[developers] LOGON (?) prevents launching GUI apps from bash

[Michael Wayne Goodman]

Running a bleeding-edge distro turned out to be a bit too edgy, or too
bloody?, so I've moved to Pop!_OS (a variant of Ubuntu that is very nice,
except for the name). While I'll miss having the latest version of Gnome
and other packages, I'm happy to report that my previous problem seems to
be resolved.

I realized this is likely caused by our old friend, LD_LIBRARY_PATH,
because the LOGON distribution has its own version of libxcb. So something
changed WRT the symbol 'xcb_send_request_with_fds' in the latest version of
libxcb or its dependencies and the LOGON version will become incompatible.

And it's not just us who are (or will be) affected. Google turned up this
related issue: https://github.com/ValveSoftware/steam-for-linux/issues/4816

On Sun, Mar 11, 2018 at 8:57 PM, Michael Wayne Goodman <goodmami at uw.edu>
wrote:

> Hi all,
>
> This may be a very specific problem to my environment, but I'm asking here
> in case anyone has any ideas.
>
> I'm running Antergos Linux (which is basically Arch Linux, both of which
> are very bleeding-edge distros) and after a recent update I was no longer
> able to launch emacs (or other GUI apps) from the command line:
>
>     $ emacs
>     emacs: symbol lookup error: /usr/lib/libxcb-shm.so.0: undefined
> symbol: xcb_send_request_with_fds
>
> I tried commenting out the LOGON-loading-lines in .bashrc, as one does
> when things break for no obvious reason, and it worked again. Does anyone
> know of any calls that would use libxcb (or xcb-proto, libxfont, or other
> dependencies of libxcb) that might cause the error I see? It was updated
> recently, which may have broke something (https://lists.freedesktop.
> org/archives/xcb/2018-March/011091.html).
>
> I also tried `svn up` on LOGON to see if there were any corresponding
> updates, but I'm still unable to get a full checkout for a different reason
> (http://lists.delph-in.net/archives/developers/2018/002688.html).
>
> I'm able to run GUI applications, like emacs, if the LOGON lines in
> .bashrc are commented out or if I start it outside of a terminal, so I'm
> not completely stuck, but I would appreciate any help in resolving the
> issue above.
>
> Thanks
>
> --
> Michael Wayne Goodman
>



-- 
Michael Wayne Goodman
Ph.D., UW Linguistics
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