In my BIOS there is no reset to default values.
The outputs of lspci are identical.
Of dmesg|grep eth0
not connecting
eth0: Davicom DM9102/DM9102A rev 64 at MMIO 0xdfffff00, 00:08:A1:8C:44:5A, IRQ 17.
connected:
eth0: Davicom DM9102/DM9102A rev 64 at MMIO 0xdfffff00, 00:08:A1:8C:44:5A, IRQ 17.
eth0: Davicom DM9102 at pci0000:00:0b.0, 00:08:a1:8c:44:5a, irq 17.
Now I found when booting in cli mode module dmfe is not loaded, only tulip, therefore rmmod tulip and modprobe dmfe I can connect to the Internet. Booting in all other modes dmfe and tulip are loaded. Removing only tulip I cannot connect, however removing both dmfe and tulip and then modprobe dmfe again I can get a connection.