Xserver errors

Jasper St. Pierre jstpierre at mecheye.net
Wed Feb 5 09:21:54 PST 2014

What compositor are you using, and how did you build Xwayland? Did you
build xf86-video-wayland as well?

On Wed, Feb 5, 2014 at 12:18 PM, Bill Spitzak <spitzak at gmail.com> wrote:

> I was wondering if my problem is not something anybody else is seeing.
> I have Wayland X11 compositor running. This is on an Nvidia card with
> Nvidia drivers and therefore only SHM clients work. All other Wayland apps
> either work correctly or they fail immediately because they require EGL.
> All X windows show initially as completely black, including all the area
> for the shadows. The X application is responding to clicks and redrawing
> (tested by printing messages to stdout, which appear in the Wayland
> terminal), but the surface remains completely black. Moving the cursor
> around shows the cursor changes correctly when it hovers over the resize
> edges and corners.
> In the most recent version of Wayland I can then resize the window and
> then it displays, but with several errors in the window borders and shadow,
> shown in the attached screen shot. This display updates but all changes are
> deferred until the next event (for instance if I push a button it does not
> redraw as pushed-in until I move the mouse and send a drag event). Again
> print statements reveal that my client is getting the expose event and
> drawing, it's just that the surface does not update, perhaps the commit has
> not been sent?
> As nobody else seems to think there is a problem with Xserver, my best
> guess is that Xwayland is trying to use SHM but it has bugs, while EGL
> works? Another possibility is that Xwayland is broken under X11 compostior
> but works on hardware backends? As I am unable to test either of these I
> cannot tell where the problem may lie.
> If it is indeed either SHM or X11 compositor that is at fault, is this
> something I should work on trying to fix?
> _______________________________________________
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> wayland-devel at lists.freedesktop.org
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