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    <body><span class="vcard"><a class="email" href="mailto:mark.yao@rock-chips.com" title="Mark Yao <mark.yao@rock-chips.com>"> <span class="fn">Mark Yao</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - failed to create display when use "weston --backend=wayland-backend.so""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90562">bug 90562</a>
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            <th>What</th>
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           <td style="text-align:right;">CC</td>
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           </td>
           <td>mark.yao@rock-chips.com
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - failed to create display when use "weston --backend=wayland-backend.so""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90562#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - failed to create display when use "weston --backend=wayland-backend.so""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90562">bug 90562</a>
              from <span class="vcard"><a class="email" href="mailto:mark.yao@rock-chips.com" title="Mark Yao <mark.yao@rock-chips.com>"> <span class="fn">Mark Yao</span></a>
</span></b>
        <pre>(In reply to Pekka Paalanen from <a href="show_bug.cgi?id=90562#c1">comment #1</a>)
<span class="quote">> Using the wayland backend of Weston means that you want to run Weston under
> another Wayland compositor (which could also be Weston, if you wish).

> If you are not running under an existing Wayland compositor, then obviously
> connecting to the parent compositor will fail.

> What are you trying to do?</span >

wayland is a child for other compositor?

I test run weston --backend=x11-backend.so,success
then open  weston desktop shell:
int the desktop shell: run weston --backend=wayland-backend.so,
success display but get this Error: libwayland: unable to lock lockfile
/run/user/0/wayland-0.lock, maybe another compositor is running
Is it right?

thanks for the help.

BTW, if I didn't use weston, like glmark2-es2-wayland or gtk3-demo with
wayland,
I should run weston first? or there is another way to run an existing Wayland
compositor.

My trying is just want to run a destop with wayland backend.</pre>
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