Strange Question: Xfree86 on Terminal Services(RDP)

Thu Apr 10 17:33:00 GMT 2003

Noah,

So, you are running XWin.exe on your own machine now, not in the machine 
that is providing Terminal Services?  I will assume that that is the case.

What OS are you running it on now?  Could you check /tmp/XWinrl.log and 
see what engine it reported to be running with?  In fact, just send in 
/tmp/XWinrl.log.  (Notice, XWin.log is used by older versions which you 
should not have.)

Harold

Hughes, Noah wrote:
> 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@iastate.edu
> 
> 
> -----Original Message-----
> From: Harold L Hunt II [mailto:huntharo@msu.edu] 
> Sent: Wednesday, April 09, 2003 4:01 PM
> To: cygwin-xfree@cygwin.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@iastate.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@iastate.edu
>>
>>
>>-----Original Message-----
>>From: Harold L Hunt II [mailto:huntharo@msu.edu] 
>>Sent: Wednesday, April 09, 2003 11:13 AM
>>To: cygwin-xfree@cygwin.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@iastate.edu
>>>
>>>
>>
>>
>>
> 