[Debian Wiki] Update of "BOINC/Troubleshooting" by AlexMalinovich

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The following page has been changed by AlexMalinovich:
http://wiki.debian.org/BOINC/Troubleshooting

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  xhost +local:
  }}}
  This is generally safe on single-user machines, though not ideal.  It is a bad idea on multi-user machines, so don't do it there.
+ 
+ If you're concerned about security a more limited version of the above is
+ {{{
+ xhost +si:localuser:boinc
+ }}}
+ This will only give access to the "boinc" user that boinc_client runs as.
  
  Then, the "Show graphics" button in boincmgr, or the `--result ... graphics_window` option to boinc_cmd, will actually work.  Unfortunately, when it doesn't work because of failed X authorization, it does not report the error back to boinc_cmd or boinc_mgr, and the only trace of the error is in some log file in the result directory `/var/lib/boinc-client/slots/<whatever>`.