Public bug reported:
I received the following segfault after attempting to login via XDMCP.
The login screen looks fine over XDMCP, and several applications attempt
to auto-launch with varying success. It is clear that the launcher and
top menu system is not launching (perhaps due to the errors shown in
dmesg below).
Is login under lightdm and Unity supported over XDMCP? I wasn't able to
find any other bug reports showing this issue, so I'm not certain if
it's just me, or if others have this problem too. Please let me know if
there is anything else I can provide.
[ 3551.737997] type=1400 audit(1349230256.404:33): apparmor="DENIED"
operation="open" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/proc/5413/cmdline" pid=5406 comm="dbus-daemon" requested_mask="r"
denied_mask="r" fsuid=124 ouid=0
[ 3551.738773] type=1400 audit(1349230256.404:34): apparmor="DENIED"
operation="open" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/proc/5414/cmdline" pid=5406 comm="dbus-daemon" requested_mask="r"
denied_mask="r" fsuid=124 ouid=0
[ 3551.744017] type=1400 audit(1349230256.412:35): apparmor="DENIED"
operation="open" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/proc/5411/cmdline" pid=5406 comm="dbus-daemon" requested_mask="r"
denied_mask="r" fsuid=124 ouid=0
[ 3551.745137] type=1400 audit(1349230256.412:36): apparmor="DENIED"
operation="open" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/proc/5418/cmdline" pid=5406 comm="dbus-daemon" requested_mask="r"
denied_mask="r" fsuid=124 ouid=0
[ 3551.752236] type=1400 audit(1349230256.420:37): apparmor="DENIED"
operation="open" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/proc/5421/cmdline" pid=5406 comm="dbus-daemon" requested_mask="r"
denied_mask="r" fsuid=124 ouid=0
[ 3551.783436] type=1400 audit(1349230256.452:38): apparmor="DENIED"
operation="mount" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/tmp/guest-VEpFzw/.gvfs/" pid=5436 comm="gvfs-fuse-daemo"
fstype="fuse.gvfs-fuse-daemon" srcname="gvfs-fuse-daemon" flags="rw, nosuid,
nodev"
[ 3552.050700] compiz[5438]: segfault at 60 ip 00007f8285068b60 sp
00007fff4700e888 error 4 in libcomposite.so[7f828505a000+23000]
[ 3552.124806] type=1400 audit(1349230256.792:39): apparmor="DENIED"
operation="open" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/proc/5476/cmdline" pid=5406 comm="dbus-daemon" requested_mask="r"
denied_mask="r" fsuid=124 ouid=0
[ 3553.147968] compiz[5484]: segfault at 60 ip 00007fbb93de9b60 sp
00007fff892e13b8 error 4 in libcomposite.so[7fbb93ddb000+23000]
[ 3553.207738] type=1400 audit(1349230257.880:40): apparmor="DENIED"
operation="open" parent=1
profile="/usr/lib/lightdm/lightdm/lightdm-guest-session-wrapper"
name="/proc/5487/cmdline" pid=5406 comm="dbus-daemon" requested_mask="r"
denied_mask="r" fsuid=124 ouid=0
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-31-generic 3.2.0-31.50
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
Home directory /home/adam not ours.
**** List of PLAYBACK Hardware Devices ****
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
ArecordDevices:
Home directory /home/adam not ours.
**** List of CAPTURE Hardware Devices ****
card 1: CX8801 [Conexant CX8801], device 0: CX88 Digital [CX88 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: lightdm 2159 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card1.Amixer.info:
Card hw:1 'CX8801'/'Conexant CX8801 at 0xf5000000'
Mixer name : 'CX88'
Components : ''
Controls : 3
Simple ctrls : 2
Date: Tue Oct 2 20:15:50 2012
HibernationDevice: RESUME=UUID=883461e5-3d54-4027-876f-6d7b30c637de
MachineType: MSI MS-7758
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-31-generic
root=UUID=cabcd135-c274-49f2-a20d-63b74dffc112 ro splash quiet vt.handoff=7
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory
/home/adam not ours.
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.2.0-31-generic N/A
linux-backports-modules-3.2.0-31-generic N/A
linux-firmware 1.79.1
RfKill:
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/12/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V2.2B2
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z77A-G43 (MS-7758)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrV2.2B2:bd03/12/2012:svnMSI:pnMS-7758:pvr1.0:rvnMSI:rnZ77A-G43(MS-7758):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7758
dmi.product.version: 1.0
dmi.sys.vendor: MSI
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise staging
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https://bugs.launchpad.net/bugs/1060572
Title:
XDMCP Failure
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