Just prior to the SIGTRAP I see a mmap() fail with EAGAIN and a failing
ioctl() call. This is from the attached strace with the other noise
trimmed out.
4108 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_ST
ACK, -1, 0 <unfinished ...>
4108 <... mmap resumed> ) = -1 EAGAIN (Resource temporarily unavai
lable)
4108 ioctl(2, TCGETS <unfinished ...>
4108 <... ioctl resumed> , 0x7ffcbb763220) = -1 ENOTTY (Inappropriate ioctl for
device)
4108 write(2, "\n(lightdm-gtk-greeter:4108): GLi"..., 125 <unfinished ...>
4108 <... write resumed> ) = 125
4108 --- SIGTRAP {si_signo=SIGTRAP, si_code=SI_KERNEL} ---
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https://bugs.launchpad.net/bugs/1662244
Title:
lightdm causes all greeters to fail to start
Status in Light Display Manager:
Invalid
Status in LightDM GTK+ Greeter:
Invalid
Status in lightdm package in Ubuntu:
New
Status in unity-greeter package in Ubuntu:
New
Bug description:
lightdm is failing to start. Best guess is because of unity-session-
manager. This is from .xsession-errors.
dbus-update-activation-environment: setting
_=/usr/bin/dbus-update-activation-environment
upstart: click-user-hooks main process (4028) terminated with status 1
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon main process ended, respawning
upstart: unity-settings-daemon respawning too fast, stopped
upstart: indicator-application main process ended, respawning
upstart: indicator-application main process ended, respawning
upstart: indicator-application respawning too fast, stopped
xbrlapi: window 0x03a00084 changed to NULL name
xbrlapi: window 0x03a00084 changed to NULL name
xbrlapi: window 0x03c00084 changed to NULL name
xbrlapi: window 0x03c00084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
xbrlapi: window 0x04000084 changed to NULL name
upstart: dbus main process (4023) killed by TERM signal
I've tried to move aside $HOME/.config/dconf/user and that didn't work. I've
reverted kernel versions and that didn't work. I've moved aside $HOME/.cache
and that didn't work.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: lightdm 1.19.5-0ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6
Uname: Linux 4.8.0-30-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
Date: Mon Feb 6 10:21:29 2017
InstallationDate: Installed on 2015-07-20 (566 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: lightdm
UpgradeStatus: Upgraded to yakkety on 2016-12-14 (53 days ago)
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