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.
Windows 11 Pro USB Flash Drive With Code
$35.00
USB Flash Drive Memory Stick Pendrive Thumb Drive 4GB, 8GB, 32GB, 64GB 128GB LOT
$235.40
1TB/2TB USB 3.0 Flash Drive Thumb U Disk Memory Stick Pen PC Laptop Storage lot
$80.39
Type C USB 3.0 Flash Drive Thumb Drive Memory Stick for PC Laptop 1TB 2TB lot
$73.29
64GB USB 3.0 Flash Drive USB Memory Stick High Speed Retractable USB Thumb Drive
$6.99
Sandisk 16GB 32GB 64GB 128GB Cruzer Blade Flash Drive Memory Stick USB Lot Pack
$4.99
New TESLA OEM Model S,3,X,Y USB Flash Drive for Dashcam & Sentry Mode 128GB
$18.99
1TB 2TB Type C USB 3.0 Flash Drive Thumb Drive Memory Stick for PC Laptop New
$9.99
Lot SanDisk USB Flash Drive Cruzer Blade Glade Force Ultra Flair Luxe 3.0 3.1
$149.99
SanDisk Cruzer Glide USB 3.0 16GB 32GB 64GB 128GB 256GB Flash Drive Memory Lot
$239.99