I am trying to use a Danpex 21143 NIC card with your Linux 6.0 and cannot get it to work. This is a 100 meg FIBER OPTIC card. This card fails with both SC and ST connectors. I have tried both the TULIP and D21X4X drivers without success. We also have a TX(Copper Wire)model of this card that I can get to work with the D21X4X driver, not the TULIP driver though.
I'm changing the component to kernel because that's where driver problems will be resolved ...
Additional testing revealed that both the FIBER CARDS and TX(COPPER WIRE)cards work with the TULIP driver under Linux 5.0. Something is different in 6.0 which causes the driver to no longer work.
6.0 ships with the .89H version of the tulip driver. There is a newer version available directly from the author at http://cesdis.gsfc.nasa.gov/linux/drivers/tulip.html could you give that a try? If that doesn't work, perhaps trying to force the media with the tulip module's "options" parameter. something like insmod tulip options=8 would force full duplex fiber media, if the eeprom on the card lists it as available. sending the output of module insertion with 'debug=2' set should give us some information that might be useful.
*** This bug has been marked as a duplicate of 2744 ***