II'm having the same problem, it looks to be an issue with debian forcing dpi in their kdm package, at least that is what the threads I read on their mailing list from 2004 said. Looks like they haven't fixed it yet.
Hello:
I have a problem with the Fonts of my knoppix install in my hard disc. The problem is that the fonts are very small. I modified the file /etc/kde/kdm/Xservers and i add "-dpi 100".
When i execute "/etc/init.d/kdm restart", the system is perfect. But the problem is when i restart and my system have the fonts at 75 dpi.
What can i do for the system start with the fonts at 100 dpi??
my file XF86Config-4
# FontPath "/usr/X11R6/lib/X11/fonts/local/"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
Thank you.
II'm having the same problem, it looks to be an issue with debian forcing dpi in their kdm package, at least that is what the threads I read on their mailing list from 2004 said. Looks like they haven't fixed it yet.

Microcomputer Builder's Bible IMSAI 8080 Z80 ADM-3A DEC LSI-11 Altair 8800 Bus
$65.00
S-100 Bus Handbook Altair 8800 IMSAI 8080 Board Schematics Xitan Pertec Cromemco
$89.99
S-100 Vector Graphic 12K PROM/RAM Board (Altair, IMSAI)
$99.95
S-100 Vector Graphic 64K Ram Board (Altair, IMSAI)
$99.95
Computer Photo History Altair 8800 Philco 212 CDC 6600 DEC PDP-8 Apple 1 UNIVAC
$69.99
640pg Best of BYTE Magazine 1984 Mac Steve Jobs Altair 8800 IBM 5100 Bob Moog
$85.00
Vintage Digital Research ZSID 1.4 8" Floppy Disk CP/M Z80 Software S-100 Altair
$69.99
Intel 4004IBM Mark 1 UNIVAC Cray-1 Babbage ENIAC Apple 1 Steve Jobs MITS Altair
$57.49
CP/M 86 1.1R 8086 Highmonitor 8 Inch Floppy Diskette 80s IMSAI Altair
$29.99
ALTAIR Bitcoin Mining Solutions PDU IEC SERIES 100-250V 30A/24A Power Distribute
$99.00