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Subject:	startx xauth unknown command (was Re: Installing X11 on a Dell E6440)
References:	<CANmBfsZgWVNRuX7nXYpc-rNDa68XuXUd+WDbBTUYF8REC7M96g AT mail DOT gmail DOT com> <56D1DCF0 DOT 7040005 AT gmail DOT com>
To:	cygwin AT cygwin DOT com
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID:	<56DEBD61.7070702@dronecode.org.uk>
Date:	Tue, 8 Mar 2016 11:54:09 +0000
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On 27/02/2016 17:29, Marco Atzeri wrote:
> On 27/02/2016 14:57, Robert Haskins wrote:
>
>> { ~ }  » startxwin
>> xauth: (stdin):2:  unknown command "01c8a525b1e7d7cde2587e307895bfa2"
>> xauth: (stdin):3:  unknown command "01c8a525b1e7d7cde2587e307895bfa2"
>> xauth: (stdin):4:  unknown command "01c8a525b1e7d7cde2587e307895bfa2"
>> xauth: (stdin):5:  unknown command "01c8a525b1e7d7cde2587e307895bfa2"
>
>
> this is strange. But it happens also on my X and it works
> so I presume is not the root cause.

Interesting.  This seems to be a long-standing upstream bug with startx 
(of which startxwin is a slightly modified version), (see [1]), that 
startx does not handle correctly the output of xauth when you have more 
than one network interface.

Further, if you have many network interfaces, performing rDNS on all 
their addresses may add significantly to the time it takes to start up 
the X server.

I think the suggestion of patching startx to use $hostname/unix:0 is a 
good one, especially since -nolisten tcp is now the default, the X 
server won't be listening on IP interfaces (... unless someone chooses 
to startx -- -listen tcp --nolisten unix, in which case it will probably 
fail horribly ...)

https://bugs.freedesktop.org/show_bug.cgi?id=13462


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