Dear Maintainer,

For my Intel g33 video chipset glxgears ran without issues on Debian
Wheezy, but for Debian Jessie it segfaults on startup.  I also find
that glxgears works fine for that identical Debian Jessie box if the
results are displayed on a remote X server (an X-terminal also running
Debian Jessie, but that box has an nvidia chipset so I am using the
xserver-xorg-video-nouveau package in that case to display the results
of glxgears).

I also find similar results with the foobillardplus 3D game; segfault on
startup with direct display using g33 chipset, but no issues if the game
is displayed remotely using an X-terminal with nvidia chipset.

My working hypothesis at this point to explain these startup segfaults
with both glxgears and foobillardplus is that some regression (likely
upstream) in 3D support for the Intel g33 chipset has been introduced
between Debian Wheezy and Jessie.  If you don't have access to g33
hardware to test this hypothesis yourself, please let me know if you
would like me to run any further tests of the hypothesis.

Please provide the full dmesg, X log and gdb backtrace.

Cheers,
Julien

See three (compressed) files attached.  The dmesg and X log results
were taken just after the gdb backtrace session where glxgears
segfaulted.

Let me know if there is anything else you need.

Alan