SUMMARY(1): Hang ups and flashing LEDs???

From: Richard Bemrose <rb237_at_phy.cam.ac.uk>
Date: Fri, 27 Feb 1998 08:43:46 +0000 (GMT)

Hi all,

In my original posting I reported that one of our AlphaStation 600 5/266
DU4.0b (patch level 6) was experiencing suspensions of all inputs from
mouse or keyboard. During this periodd, the LEDs on the keyboard flashed
several times although the workstation continued playing the audio CD. The
workstation resumed 'normal' operation after a couple of seconds.

Although I have not fully resolved the problem, I received two replies.
Thanks go to:
        Kwok-Aun Tan <kwok_at_maths.unsw.EDU.AU>
        Jim Belonis <belonis_at_dirac.phys.washington.edu>

Kwok-Aun Tan wrote:
> Don't have a solution but we've had the same problem with
> our 600 5/333's and 255/233's as well. Just thought I'd let
> you know you're not the only one! Difference is ours don't
> recover at all!

Which goes to show this problem is not isolated!

While, Jim Belonis wrote:
> In the past, we have had strange problems with DEC keyboards that have
> gone crazy. They have a CPU inside, so this is entirely possible.
>
> Try unplugging and re-plugging the keyboard to power cycle its CPU.
> I also seem to remember that unplugging the keyboard or mouse causes
> it not to function until the next reboot. But I think that is the
> mouse.

Which I followed as suggeted (no reboot was required). The AlphaStation
600 did again show the problem on one occation, but has not reappeared. I
therefore agree with Jim that the problem surrounds either the keyboards
(LK471-AE) or mouse (PCXAS-AD).

Any further help would be welcome.

Regards,
Rich

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/_/ Richard A Bemrose /_\ Polymers and Colloids Group \_\
/_/ email: rb237_at_phy.cam.ac.uk /_\ Cavendish Laboratory \_\
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Received on Fri Feb 27 1998 - 09:47:15 NZDT

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