1

Installed ubuntu 14.04 and the system freezes at least once a day at what seems to be random times.

By Freezing I mean the mouse keyboard and screen won't react at all. This will happen no matter if the system is being , or it is idle with lockscreen on.

I have been having to hold the power button to my dektop (powerwash) in order to restart every time.

In my log var/logs/syslog it looks like there were processes running even after the screen froze. Considering what tasks were completed I believe the system froze last somewhere between 11 and 12. 12:50 is when I restarted the desktop.

If anyone can see the problem in my syslog or tell me where else to look it would be a great help. I don't even know where to begin. 

    Mar  8 09:43:00 ray-desktop kernel: [ 4315.744847] [drm:drm_mode_addfb2] [FB:50]
Mar  8 09:43:00 ray-desktop kernel: [ 4315.761520] [drm:drm_mode_addfb2] [FB:51]
Mar  8 09:43:00 ray-desktop kernel: [ 4315.779039] [drm:drm_mode_addfb2] [FB:52]
Mar  8 09:43:00 ray-desktop kernel: [ 4315.795394] [drm:drm_mode_addfb2] [FB:53]
Mar  8 09:43:00 ray-desktop kernel: [ 4316.147743] [drm:intel_crtc_cursor_set_obj] cursor off
Mar  8 09:43:00 ray-desktop kernel: [ 4316.147759] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 2
Mar  8 09:43:00 ray-desktop kernel: [ 4316.147765] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 2
Mar  8 09:43:00 ray-desktop kernel: [ 4316.147771] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=2, B: plane=2, cursor=2, SR: plane=51, cursor=2
Mar  8 09:43:00 ray-desktop kernel: [ 4316.147778] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:43:01 ray-desktop kernel: [ 4316.427894] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 6
Mar  8 09:43:01 ray-desktop kernel: [ 4316.427905] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 10
Mar  8 09:43:01 ray-desktop kernel: [ 4316.427911] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=6, B: plane=2, cursor=2, SR: plane=51, cursor=10
Mar  8 09:43:01 ray-desktop kernel: [ 4316.427919] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:43:02 ray-desktop kernel: [ 4317.463828] [drm:drm_mode_addfb2] [FB:54]
Mar  8 09:43:02 ray-desktop kernel: [ 4317.481212] [drm:drm_mode_addfb2] [FB:55]
Mar  8 09:43:02 ray-desktop kernel: [ 4317.497587] [drm:drm_mode_addfb2] [FB:56]
Mar  8 09:43:02 ray-desktop kernel: [ 4317.684299] [drm:drm_mode_addfb2] [FB:57]
Mar  8 09:43:02 ray-desktop kernel: [ 4317.897821] [drm:drm_mode_addfb2] [FB:58]
Mar  8 09:43:02 ray-desktop kernel: [ 4317.913903] [drm:drm_mode_addfb2] [FB:59]
Mar  8 09:43:02 ray-desktop kernel: [ 4317.931722] [drm:drm_mode_addfb2] [FB:60]
Mar  8 09:43:02 ray-desktop kernel: [ 4317.949703] [drm:drm_mode_addfb2] [FB:61]
Mar  8 09:43:07 ray-desktop kernel: [ 4322.292837] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:43:09 ray-desktop kernel: [ 4325.078441] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:43:09 ray-desktop kernel: [ 4325.096236] [drm:drm_mode_addfb2] [FB:49]
Mar  8 09:43:09 ray-desktop kernel: [ 4325.113447] [drm:drm_mode_addfb2] [FB:50]
Mar  8 09:43:10 ray-desktop kernel: [ 4325.214863] [drm:drm_mode_addfb2] [FB:51]
Mar  8 09:43:10 ray-desktop kernel: [ 4325.416992] [drm:drm_mode_addfb2] [FB:52]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.273145] [drm:drm_mode_addfb2] [FB:53]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.289811] [drm:drm_mode_addfb2] [FB:54]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.306292] [drm:drm_mode_addfb2] [FB:55]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.323071] [drm:drm_mode_addfb2] [FB:56]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.340752] [drm:drm_mode_addfb2] [FB:57]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.358048] [drm:drm_mode_addfb2] [FB:58]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.374379] [drm:drm_mode_addfb2] [FB:59]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.394037] [drm:drm_mode_addfb2] [FB:60]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.410758] [drm:drm_mode_addfb2] [FB:61]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.427707] [drm:drm_mode_addfb2] [FB:62]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.443585] [drm:drm_mode_addfb2] [FB:63]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.460723] [drm:drm_mode_addfb2] [FB:64]
Mar  8 09:43:12 ray-desktop kernel: [ 4327.553663] [drm:intel_crtc_cursor_set_obj] cursor off
Mar  8 09:43:12 ray-desktop kernel: [ 4327.553676] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 2
Mar  8 09:43:12 ray-desktop kernel: [ 4327.553679] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 2
Mar  8 09:43:12 ray-desktop kernel: [ 4327.553682] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=2, B: plane=2, cursor=2, SR: plane=51, cursor=2
