RE: Strange Question: Xfree86 on Terminal Services(RDP)

["Hughes, Noah" <nhughes at iastate dot edu>]

I just tired running locally in 8bit color using
Xwin.exe -fullscreen -depth 8 &
and I got the same results as the Terminal Server.

What I am doing is running matlab over the X11 connection. Every time I try
to run a demo in Matlab the X11 session crashes.  The matlab graphical demos
in particular. 

---------------------------------------------------------
Noah Hughes
Systems Administrator
Engineering Computing Support Services
nhughes at iastate dot edu


-----Original Message-----
From: Harold L Hunt II [mailto:huntharo at msu dot edu] 
Sent: Wednesday, April 09, 2003 4:01 PM
To: cygwin-xfree at cygwin dot com
Subject: Re: Strange Question: Xfree86 on Terminal Services(RDP)

Noah,

When you run with 8 bit color in windowed (non-fullscreen) mode the 
engine is forced to be engine 1, which is Shadow GDI DIB.  If you look 
at the log file, you will see a report that the engine passed on the 
command line is being ignored for that very reason.  GDI DIB is the only 
engine that supports a mostly correct color pallette in 8 bit color. 
DirectDraw forces several of the colors in an 8 bit pallette to be 
reserved, which causes a problem with the way that X needs the pallette 
to be allocated.  So, DirectDraw 8 bit color is only available in 
fullscreen mode.


With all of that said, I have no idea what the problem is.


I would like you to run XWin.exe in 8 bit color on the console of the 
Terminal Server.  Please report your results.  If it is stable on the 
console then I can maybe add some printf's to figure out what is 
happening.  If not, then we can conclude that the video driver for your 
video card is buggy or you have some similar sort of problem.


Harold

Hughes, Noah wrote:
> To add to what I said the 16bit and 8bit color is the color depth for the
> Terminal Server Session.  Does anyone know why running at 8bit color would
> crash X?
> 
> Thanks
> 
> -----Original Message-----
> From: Hughes, Noah [mailto:nhughes at iastate dot edu] 
>  
> There is only one cygwin1.dll on the system, however after more testing I
> found that X-server at 16bit color is stable and works, but at 8bit color
it
> still crashes.
> 
> Also I have tired engine 1-4 and I get the same results.
> 
> Thanks
> 
> --------------------------------------------------------
> Noah Hughes
> Systems Administrator
> Engineering Computing Support Services
> nhughes at iastate dot edu
> 
> 
> -----Original Message-----
> From: Harold L Hunt II [mailto:huntharo at msu dot edu] 
> Sent: Wednesday, April 09, 2003 11:13 AM
> To: cygwin-xfree at cygwin dot com
> Subject: Re: Strange Question: Xfree86 on Terminal Services(RDP)
> 
> Noah,
> 
> Your problem is likely unrelated to RDP.
> 
> To test this hypothesis, login to the console of the Terminal Server and 
> run Cygwin/XFree86.  See if you can make it crash.  I suspect that it 
> will crash just as easily on console as it will through RDP.
> 
> Now, what I suspect is that you have multiple versions and copies of 
> cygwin1.dll on your Terminal Server.  Lots of projects come with a copy 
> of cygwin1.dll and it doesn't matter that many of them may not appear to 
> be in your path.  You need to make sure that there is one copy of 
> cygwin1.dll on your machine, and one copy alone.  There is more 
> information about this topic here:
> 
>
http://xfree86.cygwin.com/docs/faq/cygwin-xfree-faq.html#q-status-access-vio
> lation
> 
> 
> At the risk of being crude, I have told many people this before and it 
> often results in some sort of response claiming that having multiple 
> copies of cygwin1.dll on their machine shouldn't be causing problems for 
> them.  I then restate what I said, they delete the extra copies, and 
> everything works.  Please, if you have multiple copies of cygwin1.dll, 
> take my word for it that they are the culprit.  If not, we will need 
> some more information to figure out what is causing your problem.
> 
> 
> Harold
> 
> Hughes, Noah wrote:
> 
>>We have students that logon to a Terminal Server and sometimes want to use
>>unix resources.  We have been using X-Win32 and I thought I would give
>>Xfree86 a try.  From my computer cygwin-Xfree86 works fine.  From the
>>Terminal Server using cygwin-Xfree86 we experience no stability and many
>>crashes.
>>
>>
>>The XWinrl.log files did not have anything suspect, however, I did find a
>>stack dump (below).  This happens whether I am using the Test79 Server or
>>the latest Standard Xwin.exe Server.
>>
>>
>>Exception: STATUS_ACCESS_VIOLATION at eip=0041E2D5
>>eax=102DF598 ebx=B0558B00 ecx=00000001 edx=104DA0E4 esi=10008FFF
>>edi=10450B8C
>>ebp=0022FE18 esp=0022FDF0 program=C:\cygwin\usr\X11R6\bin\XWin-Test79.exe
>>cs=001B ds=0023 es=0023 fs=0038 gs=0000 ss=0023
>>
>>Stack trace:
>>
>>Frame     Function  Args
>>
>>0022FE18  0041E2D5  (00000001, 00000000, 00000029, 00000000)
>>0022FE48  0041E1E8  (4020004B, 20000009, 104DA0A0, 10450A48)
>>0022FE68  0042C156  (104DA0A0, 00000010, 0022FEA8, 00408022)
>>0022FE78  00429DC3  (10450A48, 00000056, 00000000, 00000000)
>>0022FEA8  00408022  (00000002, 00000000, 615F2058, 00000001)
>>0022FEF0  0040179A  (00000004, 615F2058, 100F0328, 0022FF24)
>>0022FF40  61007408  (610D1F58, FFFFFFFE, 00000054, 610D1E7C)
>>0022FF90  610076ED  (00000000, 00000000, FFFFFFFF, 80430990)
>>0022FFB0  006FD222  (00401490, 037F0009, 0022FFF0, 77EA847C)
>>0022FFC0  0040103C  (0022E7A0, 0022F840, 7FFDF000, 0022E8C8)
>>0022FFF0  77EA847C  (00401000, 00000000, 000000C8, 00000100)
>>
>>End of stack trace
>>
>>
>>Does anyone have an idea of how to increase the stability of
> 
> cygwin-Xfree86
> 
>>in a Terminal Service session.
>>
>> 
>>
>>Thanks
>>
>>
>>---------------------------------------------------------
>>Noah Hughes
>>Systems Administrator
>>Engineering Computing Support Services
>>nhughes at iastate dot edu
>>
>>
> 
> 
>