DebuggingScreenLocking
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** This is a work in progress ** |
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| * Does the problem still occur if you use the "blank screen" screensaver? | |
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| In the event that the package or subsystem has an upstream bug tracker this section should contain detailed steps to forward a bug to that tracker. Some packages may just link to the general "How to Forward" page for another bug tracker like Gnome's bugzilla or freedesktop.org's bug tracker. | If you think that a bug needs to be forwarding upstream, please have a look at [[https://wiki.ubuntu.com/Bugs/Upstream/GNOME|Bugs/Upstream/GNOME]] where you can find instructions on how to do it. |
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| Description of known bug reports that may receive duplicates and how to recognise them. This information should be obtained by looking for bugs tagged as 'metabug'. | List of known issues with gnome-screensaver: |
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| || [[https://launchpad.net/bugs/8896|8896]] || The subject from LP || This bug can be identified by ... || | || [[https://launchpad.net/bugs/491926|491926]] || screensaver doesn't start immediately after being enabled || When screensaver is activated with the control panel, it doesn't activate until system is rebooted. || |
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| || [[https://launchpad.net/bugs/8896|8896]] || The subject from LP || This bug can be identified by ... || | || [[https://launchpad.net/bugs/411350|411350]] || gnome-screensaver not functioning || Inhibitors would not be cleaned up properly if the application that set them dropped off the bus. || == gnome-screensaver cannot grab keyboard or mouse == gnome-screensaver will not activate if an applications grabs keyboard and mouse focus. This happens most noticeably with GTK context menus. If a context or panel menu is open, it grabs the pointer and gnome-screensaver never activates. It is also an issue for applications such as VNC, virt-manager, VirtualBox, Remote Desktop Viewer, Terminal Server Client, etc. This problem is quite difficult to solve and there is currently no solution to this issue. ||<rowbgcolor="#eeeeee"> '''Bug''' || '''Subject''' || || [[https://launchpad.net/bugs/49579]] || screen doesn't lock when panel menu is open || || [[https://bugzilla.gnome.org/show_bug.cgi?id=353437]] || try harder to break grabs || || [[https://bugzilla.gnome.org/show_bug.cgi?id=440515]] || Does not activate screensaver if menu is open || == gnome-screensaver under XFCE (xubuntu, mythbuntu) == Under a XFCE desktop (including xubuntu and mythbuntu), gnome-screensaver never activates after the idle timeout expires. gnome-screensaver in Karmic and later uses gnome-session's idle signal, instead of using it's own idle watcher. Xubuntu doesn't use gnome-session, so gnome-screensaver doesn't work properly. ||<rowbgcolor="#eeeeee"> '''Bug''' || '''Subject''' || || [[https://launchpad.net/bugs/493573]] || gnome-screensaver doesn't activate under XFCE || || [[http://bugzilla.xfce.org/show_bug.cgi?id=5927]] || gnome-screensaver not activated || || [[https://bugzilla.gnome.org/show_bug.cgi?id=592093]] || Reliance on gnome-session || |
This page is part of the debugging series — pages with debugging details for a variety of Ubuntu packages. |
Contents |
Introduction
Bugs relating to screen locking issues typically fall into 4 categories:
- Screensaver failing to start after the inactivity period times out
- Screensaver failing to start when triggered manually
- No password prompt after resuming from suspend/hibernation
- Screensaver not hiding desktop and applications properly
How to file
Screen locking is a complex combination of many different packages, applications, and tools. For detailed information on how screen locking works, see DebuggingScreenLocking/HowScreenLockingWorks.
Important information
- What desktop environment does this problem occur in? (GNOME, XFCE, KDE, etc.)
- Do you use visual effects? (System/Preferences/Appearance/Visual Effects)
- Does the problem still occur if you use the "blank screen" screensaver?
- Is this a laptop or a desktop machine?
- How many monitors do you use?
- If it is a laptop, do you use an external screen?
Getting GConf values
The following command will dump all the screen-locking relevant settings that are stored in GConf:
$ gconftool-2 --dump /apps/gnome-screensaver /desktop/gnome/session /desktop/gnome/lockdown > screen-locking-debug.xml
Debugging procedure
to be completed
How to Triage
to be completed
Stock Reply
to be completed
How to Forward
If you think that a bug needs to be forwarding upstream, please have a look at Bugs/Upstream/GNOME where you can find instructions on how to do it.
Known bugs
List of known issues with gnome-screensaver:
Open
Bug |
Subject |
Symptom |
screensaver doesn't start immediately after being enabled |
When screensaver is activated with the control panel, it doesn't activate until system is rebooted. |
Closed
Bug |
Subject |
Symptom |
gnome-screensaver not functioning |
Inhibitors would not be cleaned up properly if the application that set them dropped off the bus. |
gnome-screensaver cannot grab keyboard or mouse
gnome-screensaver will not activate if an applications grabs keyboard and mouse focus.
This happens most noticeably with GTK context menus. If a context or panel menu is open, it grabs the pointer and gnome-screensaver never activates. It is also an issue for applications such as VNC, virt-manager, VirtualBox, Remote Desktop Viewer, Terminal Server Client, etc.
This problem is quite difficult to solve and there is currently no solution to this issue.
Bug |
Subject |
screen doesn't lock when panel menu is open |
|
try harder to break grabs |
|
Does not activate screensaver if menu is open |
gnome-screensaver under XFCE (xubuntu, mythbuntu)
Under a XFCE desktop (including xubuntu and mythbuntu), gnome-screensaver never activates after the idle timeout expires.
gnome-screensaver in Karmic and later uses gnome-session's idle signal, instead of using it's own idle watcher. Xubuntu doesn't use gnome-session, so gnome-screensaver doesn't work properly.
Bug |
Subject |
gnome-screensaver doesn't activate under XFCE |
|
gnome-screensaver not activated |
|
Reliance on gnome-session |
Non-bugs
How to recognise common issues arising from hardware failures, common feature requests and other invalid bugs for this category. Advice how triage them and stock responses.
Also see
DebuggingScreenLocking (last edited 2012-07-25 17:11:32 by modemcable236)