Bug#1039922: mesa breaks gtk4 autopkgtest: panel surface gone

[Simon McVittie]

I think the problem here is more likely to be this bit:

On Thu, 29 Jun 2023 at 16:21:36 +0200, Paul Gevers wrote:
> 228s libEGL warning: failed to get driver name for fd 0
> 228s 228s libEGL warning: MESA-LOADER: failed to retrieve device information
> 228s 228s libEGL warning: failed to get driver name for fd 0
> 228s 230s [02:18:06.642] caught signal 15

and "panel surface gone" seems more likely to be a symptom of that
than the cause?

GTK's test suite is relying on being able to do EGL under Wayland on a
headless machine, at least via llvmpipe.

    smcv