Mar  8 09:43:12 ray-desktop kernel: [ 4327.553687] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:43:17 ray-desktop kernel: [ 4332.315950] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:43:21 ray-desktop kernel: [ 4336.605457] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:43:27 ray-desktop kernel: [ 4343.134308] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:43:28 ray-desktop kernel: [ 4343.217508] [drm:drm_mode_addfb2] [FB:46]
Mar  8 09:43:28 ray-desktop kernel: [ 4343.237526] [drm:drm_mode_addfb2] [FB:47]
Mar  8 09:43:28 ray-desktop kernel: [ 4343.404311] [drm:drm_mode_addfb2] [FB:48]
Mar  8 09:43:39 ray-desktop kernel: [ 4354.223073] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:43:46 ray-desktop kernel: [ 4361.683700] [drm:drm_mode_addfb2] [FB:46]
Mar  8 09:43:47 ray-desktop kernel: [ 4363.222697] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:43:52 ray-desktop kernel: [ 4367.492614] [drm:drm_mode_addfb2] [FB:47]
Mar  8 09:43:58 ray-desktop kernel: [ 4373.658374] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:44:00 ray-desktop kernel: [ 4375.443599] [drm:drm_mode_addfb2] [FB:46]
Mar  8 09:44:09 ray-desktop kernel: [ 4384.694340] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:44:09 ray-desktop kernel: [ 4384.710745] [drm:drm_mode_addfb2] [FB:47]
Mar  8 09:44:22 ray-desktop kernel: [ 4397.637399] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:44:25 ray-desktop kernel: [ 4400.741757] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:44:27 ray-desktop kernel: [ 4402.726987] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:44:27 ray-desktop kernel: [ 4402.744098] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:44:37 ray-desktop kernel: [ 4413.249817] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:44:47 ray-desktop kernel: [ 4422.968763] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.001168] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 6
Mar  8 09:44:54 ray-desktop kernel: [ 4430.001173] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 10
Mar  8 09:44:54 ray-desktop kernel: [ 4430.001177] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=6, B: plane=2, cursor=2, SR: plane=51, cursor=10
Mar  8 09:44:54 ray-desktop kernel: [ 4430.001182] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:44:54 ray-desktop kernel: [ 4430.042514] [drm:drm_mode_addfb2] [FB:48]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.058329] [drm:drm_mode_addfb2] [FB:49]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.075287] [drm:drm_mode_addfb2] [FB:50]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.092659] [drm:drm_mode_addfb2] [FB:51]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.109440] [drm:drm_mode_addfb2] [FB:52]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.125369] [drm:drm_mode_addfb2] [FB:53]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.142871] [drm:drm_mode_addfb2] [FB:54]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.159298] [drm:drm_mode_addfb2] [FB:55]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.169468] [drm:intel_crtc_cursor_set_obj] cursor off
Mar  8 09:44:54 ray-desktop kernel: [ 4430.169479] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 2
Mar  8 09:44:54 ray-desktop kernel: [ 4430.169483] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 2
Mar  8 09:44:54 ray-desktop kernel: [ 4430.169486] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=2, B: plane=2, cursor=2, SR: plane=51, cursor=2
Mar  8 09:44:54 ray-desktop kernel: [ 4430.169490] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:44:54 ray-desktop kernel: [ 4430.175327] [drm:drm_mode_addfb2] [FB:46]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.192360] [drm:drm_mode_addfb2] [FB:56]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.209190] [drm:drm_mode_addfb2] [FB:57]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.226080] [drm:drm_mode_addfb2] [FB:58]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.242318] [drm:drm_mode_addfb2] [FB:59]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.258232] [drm:drm_mode_addfb2] [FB:60]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.274703] [drm:drm_mode_addfb2] [FB:61]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.291413] [drm:drm_mode_addfb2] [FB:62]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.308201] [drm:drm_mode_addfb2] [FB:63]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.327979] [drm:drm_mode_addfb2] [FB:64]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.345819] [drm:drm_mode_addfb2] [FB:65]
Mar  8 09:44:54 ray-desktop kernel: [ 4430.369626] [drm:drm_mode_addfb2] [FB:66]
Mar  8 09:44:55 ray-desktop kernel: [ 4431.251777] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 6
Mar  8 09:44:55 ray-desktop kernel: [ 4431.251787] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 10
Mar  8 09:44:55 ray-desktop kernel: [ 4431.251794] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=6, B: plane=2, cursor=2, SR: plane=51, cursor=10
Mar  8 09:44:55 ray-desktop kernel: [ 4431.251801] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:44:57 ray-desktop kernel: [ 4432.768173] [drm:drm_mode_addfb2] [FB:37]
