Hi Marc,
like i wrote in a mail at the beginning of the topic:
# dmesg: PCI: Guessed IRQ 11 for device 0000:00:0d.0 PCI: Sharing IRQ 11 with 0000:00:0f.3 eth0: RTL8169sb/8110sb at 0xd0000000, 00:08:ee:00:ee:1c, IRQ 11
Like you see dmesg knows that it is sb.
I have tested the kernel driver and currently using the lastest rtl driver from there website... Same result. Im very very ve... sure that it is a BIOS problem because when chaning the bios and using the original one it works - it only will not work with the linuxbios!
Regards,
Steffen