Dear Maintainer,
* What led up to the situation?
* What exactly did you do (or not do) that was effective (or
ineffective)?
Performed aptitude upgrade today, upgraded libgl1-mesa-glx from
13.0.6-1+b2, and rebooted.
* What was the outcome of this action?
Now xinit fails to start due to error
xf86EnableIOPorts: failed to set IOPL for I/O (operation not permitted)
Couldn't open libGL.so.1: /usr/lib/x86_64-linux-gnu/libGL.so.1: undefined
symbol: _giapi_tls_Current
xinit: giving up
Another computer with very similar setup, except with nVidia graphics card,
failed to upgrade today from 13.0.6-1 to 17.2.2-1 (due to dependency issues
with libegl1-glvnd-nvidia [375.82-5], libgl1-glvnd-nvidia-glx [375.82-5],
libglx0-glvnd-nvidia[375.82-5]) does not have the reported issues.
On the affected computer, `ldd -r /usr/lib/x86_64-linux-gnu/libGL.so.1`
returns the same undefined symbol error.
* What outcome did you expect instead?
Successfully launch startx.