Path: utzoo!attcan!uunet!seismo!sundc!pitstop!male!sun-arpa!ames!pasteur!ucbvax!tut.cis.ohio-state.edu!bloom-beacon!ATHENA.MIT.EDU!wdc
From: wdc@ATHENA.MIT.EDU (Bill Cattey)
Newsgroups: comp.windows.x
Subject: Resolution on Xibm Backing Store problem.
Message-ID: <kYHJ0XEGG047E1fVJ8@athena.mit.edu>
Date: 20 Apr 89 03:36:03 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 35


 > I just took the newly cleaned up X11R3 Xibm server and
 >  ran Andrew on it. I was told that the Save Under and
 > Backing store code was buggy, so I disabled it.

 > When I posted my first menu under Andrew, the server hung up.

Thanks Bob for the speedy response.  Saying that the server had to be providing
the Expose events.

The problem is that Xibm has an argument naming conflict in controlling the
backing store.

-bs disables backing store in the dix layer,
and enables it in the ddx/ibm layer!

The server, if queried would say the window did not have backing store enabled,
and would then perform backing store operations for you, (which includes not
sending expose events).  The quick dirty solution is to use just the "-nobs"
command line argument and to absolutely not use the documented "-bs" argument to
disable backing store on Xibm.

Perhaps IBM and the X Consortium can iron out how they want to name this crud.

----

Now my server is running, but my andrew windows are sill missing certain parts
of redraws, and some of the redraws are missing bits.  This is indeed upsetting,
since, after working for two days with our server people merging in all the
known Xibm fixes, I'd hoped the thing would be working by now.  At this point, I
suspect the Andrew stuff is at fault.

--  'You mean people enjoy doing this??'

-wdc