I wanted to start an ubuntu virtual machine as follows in Knoppix 7.2.0DVD (booted with 'fromhd'):
root# qemu-system-x86_64 -cdrom ubuntu-12.04.3-dvd-amd64.iso
The iso image was read OK, with the ubuntu boot screen appearing in the vga display of the emulator. However the booting failed with the following message:
[ 29.044201] BUG: soft lockup - CPU#0 stuck for 23s! [swapper/0:1]
[ 53.044186] BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:1]
[ 89.044214] BUG: soft lockup - CPU#0 stuck for 23s! [swapper/0:1]
When the iso image is burned to a DVD, the ubuntu system boots up without a problem from the disk. And "qemu-system-x86_64" starts a Knoppix VM from iso without problems. So it appears that the ubuntu iso and the qemu behaves as expected individually.
Although this problem may reside well outside the domain of Knoppix per se, I hope I may receive advice on where to go from here. Thanks in advance for any help.
IBM System X3250 M3 Server 8GB RAM Intel Xeon x3440 2.53ghz (NO HDD)
$36.53
IBM Power S822 8284-22A 12SFF Power8 3.89GHz 6Core 64GB RAM No HDD Server System
$359.99
IBM Server System X3100 M4 | Xeon @ 3.10 Ghz | 8GB | 250GB HDD No OS (IG-PC26)
$96.01
1U IBM x3550 M5 4 Bay SFF SAS3 Server 2x E5-2683 V3 28 Core 128GB DDR4 2x Tray
$318.00
IBM System x3550 M3 Dual Intel Xeon X5650 @2.67GHz 32GB RAM No HDD
$74.50
$16000.00
IBM Server eServer | IBMR1000 | UPS 1000VA 700W -Without Batteries
$115.00
IBM SYSTEM X3250 M2 4194PDS Server CORE2 QUAD Q9400 2.6GHz 2GB SEE NOTES
$53.16
IBM x3650 M4 2x Xeon E5-2670 2.6ghz 16-Core / 64GB / M5110e / 2x PSU
$229.99
$7000.00