Can't start X after upgrading to cygwin1.7

[Jon TURNEY]

On 03/02/2010 19:43, Jon TURNEY wrote:
>> I had the same symptoms. Non-administrator WinXP users couldn't start
>> the XWin Server, and no /var/log/XWin.0.log was created. The log file
>> could get created if there wasn't one already present, which led me to
>> put the log file in the user's directory instead of /var/log. The
>> other problem was that users couldn't create the /tmp/.X0-lock file
>> and /tmp/.X11-unix/X0 socket if they were left by another user. The
>> solution was to give each user their own /tmp directory.
>>
>> I fixed it with the following:
>> 1. Added a line in /etc/profile, just before the "chmod 1777 /tmp" line:
>> mount -f "$USERPROFILE/Local Settings/Temp" /tmp
>>
>> 2. Changed the XWin Server icon so instead of just startxwin.exe, it
>> says:
>> ... "startxwin.exe -- -logfile ~/XWin.log"
>> (Don't take out the beginning of the command that runs startxwin
>> through bash, or the /etc/profile won't get run. The quotes are
>> needed because this is the argument to bash's -c option.)
>>
>> Could any of the guru's comment on how good or bad these solutions are?
>
> Thanks. It's long been suspected that there is some problem with
> lockfiles running XWin as a non-administrator user (See FAQ 3.4,[1]),
> but I've never had a sufficient clear description to understand what the
> problem is, until now.

Okay, thanks to having some useful reproduction steps I've done a bit of 
testing and generated some patches (at [1]) which should hopefully address 
some of these issues.

The thing I don't understand at this stage is that the /tmp/.X0-lock file and 
/tmp/.X11-unix/X0 socket should be removed when the X server shuts down, so 
shouldn't be causing problems.  Is there some specific way the server is being 
exited which doesn't remove these files?

[1] http://sourceware.org/bugzilla/show_bug.cgi?id=9778

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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