I have installed 32 bit Ubuntu Linux 16.04 (Kernel 4.4.0-53-generic). I have got strange problem after running for a few hours. The system crashes with black screen, and NOTHING works(like the system is shutdown)! I then manually started the system, and checked the /var/log/syslog file, and there are several lines like below before the system crashed.
Dec 13 09:36:06 fremb0008 ntpd[1559]: Soliciting pool server 91.189.94.4 Dec 13 09:36:07 fremb0008 ntpd[1559]: Soliciting pool server 46.4.54.78 Dec 13 09:36:07 fremb0008 ntpd[1559]: Soliciting pool server 193.175.73.151 Dec 13 09:36:13 fremb0008 ntpd[1559]: Soliciting pool server 131.234.137.64 Dec 13 09:37:10 fremb0008 ntpd[1559]: Soliciting pool server 2001:638:504:2000::36 Dec 13 09:37:13 fremb0008 ntpd[1559]: Soliciting pool server 91.189.89.198 Dec 13 09:37:13 fremb0008 ntpd[1559]: Soliciting pool server 129.70.132.34 Dec 13 09:37:14 fremb0008 ntpd[1559]: Soliciting pool server 178.162.194.82 Dec 13 09:37:17 fremb0008 ntpd[1559]: Soliciting pool server 144.76.14.132 Dec 13 09:38:16 fremb0008 ntpd[1559]: Soliciting pool server 2001:a60::123:1 Dec 13 09:38:18 fremb0008 ntpd[1559]: Soliciting pool server 176.9.41.109 Dec 13 09:38:18 fremb0008 ntpd[1559]: Soliciting pool server 213.95.21.43 Dec 13 09:38:19 fremb0008 ntpd[1559]: Soliciting pool server 91.189.89.199 Dec 13 09:38:24 fremb0008 ntpd[1559]: Soliciting pool server 188.68.58.36 Dec 13 09:39:22 fremb0008 ntpd[1559]: Soliciting pool server 176.9.82.67 Dec 13 09:39:22 fremb0008 ntpd[1559]: Soliciting pool server 5.9.49.12 Dec 13 09:39:24 fremb0008 ntpd[1559]: Soliciting pool server 129.70.132.36 Dec 13 09:39:26 fremb0008 ntpd[1559]: Soliciting pool server 2001:67c:1560:8003::c7 Dec 13 09:39:30 fremb0008 ntpd[1559]: Soliciting pool server 5.9.44.47 Dec 13 09:40:28 fremb0008 ntpd[1559]: Soliciting pool server 213.172.105.106 Dec 13 09:40:29 fremb0008 ntpd[1559]: Soliciting pool server 46.4.54.78 Dec 13 09:40:29 fremb0008 ntpd[1559]: Soliciting pool server 95.142.67.61 Dec 13 09:40:30 fremb0008 ntpd[1559]: Soliciting pool server 2001:67c:1560:8003::c8 Dec 13 09:40:34 fremb0008 ntpd[1559]: Soliciting pool server 131.234.137.64
Note: the system does NOT have internet connection.
Is it normal to have this messages? I am not sure whether NTP server is crashing the system. I need your help guys!
EDIT
The output of lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0e)
and output of /proc/cpuinfo
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 55 model name : Intel(R) Celeron(R) CPU N2930 @ 1.83GHz stepping : 8 microcode : 0x829 cpu MHz : 2165.760 cache size : 1024 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fdiv_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch epb tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm ida arat bugs : bogomips : 3660.80 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 55 model name : Intel(R) Celeron(R) CPU N2930 @ 1.83GHz stepping : 8 microcode : 0x829 cpu MHz : 2165.760 cache size : 1024 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 apicid : 2 initial apicid : 2 fdiv_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch epb tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm ida arat bugs : bogomips : 3660.80 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 55 model name : Intel(R) Celeron(R) CPU N2930 @ 1.83GHz stepping : 8 microcode : 0x829 cpu MHz : 2165.760 cache size : 1024 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 4 apicid : 4 initial apicid : 4 fdiv_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch epb tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm ida arat bugs : bogomips : 3660.80 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 55 model name : Intel(R) Celeron(R) CPU N2930 @ 1.83GHz stepping : 8 microcode : 0x829 cpu MHz : 2165.760 cache size : 1024 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 6 initial apicid : 6 fdiv_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch epb tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm ida arat bugs : bogomips : 3660.80 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management:
Best Answer
Ok. You have a Bay-Trail CPU which has been known to cause issues with Ubuntu regarding sleep states.
Do the following:
sudo -H gedit /etc/default/grub
Find the line
GRUB_CMDLINE_LINUX_DEFAULT
, and add the parameterintel_idle.max_cstate=1
.Once you do this, close Gedit and run the command:
And reboot.
This is a very dirty fix. Please stay up-to-date with the latest kernels as this bug will most likely be patched in the future.