power button still on after shutdown in ubuntu 16.04 LTS

Asked by anupamjamatia@gmail.com on 2018-12-03

Hi , I am facing a strange problem in Ubuntu 16.04 LTS. After I gave the shutdown command, the system shut down but the power is on. i have to press the physical key and then the power button off. May I know the reason and any solution for that, a screenshot is attached here https://pasteboard.co/HQ31cJD.jpg
please find the dmesg here http://pastebin.tlhiv.org/mh_bjrDJ and also the syslog information http://pastebin.tlhiv.org/bEObDT2o

my system configuration
uname -a
Linux anupam-OMEN-HP 4.15.0-29-generic #31~16.04.1-Ubuntu SMP Wed Jul 18 08:54:04 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 12
On-line CPU(s) list: 0-11
Thread(s) per core: 2
Core(s) per socket: 6
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 158
Model name: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
Stepping: 10
CPU MHz: 981.531
CPU max MHz: 4100.0000
CPU min MHz: 800.0000
BogoMIPS: 4416.00
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 9216K
NUMA node0 CPU(s): 0-11
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 syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp

$ cat /proc/meminfo
MemTotal: 16341812 kB
MemFree: 11329080 kB
MemAvailable: 13309296 kB
Buffers: 193864 kB
Cached: 1996060 kB
SwapCached: 0 kB
Active: 3262708 kB
Inactive: 1186024 kB
Active(anon): 2267144 kB
Inactive(anon): 68440 kB
Active(file): 995564 kB
Inactive(file): 1117584 kB
Unevictable: 752 kB
Mlocked: 752 kB
SwapTotal: 16693244 kB
SwapFree: 16693244 kB
Dirty: 580 kB
Writeback: 0 kB
AnonPages: 2259724 kB
Mapped: 541132 kB
Shmem: 76788 kB
Slab: 292576 kB
SReclaimable: 211272 kB
SUnreclaim: 81304 kB
KernelStack: 18432 kB
PageTables: 65936 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 24864148 kB
Committed_AS: 11737800 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 341312 kB
DirectMap2M: 7964672 kB
DirectMap1G: 9437184 kB

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Codename: xenial

$ lspci
00:00.0 Host bridge: Intel Corporation Device 3ec4 (rev 07)
00:01.0 PCI bridge: Intel Corporation Sky Lake PCIe Controller (x16) (rev 07)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 07)
00:08.0 System peripheral: Intel Corporation Sky Lake Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Device a379 (rev 10)
00:14.0 USB controller: Intel Corporation Device a36d (rev 10)
00:14.2 RAM memory: Intel Corporation Device a36f (rev 10)
00:14.3 Network controller: Intel Corporation Device a370 (rev 10)
00:16.0 Communication controller: Intel Corporation Device a360 (rev 10)
00:17.0 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 10)
00:1b.0 PCI bridge: Intel Corporation Device a32c (rev f0)
00:1d.0 PCI bridge: Intel Corporation Device a330 (rev f0)
00:1d.5 PCI bridge: Intel Corporation Device a335 (rev f0)
00:1d.7 PCI bridge: Intel Corporation Device a337 (rev f0)
00:1f.0 ISA bridge: Intel Corporation Device a30d (rev 10)
00:1f.3 Audio device: Intel Corporation Device a348 (rev 10)
00:1f.4 SMBus: Intel Corporation Device a323 (rev 10)
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device a324 (rev 10)
01:00.0 VGA compatible controller: NVIDIA Corporation Device 1be1 (rev a1)
3b:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd Device a804
3c:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 16)
3d:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)

Please help me out.

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What is the output of:

sudo dmidecode -t 1


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