Bug 4750

Distribution:
Gentoo Linux 2005.0

Hardware Environment:

See attached output of dmesg and lspci -vv

Software Environment:

See attached output of emerge info
Problem Description:

If i use this NIC to download a big file ~60MB, the file get corrupted.  I can
get an ip address using dhcp and normal internet browsing is working.  I can log
on an ftp server and browse for files.  This a 2 port NIC, i experience the same
problem on both ports.  Also, i have 2 of those cards and both doesn't work
properly.  I have the same problem with knoppix 3.7 (kernel 2.6.9) and an
old redhat distribution using the 2.4 kernel.  If i use any other NIC on the
same system, everything work as expected.  

Finally, i tried the e1000 version 6.0.60-NAPI driver dowloaded from Intel
http://downloadfinder.intel.com/scripts-df-external/confirm.aspx?ftpDown=ftp://aiedownload.intel.com/df-support/2897/eng/e1000-6.0.60.tar.gz&agr=N&ProductID=983&DwnldId=2897&strOSs=All&OSFullName=All%20Operating%20Systems&lang=eng
It seems to have solved the problem.


Steps to reproduce:

1. Get a Intel 82546EB Gigabit NIC
2. Configure the card, dhcp work fine for me
3. Download any big file, i downloaded install-x86-minimal-2005.0.iso from
gentoo.risq.qc.ca
4. Run sha1sum on the file you just downloaded, this is what i got the first time:
87c0cf79d39a911490945072f7c11bf8c6e0927d install-x86-minimal-2005.0.iso
5. Remove the file and download it again.
6. Run sha1sum, the second time i got these results:
e888f435fe6e0373a5af8bd7c4b12cf7eabc720e  install-x86-minimal-2005.0.iso
7. Repeat, the sha1 hash will be different every time.  Of course, the file is
useless.