Printer not detected in 3.9

[gfs]

Knoppix 3.9 does not detect my printers.
This also occurs in 3.7 and 3.8

[gfs]

I failed to mention in prior message that my printers are usb.

[OP4Latino]

My both USB Printer aren't detected neither with Knoppix 3.8.x nor 3.9

I can print in both printer with knoppix 3.7.

I'll wait for some replies for this thread a bit. Otherwise I'll open my own one with more details.