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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Warn / fail if xdg-screensaver cannot find xprop"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97811">97811</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Warn / fail if xdg-screensaver cannot find xprop
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Portland
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>1.1.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (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>xdg-utils
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>portland-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>nicolas+freedesktop@guillaumin.me
          </td>
        </tr></table>
      <p>
        <div>
        <pre>On Gnome 3, xdg-screensaver fails to suspend the screensaver if xprop is not
installed.

Without xprop the $screensaver_file is not created (as xdg-screensaver cannot
retrieve the window ID), and so the "inhibitor" placed on the session via DBus
expires after the 10s sleep in the Perl DBus script loop.

---
while (1) {                                                                     
  sleep(10);                                                                    
  my $status = new IO::File($screensaver_file, "r")                             
    or exit 0;                       
---

xdg-screensaver seems to try to support the case where xprop is not installed
(It checks for xprop, and various functions bail out early if it's not
available). However with Gnome 3 (and perhaps with other environments) it seems
it's a hard requirement, and as such the user should be warned if it's missing.

I believe that affects numerous users as there have been several reports of
xdg-screensaver failing with Gnome in various projects:

* <a href="https://bugzilla.redhat.com/show_bug.cgi?id=665918">https://bugzilla.redhat.com/show_bug.cgi?id=665918</a>
* <a href="https://trac.videolan.org/vlc/ticket/4739">https://trac.videolan.org/vlc/ticket/4739</a>
* <a href="https://forum.videolan.org/viewtopic.php?t=127389">https://forum.videolan.org/viewtopic.php?t=127389</a></pre>
        </div>
      </p>


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