After booting Knoppix 3.8.1 LiveCD and supplying a boot string of "knoppix screen=1280x1024 depth=24", my PS/2 mouse was auto-detected as /dev/psaux. When X began, my mouse cursor was frozen. A boot string of simply "knoppix" had similar results of no cursor movement (no mouse recognition) in X.
With no boot string, i.e. pressing ENTER at the "boot:" prompt, X begins with 1152x784 (or whatever) and the mouse & keyboard function.
I had a functioning Knoppix 3.7 system until I tried to install 3.8.1. The new Knoppix simply won't install correctly and I'm stuck now with no place to turn.
Bob

Seagate ST6000NM0115 6TB 256MB 7200RPM 3.5" SATA 6.0Gb/s Enterprise Hard Drive
$159.99
Seagate Exos X14 10TB 7200RPM 3.5" SAS 12Gb/s Hard Drive HDD ST10000NM0528
$165.00
Seagate 14TB Exos X14 7200RPM SATA 6Gb/s 256MB 3.5" Enterprise HDD ST14000NM0408
$354.99
Western Digital WD 3.5" Red NAS 6TB SATA III 6Gbps HDD WD60EFRX
$159.90
Seagate ST500DM009 BarraCuda 500 GB 3.5" SATA III Desktop Hard Drive
$14.99
HGST HUS724040ALA640 4TB 7200 RPM SATA 3.5" Internal Desktop Drive 100% Health
$78.00
Seagate Barracuda 3TB 3.5" HDD 7200RPM 64MB SATA 6Gb/s ST3000DM001 Tested
$49.99
Seagate Barracuda ST1000DM003 1 TB SATA III 3.5 in Desktop Hard Drive
$23.99
Seagate IronWolf Pro 4TB ST4000NE001 7200RPM 256MB SATA 3.5" NAS HDD Hard Drive
$138.98
Seagate Exos X16 ST10000NM010G 10TB 7200RPM SAS 12Gb/s 3.5" 512e/4Kn HDD
$199.00