This bug was fixed in the package unity-settings-daemon -
15.04.1+15.04.20150318-0ubuntu1
---------------
unity-settings-daemon (15.04.1+15.04.20150318-0ubuntu1) vivid; urgency=medium
[ Ryan Tandy ]
* Don't call XSyncQueryCounter with a null counter. Avoids a crash
under FreeNX/X2Go which don't support the IDLETIME counter. (LP:
#1416081)
[ Sebastien Bacher ]
* Open the battery info dialog when using the corresponding hotkey.
The current code was trying to display a notification with the info
but we don't have design on how that should look like with notify-
osd so go back to what we were doing before (LP: #1432976)
* Restore code that set the scaling factor according the screen dpi,
but only when not under and Unity session. That was desactived in
r4020 because Unity is handling those values, but this is not the
case under ubiquity or unity-greeter. (LP: #1286878)
-- CI Train Bot <ci-train-...@canonical.com> Wed, 18 Mar 2015 12:07:44 +0000
** Changed in: unity-settings-daemon (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1416081
Title:
(FreeNX/X2Go) gnome-session crashed with SIGSEGV in
gnome_idle_monitor_get_idletime()
Status in gnome-desktop3 package in Ubuntu:
New
Status in unity-settings-daemon package in Ubuntu:
Fix Released
Bug description:
The X server used by FreeNX and X2Go does not support the IDLETIME
counter. This eventually leads to a NULL pointer dereference by gnome-
session due to a missing parameter check in
gnome_idle_monitor_get_idletime. This renders GNOME Flashback unusable
via FreeNX/X2Go in Trusty.
Utopic and newer are not affected and the patch is not applicable as
the GnomeIdleMonitor implementation was rewritten. Saucy is also
affected but is EOL, however I would like to fix this in Trusty as the
patch is tiny and IMO obviously correct.
This and bug #1251281 are the only bugs preventing GNOME Flashback
being used via FreeNX/X2Go in Trusty; and the latter has an easy
workaround (divert the acceleration-check helper and replace it with
/bin/true) and may be fixed properly soon.
I would be happy to prepare a debdiff and fill out the SRU template if
a sponsor agrees that the patch is SRUable.
ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: gnome-session-bin 3.9.90-0ubuntu12 [modified:
usr/lib/gnome-session/gnome-session-check-accelerated
usr/lib/gnome-session/gnome-session-check-accelerated-helper]
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CasperVersion: 1.340
Date: Thu Jan 29 19:28:42 2015
ExecutablePath: /usr/bin/gnome-session
ExecutableTimestamp: 1394758239
LiveMediaBuild: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcCmdline: /usr/bin/gnome-session --session=gnome-flashback
ProcCwd: /home/ubuntu
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
LD_LIBRARY_PATH=<set>
SegvAnalysis:
Segfault happened at: 0x7fb690b29196 <gnome_idle_monitor_get_idletime+6>:
mov 0x18(%rdi),%rax
PC (0x7fb690b29196) ok
source "0x18(%rdi)" (0x00000018) not located in a known VMA region (needed
readable region)!
destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-session
StacktraceTop:
gnome_idle_monitor_get_idletime (monitor=0x0) at gnome-idle-monitor.c:613
reset_idle_watch (presence=0x7fb6780036f0) at gsm-presence.c:196
gsm_presence_set_idle_enabled (presence=0x7fb6780036f0, enabled=1) at
gsm-presence.c:354
start_phase (manager=manager@entry=0x1658100) at gsm-manager.c:1568
end_phase (manager=manager@entry=0x1658100) at gsm-manager.c:580
Title: gnome-session crashed with SIGSEGV in gnome_idle_monitor_get_idletime()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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