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.
Vintage PGA370 Intel 810 Chipset Compaq 191767-102 Main System Motherboard IC#3
$50.00
vintage computer memory chips drivers
$140.00
Microsoft Keyboard Elite X03-51763 Natural PS2 Wired X03-51764 Vintage Tested
$19.99
Vintage 386 Era Mid AT Computer Tower Case with 5.25 + PSU
$104.99
Vintage1994 Arts And Letters War Birds Draw Series CD ROM 400 Clip-Art Images
$7.00
VINTAGE RETRO Jazz Jackrabbit Floppy Disk 3.5" Entertainment Software
$9.95
Microsoft Serial Mouse 2.0A vintage part # 50674
$9.99
Vintage DELL Grey Black Mouse And Soundbar Lot SCHOOL ESTATE FIND untested Lot
$20.00
Apple IIe A2S2064 Vintage Personal Computer
$325.00
GE Vintage Wireless Optical Mouse + Receiver Model HO98804 OPEN BOX NOT TESTED
$24.99