[Wayland-bugs] [Bug 95086] black screen with cursor via weston-launch, vmwgfx from tty

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95086

--- Comment #2 from Pekka Paalanen <ppaalanen at gmail.com> ---
Your weston log is using drm-backend with gl-renderer, and says the GL
implementation is "llvmpipe" which is a software renderer. I think that is not
the vmwgfx Mesa driver ("svga"?). This also puts you on the
Mesa-software-render-with-GBM-DRM-KMS path, which is probably rarely tested by
anyone.

The mode set and page flip failures are related to the kernel driver, not the
Mesa driver. Also the complain about insane delay seems to indicate the kernel
driver is not properly handling timestamps, or maybe it's just fallout from the
flip failures.

You should isolate and look at only one thing at a time:
- The kernel DRM driver / KMS support: run Weston with drm-backend and
pixman-renderer. This avoid all the hassle with Mesa drivers.
- *If* you are interested in llvmpipe+KMS combination, then look into that
after pixman renderer works fine.
- Finally try to get the Mesa vmware driver working.

Otherwise there are just too many combinations and moving things to figure out
anything.

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