Description of problem: I'm not quite sure this is the proper component for this bug, but I guess I'll start here. This is a problem that I've been encountering since FC6, and with my recent upgrade to F9, it still exists -- and may cause problems and confusion for various users. So I have the following NIC: 02:09.0 Ethernet controller: Davicom Semiconductor, Inc. 21x4x DEC-Tulip compatible 10/100 Ethernet (rev 31) Which out of the box, uses the 'tulip' driver. With this, I am able to get an IP address, and working network -- for a few minutes. After a little while, the link drops out, and nothing works. NetworkManager: <info> (eth0): carrier now OFF (device state 8) NetworkManager: <info> (eth0): device state change: 8 -> 2 NetworkManager: <info> (eth0): deactivating device. For years I've had to drop 'tulip' into the /etc/modprobe.d/blacklist, which will then cause the 'dmfe' module to be used -- and everything works again. So, I'm wondering how we can go about fixing this so other people with this card won't have to encounter the pain and suffering that is the tulip driver.
I have had the same problem - except that dmfe was automatically used for the Ethernet controller in Fedora 9. I did not realize this until after I discovered the solution - and supposed that the Tulip driver had also been used in the previous release. It was not until I upgraded to 2.6.27.15-170.2.24.fc10.i686 that the card lost the connection and I endured many hours of frustration going through configuration files until I finally stumbled on the simple solution at: http://ubuntuforums.org/archive/index.php/t-186430.html After looking at my backup of the old configuration files I realized that dmfe had been the default for the card in my earlier installation. As many users have encountered this problem it may be a good idea to blacklist the Tulip driver by default in the next kernel release.
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This is still a problem. After upgrading my machine from Fedora 9 to 11, it loaded up both the tulip and dmfe drivers upon reboot and my network was unusable, as DHCP would timeout.
*** This bug has been marked as a duplicate of bug 236928 ***