with 12.04
Any progress with the bug?
I encouter the same problem now when upgrading from 10.04 to 12.04.3LTS.
I am also using amd CPU, AMD Phenom(tm) II X4 940 to be precise.
After the upgrade, no virtual machine can be started with exactly the
same error. I am considering a distribution downgrade if