Kubuntu not answer, reset graphics.

[Guest]

Hello. Sorry for my bad eanglish.
Kubuntu 14.10
Sometimes kubuntu not answer.
I've get a message: "Effects system was restarted due to reset graphics"
attach logs per minute incident. IP was change.
If not enough, wrote you need.
I thing maby problem in video card. Changed card on another, same nvidia. Problem remained. Driver from repository.

Need help.

syslog

Feb 18 08:43:13 SpawN-PK kernel: [ 3669.798572] NVRM: GPU at PCI:0000:01:00: GPU-b31ddc1b-1e1a-ec93-0e0e-7efd7dd2ea65Feb 18 08:43:13 SpawN-PK kernel: [ 3669.798583] NVRM: Xid (PCI:0000:01:00): 62, Class Error: ChId 0001, Class 0000502d, Offset 00000838, Data ff000074, ErrorCode 00000004
Feb 18 08:43:14 SpawN-PK kernel: [ 3670.204567] AIF:UNPRIV UDP packet: IN=eth2 OUT= MAC= SRC=10.0.0.0 DST=10.0.0.0 LEN=132 TOS=0x00 PREC=0x00 TTL=64 ID=50801 DF PROTO=UDP SPT=17500 DPT=17500 LEN=112 
Feb 18 08:43:14 SpawN-PK kernel: [ 3670.204625] AIF:UNPRIV UDP packet: IN=eth0 OUT= MAC= SRC=10.0.0.0 DST=10.0.0.0 LEN=132 TOS=0x00 PREC=0x00 TTL=64 ID=9422 DF PROTO=UDP SPT=17500 DPT=17500 LEN=112 
Feb 18 08:43:26 SpawN-PK kernel: [ 3682.536760] Watchdog[4114]: segfault at 0 ip 00007fd4e2097c9b sp 00007fd4d1e44780 error 6 in chrome[7fd4de2e8000+4fa6000]
Feb 18 08:43:35 SpawN-PK kernel: [ 3691.747607] AIF:UNPRIV UDP packet: IN=eth2 OUT= MAC=ff:ff:ff:ff:ff:ff:94:de:80:ab:da:27:08:00 SRC=10.0.0.0 DST=10.0.0.0 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=15880 PROTO=UDP SPT=50867 DPT=1947 LEN=48 
Feb 18 08:43:44 SpawN-PK kernel: [ 3700.226283] AIF:UNPRIV UDP packet: IN=eth2 OUT= MAC= SRC=10.0.0.0 DST=10.0.0.0 LEN=132 TOS=0x00 PREC=0x00 TTL=64 ID=56551 DF PROTO=UDP SPT=17500 DPT=17500 LEN=112 
Feb 18 08:43:44 SpawN-PK kernel: [ 3700.715500] AIF:PRIV TCP packet: IN=eth0 OUT= MAC=90:e6:ba:12:2b:33:a8:d0:e5:57:76:7b:08:00 SRC=10.0.0.0 DST=10.0.0.0 LEN=48 TOS=0x00 PREC=0x00 TTL=118 ID=28224 PROTO=TCP SPT=21726 DPT=22 WINDOW=65535 RES=0x00 SYN URGP=0

