Bug 97811 - Warn / fail if xdg-screensaver cannot find xprop
Summary: Warn / fail if xdg-screensaver cannot find xprop
Status: RESOLVED MOVED
Alias: None
Product: Portland
Classification: Unclassified
Component: xdg-utils (show other bugs)
Version: 1.1.0
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Portland Bugs
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Reported: 2016-09-15 05:43 UTC by nicolas+freedesktop
Modified: 2019-02-16 13:37 UTC (History)
1 user (show)

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Description nicolas+freedesktop 2016-09-15 05:43:45 UTC
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:

* https://bugzilla.redhat.com/show_bug.cgi?id=665918
* https://trac.videolan.org/vlc/ticket/4739
* https://forum.videolan.org/viewtopic.php?t=127389
Comment 1 GitLab Migration User 2019-02-16 13:37:34 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xdg/xdg-utils/issues/93.


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