*** This bug is a duplicate of bug 1659922 ***
https://bugs.launchpad.net/bugs/1659922
Just my 2 cents: we had the same problem here after the Firefox 51.0.1 update
(just one machine is affected anyway, the others updated with no problem). The
error message is NOT related to python, but I get graphics errors like the ones
seen in bug #1643200:
[GFX1]: Failed 2 buffer db=0 dw=0 for 0, 0, 1920, 876
[GFX1]: Failed 2 buffer db=0 dw=0 for 0, 0, 1920, 876
[GFX1]: Failed 2 buffer db=0 dw=0 for 0, 0, 1920, 876
Anyway, excluding Firefox from Apparmor (as with the OP's first suggestion)
works around the problem. My suspect is bad interaction with the driver for the
videocard of that specific machine on which we have the problem.
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https://bugs.launchpad.net/bugs/1659988
Title:
Firefox apparmor profile: /usr/bin/python3: error while loading shared
libraries: cannot apply additional memory protection after relocation:
Permission denied
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