Re: wm driver on SuperMicro ... quirks?

["Jonathan A. Kollasch" <jakllsch%kollasch.net@localhost>]

On Fri, Sep 11, 2026 at 11:33:54AM +0200, Havard Eidnes wrote:
> Hi,
> 
> I run a number of NetBSD hosts which get their network
> connectivity via the use of the "wm" driver.
> 
> I am observing a few ... "quirks" which I thought I would ask if
> anyone else is seeing -- so far not reported as a PR.

I've had LAN-on-motherboard wm(4) interfaces on some machines have
spurious link speed downgrades.  The problem turned out to be the output
filter capacitor on the power supply unit's 5 volt standby rail.
Eventually this bulging capacitor got so bad the machine wouldn't start.
Replacing the PSU got it all working normally again.

	Jonathan Kollasch