kenr.log

Feb 18 08:43:13 SpawN-PK kernel: [ 3669.798572] NVRM: GPU at PCI:0000:01:00: GPU-b31ddc1b-1e1a-ec93-0e0e-7efd7dd2ea65Feb 18 08:43:13 SpawN-PK kernel: [ 3669.798583] NVRM: Xid (PCI:0000:01:00): 62, Class Error: ChId 0001, Class 0000502d, Offset 00000838, Data ff000074, ErrorCode 00000004
Feb 18 08:43:14 SpawN-PK kernel: [ 3670.204567] AIF:UNPRIV UDP packet: IN=eth2 OUT= MAC= SRC=10.0.0.0 DST=10.0.0.0 LEN=132 TOS=0x00 PREC=0x00 TTL=64 ID=50801 DF PROTO=UDP SPT=17500 DPT=17500 LEN=112 
Feb 18 08:43:14 SpawN-PK kernel: [ 3670.204625] AIF:UNPRIV UDP packet: IN=eth0 OUT= MAC= SRC=10.0.0.0 DST=10.0.0.0 LEN=132 TOS=0x00 PREC=0x00 TTL=64 ID=9422 DF PROTO=UDP SPT=17500 DPT=17500 LEN=112 
Feb 18 08:43:26 SpawN-PK kernel: [ 3682.536760] Watchdog[4114]: segfault at 0 ip 00007fd4e2097c9b sp 00007fd4d1e44780 error 6 in chrome[7fd4de2e8000+4fa6000]
Feb 18 08:43:35 SpawN-PK kernel: [ 3691.747607] AIF:UNPRIV UDP packet: IN=eth2 OUT= MAC=ff:ff:ff:ff:ff:ff:94:de:80:ab:da:27:08:00 SRC=10.0.0.0 DST=10.0.0.0 LEN=68 TOS=0x00 PREC=0x00 TTL=128 ID=15880 PROTO=UDP SPT=50867 DPT=1947 LEN=48 
Feb 18 08:43:44 SpawN-PK kernel: [ 3700.226283] AIF:UNPRIV UDP packet: IN=eth2 OUT= MAC= SRC=10.0.0.0 DST=110.0.0.0 LEN=132 TOS=0x00 PREC=0x00 TTL=64 ID=56551 DF PROTO=UDP SPT=17500 DPT=17500 LEN=112 
Feb 18 08:43:44 SpawN-PK kernel: [ 3700.715500] AIF:PRIV TCP packet: IN=eth0 OUT= MAC=90:e6:ba:12:2b:33:a8:d0:e5:57:76:7b:08:00 SRC=10.0.0.0 DST=10.0.0.0 LEN=48 TOS=0x00 PREC=0x00 TTL=118 ID=28224 PROTO=TCP SPT=21726 DPT=22 WINDOW=65535 RES=0x00 SYN URGP=0

apport.log

ERROR: apport (pid 6101) Wed Feb 18 08:43:26 2015: called for pid 4109, signal 11, core limit 0ERROR: apport (pid 6101) Wed Feb 18 08:43:26 2015: executable: /opt/google/chrome/chrome (command line "/opt/google/chrome/chrome\ --type=gpu-process\ --channel=4065.0.2101809545\ --supports-dual-gpus=false\ --gpu-driver-bug-workarounds=1,15,21,24,38,46\ --disable-accelerated-video-decode\ --gpu-vendor-id=0x10de\ --gpu-device-id=0x0401\ --gpu-driver-vendor=NVIDIA\ --gpu-driver-version=304.125")
ERROR: apport (pid 6101) Wed Feb 18 08:43:27 2015: is_closing_session(): no DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 6101) Wed Feb 18 08:43:27 2015: apport: report /var/crash/_opt_google_chrome_chrome.1000.crash already exists and unseen, doing nothing to avoid disk usage DoS

dmesg
http://pastebin.com/ZzS3GaAv
Xorg.0.
http://pastebin.com/S6qew4J1

[anika200]

Seg faults are usually some sort of hardware problem like memory or power supply or other. Check that your power supply is in good condition and your pc is getting cooled enough. You could also run a memory test from something like SystemRescueCD.

[SteveRiley]

http://en.wikipedia.org/wiki/Segmentation_fault

A segmentation fault occurs when a program attempts to access a memory location that it is not allowed to access, or attempts to access a memory location in a way that is not allowed (for example, attempting to write to a read-only location, or to overwrite part of the operating system).

Segmentation faults have various causes, and are a common problem in programs written in the C programming language, where they arise primarily due to errors in use of pointers for virtual memory addressing, particularly illegal access.