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Bug 1227

Summary:	"Finish actual session" in "End session" window dialog don't work, just a black screen appears instead of KDM
Product:	TDE	Reporter:	Alexis PM <alexispm_stellaluna>
Component:	tdebase	Assignee:	Timothy Pearson <kb9vqf>
Status:	RESOLVED FIXED
Severity:	major	CC:	alexispm_stellaluna, bugwatch, darrella, kb9vqf, michele.calgaro, slavek.banko
Priority:	P5
Version:	3.5.13 [Trinity]
Hardware:	Other
OS:	Linux
Compiler Version:		TDE Version String:
Application Version:		Application Name:
Attachments:	photo of kdm black screen

Description Alexis PM 2012-09-19 12:13:51 CDT

"Finish actual session" in "End session" window dialog don't work, just a black screen appears instead of KDM. Doing Ctrl-Alt-F1 & Ctrl-Alt-F6, the KDM window is visible very briefly. I read something similar, related with graphic card (this is a Nvidia, and use the nouveau driver), I don't know. Related: In Exe GNU/Linux, a Debian live CD distro with TDE as desktop environment:
* In a live session, if you choose "Change session" in the TDE exit dialog, you find a KDM login window answer you about user name and password - could be auto-restart the TDE desktop
* In a HD-installation session, the KDM login window option "Reboot" don't work, the system stays in terminal login (you can insert your user name and password, and the system remains in terminal modex", you can use "startx" :P )

Possible related with 
http://bugs.trinitydesktop.org/show_bug.cgi?id=59
and
http://bugs.trinitydesktop.org/show_bug.cgi?id=419

Comment 1 Samuele Carcagno 2012-12-13 14:49:40 CST

Created attachment 1053 [details]
photo of kdm black screen

Comment 2 Samuele Carcagno 2012-12-13 14:53:31 CST

Comment on attachment 1053 [details]
photo of kdm black screen

I have the same problem, when I logout of a session kdm screen is black (See photo). If I type in my password I can log back, but the drawing of the windows is not correct, there are black patches here and there. This is happening on Ubuntu Precise with a Nvidia graphics card (and Nvidia drivers). I have Ubuntu Precise with kde4 and kdm4 on a separate partition and this does not happen there.

Comment 3 Timothy Pearson 2012-12-13 17:03:50 CST

I don't think Bug 419 is related...

With respect to the black widgets, as far as I can tell this is a peculiar bug related to X11 warm reinitialization on nVidia hardware.  It can be worked around by forcing X to restart on session termination in tdmrc.

Comment 4 Slávek Banko 2013-04-22 13:08:51 CDT

Blank screen or a broken login screen, as shown in the attachment 1053 [details]?
Picture of attachments seems same as bug 1245. Please, try to switch TerminateServer in /etc/trinity/kdm/kdmrc (for R14 in /etc/trinity/tdm/tdmrc ) to true.

Problem with reboot from KDM relates to locking in libx11. With  newer version of this library the problem does not occur - see bug 1068.

Comment 5 Darrell 2013-08-17 14:50:03 CDT

Is this report still valid?

Comment 6 Michele Calgaro 2014-03-05 21:28:44 CST

I am closing this bug for lack of user feedback.
Feel free to reopen it if the problem persists.