Clipboard integration does not work with XDMCP
Danilo Turina
danilo.turina@alcatel-lucent.com
Mon Feb 24 08:31:00 GMT 2014
Thank you very much for your prompt intervention.
I can confirm that your fix works for me too.
I see that now, in the log, lines like the followings are appearing:
client(600000): Released pid(-1).
client(600000): Released cmdline(NULL) and cmdargs(NULL).
client(600000): Reserved pid(-1).
client(600000): Reserved cmdname(NULL) and cmdargs(NULL).
AllocNewConnection: client index = 3, socket fd = 13
I guess you raised the trace/log levels for debug/reporting purposes, so
probably this is not relevant.
Thank you,
Danilo Turina
Il 22/02/2014 14:36, Jon TURNEY ha scritto:
> On 21/02/2014 16:51, Danilo Turina wrote:
>> Hello,
>> I need to connect from my PC to a Linux machine that runs KDE and I use
>> the following command:
>>
>> XWin -from MY_PC_IP_ADDR -terminate -query LINUX_MACHINE_IP_ADDR
>>
>> It works well but the clipboard integration that fails.
>>
>> Notice that:
>> 1) XWin alone (i.e. no XDMCP, i.e. local) works nicely with my Windows
>> clipboard
>> 2) Xming works (almost) fine with XDMCP + clipboard (with the same Linux
>> machine)
>>
>> I gave a look at the XWin log in two cases:
>> A) XWin alone
>> B) XWin + XDMCP
>>
>> And the only differences I've found (apart from the different command line
>> arguments) is the following lines that were at the end of the log of the XDMCP
>> invokation:
>>
>> winProcEstablishConnection - winInitClipboard returned.
>> winClipboardThreadProc - DISPLAY=:0.0
>> winClipboardProc - XOpenDisplay () returned and successfully opened the display.
>> winClipboardIOErrorHandler!
>> winClipboardProc - setjmp returned for IO Error Handler.
>> winClipboardProc - trying to restart clipboard thread
>> winClipboardThreadProc - DISPLAY=:0.0
>> winClipboardProc - XOpenDisplay () returned and successfully opened the display.
>> winClipboardProc - winClipboardFlushWindowsMessageQueue trapped WM_QUIT
>> message, exiting main loop.
>> winClipboardProc - XDestroyWindow succeeded.
>
> Thanks for reporting this problem, and the clear reproduction steps.
>
> The issue here is that the XDMCP login dialog kills all other X clients
> (including the clipboard integration client) for security. The clipboard
> integration client is supposed to restart and reconnect as necessary, but it
> seems this has been broken for a while.
>
> I've has a go at fixing this and uploaded a snapshot at [1]. Perhaps you
> could try that and see if it improves things for you?
>
> [1] ftp://cygwin.com/pub/cygwinx/XWin.20140222-git-c14d82e878fc884d.exe.bz2
>
--
DANILO TURINA
Sesa S.p.A.
Software Development Engineer
Rieti (Italy)
3 mesi 23 giorni 24 minuti 22 secondi
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