Try adding xserver=XF86_SVGA xmodule=mga to the cheat code and maybe vga=normal if that does not work.
I'm using an old computer which should be adequate for knoppix use. 500 mhz PIII, 320mb RAM, and a Matrox MGA G200 video card. This setup works fine, but on one monitor I have it won't work. This monitor, an old-school Magnavox CM2089 (says "Super VGA" on the front), works fine in Windows with settings of 800x600 and a refresh rate of 60hz. However, when I try to boot Knoppix as follows:
knoppix screen=800x600 xvrefresh=60
I get 4 loading screens side by side, kind of overlapping.
Any help?
Thanks in advance.
Try adding xserver=XF86_SVGA xmodule=mga to the cheat code and maybe vga=normal if that does not work.
Thanks. it worked with the following cheat code:
xserver=XF86_SVGA xmodule=mga vga=normal screen=800x600 xvrefresh=60
thanks
EDIT (for my memory): This worked: xmodule=mga vga=normal screen=1024x768 xvrefresh=75

IBM System X3850-X5 Server w/4x Intel Xeon E7-4870 CPU , 512 GB DDR3 RAM,NO HDD
$1299.99
IBM QRadar xx29 2x Xeon E5-2650v4 2x 900W PSU M5120 12x 3.5" Bay Server No RAM
$149.99
IBM ADP Server Type 7870 AC1 NO HDD | 128GB RAM PC3L | 2 x Xeon E5620
$199.99
Unused IBM 09P0037 MAINBOARD For RS/6000 7044-170 P-Series
$375.00
IBM SYSTEM X3500 M3 SERVER 7380AC1 TOWER Server XEON E5620 8GB RAID SEE NOTES
$108.92
IBM SERVER SLED WITH HDD SCSI 8.8GB ,P005043441, AS IS,UNTESTED
$165.00
IBM Power S824 12Bay 4U Server - 2x Power8 CPU, 512GB DDR4, MT: 8286-42A
$1731.00
IBM 02YC027 Seagate ST2400MM0129 2.4TB 10K SAS 12Gb/s 2.5" Server Hard Drive
$200.00
Lot of 2 IBM blade center Type H chassis 8852
$559.00
IBM 7915 AC1 M4 E27R704 Server Intel 2650V2 32GB RAM NO HDD w/ 2x 750w PSU
$250.00