Subject: kern/20700: Manual ethernet media setting disables Nway autonegotiation
To: None <gnats-bugs@gnats.netbsd.org>
From: None <darcy@druid.net>
List: netbsd-bugs
Date: 03/14/2003 07:10:19
>Number:         20700
>Category:       kern
>Synopsis:       Manual ethernet media setting disables Nway autonegotiation
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Mar 14 04:11:00 PST 2003
>Closed-Date:
>Last-Modified:
>Originator:     D'Arcy J.M. Cain
>Release:        NetBSD 1.6P
>Organization:
D'Arcy J.M. Cain <darcy@{druid|vex}.net>   |  Democracy is three wolves
http://www.druid.net/darcy/                |  and a sheep voting on
+1 416 425 1212     (DoD#0082)    (eNTP)   |  what's for dinner.
>Environment:
	
	
System: NetBSD druid.net 1.6P NetBSD 1.6P (DRUID) #1: Tue Mar 4 07:35:48 EST 2003 door@druid.net:/usr/src/sys/arch/i386/compile/DRUID i386
Architecture: i386
Machine: i386
>Description:
I have an Intel i82544EI 1000BASET Ethernet.  I could not get the board to
use 1000Base-T media.  It would not see carrier.  Jason Thorpe pointed out
that Gig-E basically requires Nway autonegotiation in order to function at
all and the way our manual media settings work disables autonegotiation.
>How-To-Repeat:
With the above card try to set media to 1000BaseT.  Note lack of carrier.
>Fix:
Work around is to set media to auto which uses the Nway autonegotiation.

>Release-Note:
>Audit-Trail:
>Unformatted: