Hey,
I had trouble with the Promise 20376 as well (using SuSE 8.1, Asus A7V8X Mobo, AMD Athlon 2200 XP+, 1GB RAM)
I finally found a driver which allowed me to install the system using RAID 1. It is from the promise site, even though difficult to find:
http://www.promise.com/support/file/...v1.00.0.14.zip
This is what the Readme says (look at the chipset !, BTW on Startup you briefly see FastTrak 376)
******************
FastTrak TX4000/376/S150 TX Series Linux Driver
Version 1.00.0.x [01/08/2003]
[INTRODUCTION]
1.1 Foreward
This procedure applies to all Promise FastTrak TX4000/376/S150 TX Series
adapters and onboard chipsets running under the SuSE Linux operating
system. Do NOT use this procedure for other versions of Linux.
1.2 Support List
1. Controllers/Adapters List
PDC20319 FastTrak S150 TX4
PDC20371 FastTrak S150 TX2plus
PDC20376 FastTrak 376
PDC20378 FastTrak 378
PDC20619 FastTrak TX4000
2. Linux Distribution List
SuSE 8.1 (kernel 2.4.19-4GB)
SuSE 8.1SMP (kernel 2.4.19-64GB-SMP)
SuSE 8.0 (kernel 2.4.18-4GB)
SuSE 8.0SMP (kernel 2.4.18-64GB-SMP)
....
***********************************
This worked for me but don't ask me about the stability as I just installed it. So no PROMISEs ;-)
In case you need help for the Broadcom BCM4400 LAN. You'll find a driver on the ASUS Windowsinstall CD under Driver->Lan>-Linux
It is caled bcm4400-1.0.1.tar.gz (the version number may be different on your CD)
BTW, in case U use SuSe, you may have a look at this too:
(press english in case you don't like Germany)
http://sdb.suse.de/de/sdb/html/81_ide-scsi.html
This worked for me too
I hope this was of some help to you.
Regards Stephan