[   30.953014] systemd-logind[1498]: New session c1 of user ubuntu.
[   30.976948] systemd-logind[1498]: New session c2 of user ubuntu.
[   31.049222] systemd-logind[1498]: New session c3 of user ubuntu.
[   31.064768] systemd-logind[1498]: New session c4 of user ubuntu.
[   31.092187] systemd-logind[1498]: New session c5 of user ubuntu.
[   31.528271] floppy0: no floppy controllers found
[   31.528283] work still pending
[   31.650632] input: HDA NVidia Front Mic as /devices/pci0000:00/0000:00:05.0/sound/card0/input8
[   31.650777] input: HDA NVidia Rear Mic as /devices/pci0000:00/0000:00:05.0/sound/card0/input9
[   31.650877] input: HDA NVidia Line as /devices/pci0000:00/0000:00:05.0/sound/card0/input10
[   31.650972] input: HDA NVidia Line Out as /devices/pci0000:00/0000:00:05.0/sound/card0/input11
[   31.651068] input: HDA NVidia Front Headphone as /devices/pci0000:00/0000:00:05.0/sound/card0/input12
[   31.943599] systemd-logind[1498]: New session c6 of user ubuntu.
[   32.670924] systemd-logind[1498]: New session c7 of user ubuntu.
[   60.738175] init: wait-for-state (whoopsienetwork-manager) main process (1876) terminated with status 100
[  141.793198] lightdm[1923]: segfault at 0 ip 00007ffb020fea10 sp 00007fff606793c0 error 4 in libglib-2.0.so.0.4301.0[7ffb020c6000+10d000]
[  141.814397] systemd-logind[1498]: Removed session c7.
[  142.764919] init: lightdm main process (1923) killed by SEGV signal
[  613.758351] nvidia: module license 'NVIDIA' taints kernel.
[  613.758356] Disabling lock debugging due to kernel taint
[  613.766112] nvidia: module verification failed: signature and/or  required key missing - tainting kernel
[  613.777183] ACPI: PCI Interrupt Link [LMC9] enabled at IRQ 20
[  613.777204] vgaarb: device changed decodes: PCI:0000:00:0d.0,olddecodes=io+mem,decodes=none:owns=none
[  613.777465] [drm] Initialized nvidia-drm 0.0.0 20140818 for 0000:00:0d.0 on minor 0
[  613.777469] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  304.125  Mon Dec  1 19:58:28 PST 2014
[  614.432604] systemd-logind[1498]: New session c8 of user ubuntu.
[  631.504281] NVRM: Xid (PCI:0000:00:0d): 1, Channel 00000002 Method 00000060 Data beef0233
[  631.643858] NVRM: Xid (PCI:0000:00:0d): 1, Channel 00000002 Method 00000060 Data beef0233
[  677.515871] lightdm[7582]: segfault at 0 ip 00007eff5e873a10 sp 00007fff7b5a2460 error 4 in libglib-2.0.so.0.4301.0[7eff5e83b000+10d000]
[  678.143398] init: lightdm main process (7582) killed by SEGV signal
[  678.267365] systemd-logind[1498]: Removed session c8.
[  890.550884] systemd-logind[1498]: New session c9 of user ubuntu.
[ 1028.924041] lightdm[8524]: segfault at 0 ip 00007f4d95508a10 sp 00007fff90f4f000 error 4 in libglib-2.0.so.0.4301.0[7f4d954d0000+10d000]
[ 1028.941576] systemd-logind[1498]: Removed session c9.
[ 1029.093551] init: lightdm main process (8524) killed by SEGV signal
[ 1031.930748] systemd-logind[1498]: New session c10 of user ubuntu.