Hi,
This issue has a workaround.
put into /etc/environment
LIBGL_DRI3_DISABLE=1
Above envar force use of egl_dri2 defaults
According to https://docs.mesa3d.org/egl.html
Maybe it is a race condition with default MESA_LOADER.
What is the relation between iris and egl_dri2????
Both running is a good strategy??
Please investigate this performance issue ( i think this do not impact 3D accelerated gammig perf )
Thx
Luiz