Network problems on new FC4 box - please help.

[William W. Austin]

I had to replace a disk (the one with all of the home directories on  
it) on an FC3 box, and so I bought a new drive (particulars  
unimportant).

To make a long story short, I decided to put FC4 on this box, and so I  
installed the new drive and put the root filesystem on it.  I still  
have the old FC3 root drive and can boot to either for comparison...

Under FC3, I have no network problems that I can detect; however, under  
FC4 there are two distinct (related? no idea) problems which have  
eluded me.  I have tried looking up both of these in the archives, but  
have had no luck (some similar issues, but nothing exactly like either  
of these unless I missed them).

Problem 1: network card goes to sleep.

This machine has 2 network cards, both on-board.  The 1GB card L(Intel  
82540EM) goes to the smartswitch to tolk to the local network, and does  
not show any problems.
The other card (nVidia nForce2) is a 100MB card and talks to the DSL  
modem.  Periodically I cannot connect to the internet at all - or even  
ping the DSL modem.  This happens irregularly but about 5-10 times/day.  
If I reboot back to FC3, the problem does not occur.  Network  
configurations between the two (FC3/FC4) are as identical as I can make  
them.  The first few times the problem occurs, sometimes retarting  
networking works, but eventually a full sys reboot is the only thing  
which works.

Problem 2: slow local network.

Under FC3 throughput on the LOCAL network (1GB lan) is very fast.   
Under FC4, the best I have seen is ONE transfer of about 1.2 MB/s - and  
throughput drops to as low as 50-75KB/s at times.  Again, this does not  
occur under FC3 but does under FC4.  Again the same setup as nearly as  
I can make it.  No workaround found so far.

Any suggestions would be greatly appreciated.


-- 
william w. austin                               waustin at speakeasy.net
"life is just another phase i'm going through. this time, anyway ..."