Mar  8 09:44:57 ray-desktop kernel: [ 4433.028731] [drm:drm_mode_addfb2] [FB:45]
Mar  8 09:44:57 ray-desktop kernel: [ 4433.045945] [drm:drm_mode_addfb2] [FB:46]
Mar  8 09:44:59 ray-desktop kernel: [ 4435.115462] [drm:drm_mode_addfb2] [FB:47]
Mar  8 09:44:59 ray-desktop kernel: [ 4435.132120] [drm:drm_mode_addfb2] [FB:48]
Mar  8 09:44:59 ray-desktop kernel: [ 4435.151558] [drm:drm_mode_addfb2] [FB:49]
Mar  8 09:44:59 ray-desktop kernel: [ 4435.165321] [drm:drm_mode_addfb2] [FB:50]
Mar  8 09:44:59 ray-desktop kernel: [ 4435.181317] [drm:drm_mode_addfb2] [FB:51]
Mar  8 09:44:59 ray-desktop kernel: [ 4435.198153] [drm:drm_mode_addfb2] [FB:52]
Mar  8 09:45:17 ray-desktop kernel: [ 4453.039454] [drm:i915_gem_open] 
Mar  8 09:45:18 ray-desktop kernel: [ 4453.612393] [drm:i915_gem_context_create_ioctl] HW context 1 created
Mar  8 09:45:18 ray-desktop kernel: [ 4453.616257] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed
Mar  8 09:45:21 ray-desktop kernel: [ 4456.925566] [drm:intel_crtc_cursor_set_obj] cursor off
Mar  8 09:45:21 ray-desktop kernel: [ 4456.925578] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 2
Mar  8 09:45:21 ray-desktop kernel: [ 4456.925582] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 2
Mar  8 09:45:21 ray-desktop kernel: [ 4456.925585] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=2, B: plane=2, cursor=2, SR: plane=51, cursor=2
Mar  8 09:45:21 ray-desktop kernel: [ 4456.925589] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:45:21 ray-desktop kernel: [ 4457.133981] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 6
Mar  8 09:45:21 ray-desktop kernel: [ 4457.133988] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 10
Mar  8 09:45:21 ray-desktop kernel: [ 4457.133992] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=6, B: plane=2, cursor=2, SR: plane=51, cursor=10
Mar  8 09:45:21 ray-desktop kernel: [ 4457.133997] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 09:49:53 ray-desktop kernel: [ 4729.068579] [drm:i915_gem_open] 
Mar  8 09:49:53 ray-desktop kernel: [ 4729.165197] [drm:i915_gem_context_create_ioctl] HW context 1 created
Mar  8 09:49:53 ray-desktop kernel: [ 4729.172257] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed
Mar  8 09:51:17 ray-desktop AptDaemon: INFO: Quitting due to inactivity
Mar  8 09:51:17 ray-desktop AptDaemon: INFO: Quitting was requested
Mar  8 09:53:07 ray-desktop kernel: [ 4924.026964] perf interrupt took too long (4388 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
Mar  8 10:04:03 ray-desktop kernel: [ 5580.985453] [drm:intel_crtc_cursor_set_obj] cursor off
Mar  8 10:04:03 ray-desktop kernel: [ 5580.985469] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 2
Mar  8 10:04:03 ray-desktop kernel: [ 5580.985475] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 2
Mar  8 10:04:03 ray-desktop kernel: [ 5580.985481] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=2, B: plane=2, cursor=2, SR: plane=51, cursor=2
Mar  8 10:04:03 ray-desktop kernel: [ 5580.985489] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 10:09:02 ray-desktop CRON[4528]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -x /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] && /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime))
Mar  8 10:17:01 ray-desktop CRON[4544]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Mar  8 10:39:01 ray-desktop CRON[4564]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -x /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] && /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime))
Mar  8 10:51:27 ray-desktop kernel: [ 8431.177109] [drm:g4x_check_srwm] SR watermark: display plane 51, cursor 6
Mar  8 10:51:27 ray-desktop kernel: [ 8431.177118] [drm:g4x_check_srwm] SR watermark: display plane 100, cursor 10
Mar  8 10:51:27 ray-desktop kernel: [ 8431.177125] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=150, cursor=6, B: plane=2, cursor=2, SR: plane=51, cursor=10
Mar  8 10:51:27 ray-desktop kernel: [ 8431.177133] [drm:intel_set_memory_cxsr] memory self-refresh is enabled
Mar  8 10:51:28 ray-desktop kernel: [ 8431.179894] [drm:intel_set_memory_cxsr] memory self-refresh is disabled
Mar  8 10:51:28 ray-desktop kernel: [ 8431.214810] [drm:intel_set_memory_cxsr] memory self-refresh is disabled
Mar  8 10:51:28 ray-desktop kernel: [ 8431.214822] [drm:valleyview_update_wm] Setting FIFO watermarks - A: plane=2, cursor=2, B: plane=2, cursor=2, SR: plane=0, cursor=0
Mar  8 10:51:28 ray-desktop kernel: [ 8431.214831] [drm:intel_display_power_put] disabling dpio-common
Mar  8 10:51:28 ray-desktop kernel: [ 8431.238785] [drm:intel_display_power_put] disabling display
