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    <head>
      <base href="https://bugs.freedesktop.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - GNOME/Wayland desktop freezes when resizing Firefox window"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=104222">104222</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GNOME/Wayland desktop freezes when resizing Firefox window
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/nouveau
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>nouveau@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>sbergman@redhat.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>On Fedora 27 GNOME/Wayland desktop, I can reliably reproduce the desktop
freezing when grabbing the border of a Firefox window with the mouse and
dragging to resize.  (Where Firefox brings Xwayland into the mix, IIUC.  The
only way I found to make the machine responsive again is to ssh into it and
kill -9 the Xwayland processes, which gets me back to the GNOME login screen.)

journalctl says:

<span class="quote">> Dec 12 11:24:42 alpha kernel: nouveau 0000:02:00.0: gr: TRAP ch 16 [003f49a000 Xwayland[27222]]
> Dec 12 11:24:42 alpha kernel: nouveau 0000:02:00.0: gr: GPC0/TPC0/TEX: 80000049
> Dec 12 11:24:42 alpha kernel: nouveau 0000:02:00.0: gr: GPC0/TPC1/TEX: 80000049
> Dec 12 11:24:42 alpha kernel: nouveau 0000:02:00.0: fifo: read fault at 0001c7e000 engine 00 [PGRAPH] client 04 [GPC0/] reason 02 [PAGE_NOT_PRESENT] on channel 16 [003f49a000 Xwayland[27222]]
> Dec 12 11:24:42 alpha kernel: nouveau 0000:02:00.0: fifo: gr engine fault on channel 16, recovering...
> Dec 12 11:24:42 alpha kernel: nouveau 0000:02:00.0: Xwayland[27222]: channel 16 killed!</span >

The GPU is "VGA compatible controller: NVIDIA Corporation GF108GL [Quadro 600]
(rev a1)" according to lspci.

Reproducible with kernel 4.14.3-300.fc27.x86_64, but not reproducible with
4.13.13-300.fc27.x86_64.

Also not reproducible with neither (from a VT) running `weston --xwayland` nor
`weston --use-pixman --xwayland`.</pre>
        </div>
      </p>


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