Hi, I've just had a similar problem, so I thought I'd let you know what mine was, just in case its similar and helps you.
I'm a RedHat user, 7.2, Fedora Core 1, and now CentOS 5. My hardware has been the same for the past 5 to 7 years (same NIC's), and always worked without problems. My NIC's are :- 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev 74) In switching to CentOS 5, I've also just got a new ISP, which means a new cable modem box. With this cable modem box, my NIC eth0 gets an autoneg config of 10/half, which is wrong, it should be 100/full. My other NIC eth1, connects into a NetGear switch and gets an autoneg config of 100/full, which is correct. So there is something about this particular link of the NIC and the cable modem box that was not autoneg'ing correctly. The result was that the link appeared to work, but could be slow, and from time to time would simply drop out completly for a few seconds, then come back. It looked like a DNS problem to start with, and its taken me hours of trying all combinations of 3 PC boxes (with different NIC's) and 2 ISP lines (ie. two seperate modem boxes) to narrow it down to this problem. Setting the NIC config to 100/full manually fixed the problem. NB. the kernel driver is '3c59x' - so its not exactly the correct driver for my NIC's, but it's been working for years. If this is a related problem, and the autoneg gets fixed, please let me know. Yours, John. -- 3com NIC stops working after some time https://bugs.launchpad.net/bugs/109629 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