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255040] [drm:check_encoder_state] [ENCODER:29:DAC-29]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255050] [drm:check_encoder_state] [ENCODER:30:TMDS-30]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255055] [drm:check_encoder_state] [ENCODER:35:TMDS-35]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255060] [drm:check_crtc_state] [CRTC:20]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255066] [drm:check_crtc_state] [CRTC:25]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255108] [drm:drm_mode_setcrtc] [CRTC:20]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255114] [drm:intel_crtc_set_config] [CRTC:20] [NOFB]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255122] [drm:intel_set_config_compute_mode_changes] computed changes for [CRTC:20], mode_changed=1, fb_changed=0
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255127] [drm:intel_modeset_stage_output_state] [CONNECTOR:28:VGA-1] to [NOCRTC]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255132] [drm:intel_modeset_stage_output_state] encoder changed, full mode switch
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255136] [drm:intel_modeset_stage_output_state] crtc changed, full mode switch
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255141] [drm:intel_modeset_stage_output_state] crtc disabled, full mode switch
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255147] [drm:intel_modeset_affected_pipes] set mode pipe masks: modeset: 0, prepare: 0, disable: 1
Mar  8 10:51:28 ray-desktop kernel: [ 8431.255159] [drm:intel_display_power_get] enabling display
Mar  8 10:51:28 ray-desktop kernel: [ 8431.279019] [drm:i915_redisable_vga_power_on] Something enabled VGA plane, disabling it
Mar  8 10:51:28 ray-desktop kernel: [ 8431.311005] [drm:vlv_update_cdclk] Current CD clock rate: 200000 kHz
Mar  8 10:51:28 ray-desktop kernel: [ 8431.311016] [drm:intel_display_power_put] disabling display
Mar  8 10:51:28 ray-desktop kernel: [ 8431.334986] [drm:check_encoder_state] [ENCODER:29:DAC-29]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.334995] [drm:check_encoder_state] [ENCODER:30:TMDS-30]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.335001] [drm:check_encoder_state] [ENCODER:35:TMDS-35]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.335006] [drm:check_crtc_state] [CRTC:20]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.335011] [drm:check_crtc_state] [CRTC:25]
Mar  8 10:51:28 ray-desktop kernel: [ 8431.335052] [drm:intel_crtc_cursor_set_obj] cursor off
Mar  8 11:09:01 ray-desktop CRON[4605]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -x /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] && /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime))
Mar  8 11:17:01 ray-desktop CRON[4620]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Mar  8 11:33:31 ray-desktop kernel: [10959.173242] perf interrupt took too long (5003 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
Mar  8 11:39:01 ray-desktop CRON[4631]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -x /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] && /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime))
Mar  8 12:09:01 ray-desktop CRON[4652]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -x /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] && /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime))
Mar  8 12:17:01 ray-desktop CRON[4666]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Mar  8 12:39:01 ray-desktop CRON[4680]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -x /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] && /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime))
Mar  8 12:50:36 ray-desktop rsyslogd: [origin software="rsyslogd" swVersion="7.4.4" x-pid="660" x-info="http://www.rsyslog.com"] start
user695695
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  • /var/logs/syslog might not be the proper log. Vishnu's link lists useful instructions. You also don't know whether your mouse and keyboard freeze, maybe your screen stop refresh but everything else is fine. – Tianren Liu Mar 08 '16 at 22:51

2 Answers2

1

Try troubleshooting it with a little help from here.

Vishnu N K
  • 595
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  • Thanks, but those instructions are more than I can handle. Any noob ways to fix the error? any default software I can disable that might be causing this? – user695695 Mar 08 '16 at 18:51
  • @VishnuNK 's guide in the comment is about boot repair, which doesn't seems to be related. – Tianren Liu Mar 08 '16 at 22:43
0

Alt+Ctrl+F1 would lead you to a full functional command line interface, you could login, do whatever you want. And it's much more stable than the graphical part of Ubuntu. Alt+Ctrl+F7 would takes you back to the graphical interface.

Although the GUI freezes, you can still use the command line interface. This enable you better diagnose your system. You can kill problematic process. Restarting Xserver can solve the problem temporarily. In the worst case, you could safely shutdown your computer.

Community
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Tianren Liu
  • 631