[Intel-gfx] xf86-video-intel-2.99.912 with dri3 enabled breaks gnome-shell

[Hans de Goede]

Hi All,

While preparing 1.15.99.903 server + 2.99.912 intel drv packages
for Fedora 21, I noticed that both gdm and gnome-shell (tested
with startx) hang, they show the initial background screen and
then just sit there.

Building the server with --disable-dri3, or building the
intel drv with a hacked configure.ac to make it not build
with dri3 support fixes this.

Note this is with mesa 10.2.1, which has been build with xgl-dri3
support, I've double checked this.

Regards,

Hans