Ubuntu
fglrx-installer package

Lightdm killed during boot (kills itself?)

Bug #1080082 reported by Ivo Anjo on 2012-11-17

This bug report is a duplicate of: Bug #969489: lightdm tries (and fails) to start too early?. Edit Remove

This bug affects 10 people

Affects		Status	Importance	Assigned to	Milestone
	Light Display Manager	New	Undecided	Unassigned
	fglrx-installer (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

I'm running 12.10, and since installing the stable release in October I didn't install any upgrades. This week, after installing the latest upgrades, lightdm stopped working: the Xserver starts, and dies immediately, leaving me on a tty7 with remains of log messages.

If I log in and manually restart lightdm, it works.

I think I am not alone in this, as a user had reported exactly the same back in July in the xubuntu-users mailing list:
https://lists.ubuntu.com/archives/xubuntu-users/2012-July/004252.html

I've done some tests and:
- If I disable plymouth (by removing splash from GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub) the bug goes away
- If I press 'esc' to exit plymouth before lightdm triess to start the bug also goes away

Looking at the lightdm log, it seems that it decides to kill itself:
...
[+1.22s] DEBUG: Starting Light Display Manager 1.4.0, UID=0 PID=1138 (notice the pid)
...
[+5.59s] DEBUG: New display ready, switching to it
[+5.59s] DEBUG: Activating VT 7
[+6.53s] DEBUG: Greeter start authentication for knuckles
[+6.54s] DEBUG: Started session 1862 with service 'lightdm', username 'knuckles'
[+6.54s] DEBUG: Greeter start authentication for knuckles
[+6.54s] DEBUG: Session 1862: Sending SIGTERM
[+6.54s] DEBUG: Started session 1863 with service 'lightdm', username 'knuckles'
[+6.54s] DEBUG: Got signal 15 from process 1138 (signal to die received from itself!!)
[+6.54s] DEBUG: Caught Terminated signal, shutting down
...

This is what leads me to believe that the bug is in lightdm.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
Uname: Linux 3.5.0-19-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.0:

ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Sat Nov 17 14:06:16 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
fglrx-updates, 9.000, 3.5.0-18-generic, x86_64: installed
fglrx-updates, 9.000, 3.5.0-19-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes
GraphicsCard:
Advanced Micro Devices [AMD] nee ATI Wrestler [Radeon HD 6310] [1002:9802] (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:397b]
InstallationDate: Installed on 2012-10-21 (26 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 10382JG
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.5.0-19-generic root=UUID=9a791902-1e8f-4073-b59c-de19842fdff8 ro rootflags=subvol=@ crashkernel=384M-2G:64M,2G-:128M quiet
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/10/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 4BCN24WW
dmi.board.asset.tag: Base Board Asset Tag Unknown
dmi.board.name: Inagua
dmi.board.vendor: LENOVO
dmi.board.version: 109-B78210-00A
dmi.chassis.asset.tag: Chassis Asset Tag Unknown
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Chassis Version Unknown
dmi.modalias: dmi:bvnLENOVO:bvr4BCN24WW:bd08/10/2011:svnLENOVO:pn10382JG:pvrIdeapadS205:rvnLENOVO:rnInagua:rvr109-B78210-00A:cvnLENOVO:ct10:cvrChassisVersionUnknown:
dmi.product.name: 10382JG
dmi.product.version: Ideapad S205
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.8.4+bzr3407-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

Tags:

Revision history for this message

Ivo Anjo (knuckles) wrote on 2012-11-17:

Lightdm log when it dies during boot Edit (3.2 KiB, text/plain)
BootDmesg.txt Edit (63.2 KiB, text/plain; charset="utf-8")
BootLog.txt Edit (1.6 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (1.4 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (6.2 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (113.4 KiB, text/plain; charset="utf-8")
GconfCompiz.txt Edit (39.1 KiB, text/plain; charset="utf-8")
LightdmDisplayLog.txt Edit (3.2 KiB, text/plain; charset="utf-8")
LightdmGreeterLog.txt Edit (8.0 KiB, text/plain; charset="utf-8")
LightdmGreeterLogOld.txt Edit (10.6 KiB, text/plain; charset="utf-8")
LightdmLog.txt Edit (3.6 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (12.1 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (387 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.8 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (290 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.6 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.0 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (119.5 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (285.1 KiB, text/plain; charset="utf-8")
UnitySupportTest.txt Edit (614 bytes, text/plain; charset="utf-8")
XorgLog.txt Edit (49.2 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (51.3 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (3.0 KiB, text/plain; charset="utf-8")
xdpyinfo.txt Edit (21.4 KiB, text/plain; charset="utf-8")

bugbot (bugbot) on 2012-11-22

tags:

added: xubuntu

bugbot (bugbot) on 2012-11-22

affects:

xorg (Ubuntu) → fglrx-installer (Ubuntu)

Revision history for this message

Ivo Anjo (knuckles) wrote on 2012-11-25:

Might be related to bug #838586 and question #208880 ?

Revision history for this message

Launchpad Janitor (janitor) wrote on 2012-11-28:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in fglrx-installer (Ubuntu):
status:	New → Confirmed

Revision history for this message

Ivo Anjo (knuckles) wrote on 2012-11-28:

Just to add, I've tried multiple workarounds, and the best one (works every time) and less intrusive is modifying the file /etc/init/lightdm.conf adding "respawn" like this:

...
stop on runlevel [016]

respawn

emits login-session-start
emits desktop-session-start
emits desktop-shutdown
---

Revision history for this message

TitusX (titusx) wrote on 2012-12-01:

I have a Problem wich sounds linke hat:
- after an update/restart lightdm stops
- I saw only tty messages

After 2 reboots lightdm works, but now ...
- I can't login anymore (only as guest)
- the password is okay, because login at tty1 works
- /var/log/lightdm/x-1-greeter.log shows some messages marked with "DEBUG" and "CRITICAL", and last message "PID xxxxx (we are xxxxx) sent signal 15, shutting down ..."
- /var/log/lightdm/x-2-greeter.log, too - but last line is: "XIO: fatal IO error 11"

Revision history for this message

TitusX (titusx) wrote on 2012-12-01:

So, finally I managed it - and sorry, maybe this was not the same issue:
- After digging the logfiles, stopping lightdm and try to manually "startx" ...
- it seemed that there must be an lock from an older xsession
- nothing unusual in the"/var/lock/" and "/var/run/" directories
- but there where 3 files in my home directory
- "rm /home/<user>/.Xauthority* " and a reboot
- done

I'm not shure what happend (I'm no linux master mind)
- but: I got the error described in the bug
- after some (2) reboots (I tried a "touch /forcefsck") this bug vanished, but left these files.

Report a bug

This report contains Public information

Everyone can see this information.

Duplicate of bug #969489 Remove

You are

Subscribing...

Edit bug mail

Other bug subscribers

Bug attachments

Add attachment

Remote bug watches

Bug watches keep track of this bug in other bug trackers.

Ubuntufglrx-installer package

Lightdm killed during boot (kills itself?)

Bug Description

Other bug subscribers

Bug attachments

Remote bug watches

Ubuntu
fglrx-installer package