On Wed, Jul 15, 2009 at 12:04 AM, Nelson, Kevin
(FacilicorpNB)<[email protected]> wrote:
...
> utresadm –a –c default –t <payflex user token> 1024x...@60.
>
> With this command I get an error stating that if I use default for the DTU
> then I must user default for the User Token.  Am I missing something?  I
> have seen posts that use default for the user token and specify a MAC for
> the DTU and this works – should this then not work the other way by stating
> a payflex token to use a specific screen resolution on any DTU it connects
> to?

You can fix the timing for a DTU regardless of the token (that's the
'-c <dtu> -t default' combination).  You can not fix the timing for a
token regardless of the DTU (that would be '-c default -t <token>',
but the command won't accept that.)

The first is allowed because it's not unusual to have a DTU that is
attached to a monitor or to other video equipment that does not
respond to DDC but must nevertheless be driven with a specific
timing.

The second is disallowed because it creates a huge risk that the
token will become unusable when hotdesked to some DTUs.  The
monitors attached to those DTUs may be unable to accept the timing
that has been tied to the token. When this happens it's very hard to
figure out what's giong on and there's nothing the user can do to
recover from it, other than getting an admin to intervene.  (If this
mode was allowed then it would also create an interesting conflict:
if both the DTU and the token have a forced timing, which timing
wins?  But that's resolvable, it's not the reason why
'-c default -t <token>' is disallowed.)

The safer way to do all of this, provided that your monitors respond
to DDC requests, is to not use 'utresadm' at all.  Instead use
'utxconfig' to force the dimensions of the X desktop.  This allows the
DTU to choose a monitor timing that matches the desktop, and since
the DTU will never drive a timing that the monitor can not accept
there's no risk that any token will be shut out by forcing a timing that
its monitor can not accept.  'utxconfig' lets the admin set a
system-wide default for the desktop dimensions of all tokens or for
individual tokens, and it also lets the user set the dimensions for an
individual token. (That's assuming that the user has access to the
'utxconfig' command.  If you're using kiosk mode then the users might
not have access to any local commands.)

OttoM.
__
ottomeister

Disclaimer: These are my opinions.  I do not speak for my employer.
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