[Rd] (PR#10379) Re: x11(....) kills R without DISPLAY

[Prof Brian Ripley]

The problem is that the XtOpenDisplay call did not specify the display.
Easily fixed ....

On Sat, 27 Oct 2007, p.dalgaard at biostat.ku.dk wrote:

> Hin-Tak Leung wrote:
>> Peter Dalgaard wrote:
>>> brechbuehler at gmail.com wrote:
>>>> Full_Name: Christian Brechbuehler
>>>> Version: 2.4.1, 2.5.1, OS: Ubuntu GNU/Linux
>>>> Submission from: (NULL) (24.61.47.236)
>>>>
>>>>
>> <snipped>
>>>> Example (start R without DISPLAY from bash):
>>>>   % DISPLAY=3D R
>>>>  > x11("localhost:11.0")                        # this is my valid=20
>>>> DISPLAY
>>>>   Error: Couldn't find per display information
>>>>   %
>> <snipped>
>>>>  =20
>>> I see this on Fedora 7 too. I suspect that the earlier report was=20
>>> thought to be Mac specific.
>> <snipped>
>>
>> I was experimenting with xvfb last week and didn't see the catatrophic =
>
>> problem like that, so I tried again. Is it possible that this has=20
>> already been fixed in R 2.6.0 ? (I am on fedora 7, x86_64 as well).
>>
>> ------------------------------------------
>> $ export -n DISPLAY
>>
>> $ R
>> R version 2.6.0 (2007-10-03)
>> ...
>>> x11()
>> Error in X11(display, width, height, pointsize, if (is.null(gamma)) 1=20
>> else gamma,  :
>>   unable to start device X11
>> In addition: Warning message:
>> In x11() : unable to open connection to X11 display ''
>>> q()
>> Save workspace image? [y/n/c]: n
>> $ export DISPLAY=3D
>> $ R
>> R version 2.6.0 (2007-10-03)
>> ...
>>> x11()
>> Error in X11(display, width, height, pointsize, if (is.null(gamma)) 1=20
>> else gamma,  :
>>   unable to start device X11
>> In addition: Warning message:
>> In x11() : unable to open connection to X11 display ''
>>> q()
>> Save workspace image? [y/n/c]: n
>> --------------------------------------------------
>>
> You need x11() with a valid display to trigger the bug:
>
> [pd at titmouse2 BUILD]$ ssh -Y 192.168.1.10
> pd at 192.168.1.10's password:
> Last login: Sat Oct 27 02:40:16 2007 from 192.168.1.11
> [pd at janus ~]$ echo $DISPLAY
> localhost:10.0
> [pd at janus ~]$ DISPLAY=3D R -q
> > x11("localhost:10.0")
> Error: Couldn't find per display information
> [pd at janus ~]$ uname -a
> Linux janus 2.6.22.9-91.fc7 #1 SMP Thu Sep 27 20:47:39 EDT 2007 x86_64=20
> x86_64 x86_64 GNU/Linux
> [pd at janus ~]$ cat /etc/issue
> Fedora release 7 (Moonshine)
> Kernel \r on an \m
>
>
> --=20
>   O__  ---- Peter Dalgaard             =D8ster Farimagsgade 5, Entr.B
>  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
> (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327=
> 918
> ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327=
> 907
>
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>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595