Screensaver does not start

[Rishabh Nagendra]

Binary package hint: gnome-screensaver

Whenever the screensaver times out, the desktop gradually fades away, after which it flickers a bit and jumps back to the desktop
The screensaver refuses to start.

gnome-screensaver-preferences seems to be behaving alright, though.

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Disassembly: 0x0:
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/lib/gnome-screensaver/gnome-screensaver-gl-helper
NonfreeKernelModules: nvidia
Package: gnome-screensaver 2.23.90-0ubuntu1
ProcAttrCurrent: unconfined
ProcCmdline: /usr/lib/gnome-screensaver/gnome-screensaver-gl-helper
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/lib/gnome-screensaver/gnome-screensaver:/usr/lib/xscreensaver:/usr/lib/xscreensaver
 LANG=en_IN
 SHELL=/bin/bash
Signal: 11
SourcePackage: gnome-screensaver
Stacktrace:
 #0 0x00000000 in ?? ()
 #1 0xb7f56be4 in ?? () from /lib/ld-linux.so.2
 #2 0xb7f4982f in ?? () from /lib/ld-linux.so.2
StacktraceTop:
 ?? ()
 ?? () from /lib/ld-linux.so.2
 ?? () from /lib/ld-linux.so.2
ThreadStacktrace:
 .
 Thread 1 (process 27038):
 #0 0x00000000 in ?? ()
 #1 0xb7f56be4 in ?? () from /lib/ld-linux.so.2
 #2 0xb7f4982f in ?? () from /lib/ld-linux.so.2
Title: gnome-screensaver-gl-helper crashed with SIGSEGV
Uname: Linux 2.6.24-16-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev pulse pulse-access pulse-rt video

[Apport retracing service (apport)]

StacktraceTop:?? ()
_dl_init_internal () from /lib/ld-linux.so.2
_dl_start_user () from /lib/ld-linux.so.2

[Pedro Villavicencio (pedro)]

Thanks for your bug report. Please try to obtain a backtrace http://wiki.ubuntu.com/DebuggingProgramCrash and attach the file to the bug report. This will greatly help us in tracking down your problem.

[Rishabh Nagendra (cybermaster178-deactivatedaccount)]

This doesn't seem to happen when glx is not enabled. (on my nvidia card).
The last time I tried it, it was with Compiz running.
However, apport launched only once, under conditions I'm not able to reproduce. However, I can SEE that the screensaver doesn't start, even though apport doesn't tell me about it. So I'm not sure if the program is CRASHING as such.
glx is not working for me at the moment, so I'll try a backtrace soon after I get it to work.

[Žygimantas Beručka (zygis)]

I can confirm the same behaviour of gnome-screensaver and I don't think (well I'm pretty certain) it's not a crash. When gnome-screensaver is activated after a particular time the very same moment it is interrupted (in the similar way like moving a mouse, etc.) by something until another activation and so on. I use "blank screen" as a screensaver theme, computer screen is regarded as idle after five minutes and "Lock screen when screensaver is active" option is turned off, if it matters. Version 2.24.0-0ubuntu1. I have Intel 855GM video, but it should not be anything related to video.

[Jan Mynarik (jan-mynarik)]

I can confirm exactly the same behaviour, except for the crash. No crash for me, the same behaviour as Žygimantas reported.

It doesn't depend on chosen screensaver. My card is nVidia NVS 135M.

Version: 2.24.0-0ubuntu2. It worked perfectly on hardy and doesn't in intrepid (upgraded a week ago to beta).

[Jan Mynarik (jan-mynarik)]

Confirmed from three sources. As the crash can't be reproduced (even original reporter Rishabh can't) but the rest of the behaviour is confirmed, this bug report is no longer incomplete.

[Rishabh Nagendra (cybermaster178-deactivatedaccount)]

No, no. I can.
1. Set screensaver idle time.
2. Wait for the screensaver to time-out.
3. It happens.

The video attached should give you a little idea of what I'm talking about.

[Jan Mynarik (jan-mynarik)]

Rishabh, I understand screensaver doesn't work ... but does it still crash?

[Rishabh Nagendra (cybermaster178-deactivatedaccount)]

Actually crashing, no.

And I found out something else; it doesn't happen if Compiz is disabled. (i.e.) The screensaver starts normally.

[Jan Mynarik (jan-mynarik)]

Probably a duplicate of bug 278112.