System detail: Dell Vostro 1500, Ubuntu 12.04 LTS, dm Xubuntu-Desktop. Summary: very chaotic unstable behavior...unusable almost. - There is a major issue with the stability and performance of the Power Manager where the power manager plugin panel is very slow to load, it loads about 20 seconds after the Wifi network manager launches and connects, it takes forever when it should load instantly before all the other indicator plugins. - When I go into XFCE control panel settings and click Power Settings, I get a blank screen and this is on a fresh install of 12.04 LTS with XFCE downloaded from the Software Centre. - When I attempt to click on the preferences icon in the panel plugin, nothing happens and then a pop up emerges with a smiley screen repeating the Power Manager version information. Clicking on the button OK keeps me in a perpetual loop where the dialog box never closes. I have to close it with the X window closer button. When I attempt to reopen the dialog box again from the indicator plugin panel, it is totally blank. System detail: Dell Inspiron 1000, Lubuntu 12.04 LTS, dm LXDE. I also have an install of Lubuntu 12.04 on another machine and for some reason it works perfectly every single time. Oddly the above error is only found on XFCE based desktops and does not affect the other DM's.
At this point the Power Manager is totally unusable and unreliable...
(In reply to comment #1) > At this point the Power Manager is totally unusable and unreliable... MAJOR update for you on this bug. Tried doing a clean install of Xubuntu and the problem went away. I think I have identified the conflict area. Explanation: When I first installed Ubuntu I installed it with the default Unity desktop. They have a login screen run by LightDM manager. It matches with the Unity Desktop and has all the same plugins in the panel for things like internet connectivity...Notice in the link provided below they have their own power manager plugin running in the Unity Greeter LightDM screen. I think switching sessions from the Unity Greeter somehow causes problems with the session running in XFCE "Xubuntu" and that the power plugin is affected the most. This might explain the many power manager bug reports. See link: http://joesteiger.com/wp-content/uploads/2012/01/ugreeter-1.png Symptoms of "xfce4-power-manager" running with Unity Greeter first: - power manager fails to load. - plugin takes forever to load. - "cannot connect to XFCE4-power-manager" error. - Power Settings panel in system settings is blank. Thank you for the attention...
This is similar to my experience on Xubuntu 12.04 power manager applet couldn't be loaded to Setting Manager/Power manager and it says "Unable to connect to Xfce Power Manager Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. " I also tried: lev@mach:~$ xfce4-power-manager --quit lev@mach:~$ xfce4-power-manager --no-daemon Xfce Power Manager: Another power manager is already running but didn't help. Cheers, Lev
I also have Ubuntu 12.04 installed. Used the Unity desktop for a while, but I was convinced to switch to Xfce 4.10 from PPA. Installed the xfce4-power-manager package (for some strange reason it wasn't installed when I typed 'sudo apt-get install xfce4'), now using the DE without any problems... Having LightDM as DM, but don't experience your problems. I'd like to help, but can't reproduce the bug...
I just started seeing this problem after having upgraded from Ubuntu 13.04 to Ubuntu 13.10. I tried stracing it, and it ends up like the attachment I'm adding. The lock / login sounds like a possible culprit, as that's something that has changed from 13.04 to 13.10, and I'm also encountering some problems suspending the machine.
Created attachment 5215 xfce power manager strace
Upgraded to Ubuntu 14.04 and I'm still having troubles with this.
This may be fixed with this commit: http://git.xfce.org/xfce/xfce4-power-manager/commit/?id=216a5b750ccbe9fda98e0456a607230cd8c52303 If you get a chance, can you test with xfce4-power-manager 1.3.1? I'm not sure if the Xubuntu guys provide a PPA for easy testing.
No response, closing.