Wayland Weston blank screen with drm-backend

[Pekka Paalanen]

On Wed, 11 Apr 2018 08:35:22 +0000
John Frankish <john.frankish at outlook.com> wrote:

> > Using mesa-18.0.0, Wayland-1.14 and Weston 3.0.0 I get a blank screen on a machine with intel
> > hd4400 graphics when staring with:
> > 
> > WAYLAND_DEBUG=1 EGL_LOG_LEVEL=debug XDG_RUNTIME_DIR=/run/user/$(id -u) weston-launch >weston.log 2>&1
> > 
> > X works fine and, a couple of mesa upgrades ago, Weston worked fine - full output log attached,
> > any troubleshooting suggestions would be appreciated.
> >   
> Ah - it seems it is due to using "--with-cairo=glesv2" rather than "--with-cairo=image", but why?

Hi,

the glesv2 option has been discouraged for years, so no-one tests it.
It's no surprise it's broken. You can see configure.ac warning you
about it since May 2015.

It only exists so that one could theoretically build the couple demo
programs that actually need it. It's been a wish to rewrite those demos
to not need it, since the demos themselves are still valuable, but
no-one has had the time for it. That's also why the option has not been
completely removed yet.


Thanks,
pq
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