On Tue, Apr 13, 2010 at 1:08 PM,  <[email protected]> wrote:
> ... when one logs into one
> of these servers, the display goes blank for several seconds.  When the
> display comes back, it is "locked" (one must hit "Ctrl-Alt-Del" and enter
> the password to start working).

  In my experience, the display gets locked on user idle timeout
(screen saver) or on a power management event (laptop lid closes,
sleep button, etc.).  So I'd start looking there.  (Sure, they
shouldn't be happening in this case, but it shouldn't be happening at
all, so obviously something is broken.)  Check the settings for screen
saver and power management.  Possibly even change them, then change
them back, in case they're corrupt but not showing as corrupt.

  Also check the system clock, and time sync.

  Look at video card driver and settings.

> The first time I saw this, the main phone controller ended up failing over
> to its backup server.  (Calls continued, but calls on hold or in the queue
> were terminated.)

  I'm not impressed by the resiliency of your phone system.

-- Ben

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