[1666] in Release_7.7_team

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Re: Monitor jitter in 4-035

daemon@ATHENA.MIT.EDU (Robert A Basch)
Fri Feb 12 10:18:50 1999

To: "Naomi B. Schmidt" <nschmidt@MIT.EDU>
Cc: Robert A Basch <rbasch@MIT.EDU>, ccount@MIT.EDU, cluster-services@MIT.EDU,
        release-team@MIT.EDU
In-Reply-To: Your message of "Fri, 12 Feb 1999 10:02:04 EST."
             <199902121502.KAA16418@mozart> 
Date: Fri, 12 Feb 1999 10:18:42 EST
From: Robert A Basch <rbasch@MIT.EDU>

> It appears that because of the ambient magnetic field in 4-035, a
> refresh rate of 60 Hz is preferable to 75 Hz in that room, and the
> new release, forcing it back to 75 Hz is what brought the problem
> back.  However, since 75 Hz is probably preferable in locations
> other than 4-035, it's probably best to have the Cluster Services
> manually reset the 4-035 machines to 60 Hz whenever there is a new
> release or when they reinstall a machine in that room.

I'll look into making our update smarter about preserving the current
setting.  Note that it is currently only resetting it to 75 Hz after
OS changes have been applied, as was done in a recent patch release.

Bob


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