Computer reboots instead of shutting down.

Question

Hello.
My new lenovo notebook has some issues. Selecting shutdown from any software menu will not actualy shutdown the machine- it  looks  at first as though it is going to shutdown, OS and filesystems unloaded etc, even the fans start clicking off. But as soon as the PSU fan is just about dead still the machine reboots.
Entering "sudo shutdown -h now" , "sudo init 0" or other CLI command does the same thing.
Pressing and holding 5+ seconds the hardware power button on the front panel does a proper shutdown.
This is a new notebook( purchased with free dos), freshly loaded with the current Linux Mint 17.1 Rebecca Cinnamon 64 bits, . This problem exists also booting from the LiveUSB disk . I tried several other versions of Ubuntu( 12.04 and 14.04) with same issues.
I do not get this problem when booting from the same LM 17.1 Rebbeca LiveUSB disk on a different machine (other laptop). So it appears to be an interaction between this new version of LM and my new notebook.
My new notebook (Lenovo B5400) has an Procesor Intel® Core™ i3-4000M 2.4GHz Haswell, 4GB, 1TB + 8GB SSH, GeForce GT 720M 1GB( integrated Intel HD 4600) .
For completeness, here is the output of lspci:
ionutzzz@My-Lenovo ~ $ lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:01.1 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x8 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d4)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
01:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] (rev a1)
04:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
ionutzzz@My-Lenovo ~ $
Any help is appreciated. Thank you in advance.

Answer 1

wizulis wrote:Try killing X and then shutdown from terminal. Had this problem with plymounth, solved by just not using it.
Good call. I'd forgotten this, but I installed plymouth like a week ago. I guess I hadn't shutdown my computer since then, and so I didn't notice the reboot bug till yesterday. To automate the process, I tried adding the following to /etc/rc.local.shutdown and then to /etc/rc.shutdown:
# Shutdown X to avoid plymouth reboot bug
/etc/rc.d/slim stop
This caused my system to hang on shutdown. I think I'm just going to submit a bug report to the plymouth guys and wait for a patch since I don't often shutdown my computer anyway (suspend works fine).
Thanks all for your replies