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This morning my machine running Fedora 22 was in a state of shutdown showing, IIRC, something like the following, in fullscreen white on black terminal:

[Rebooting] ... System halted.

After holding the power button and rebooting I am looking to determine what caused this unwanted reboot. Looking at some logs I know that it was up until at least Sunday 14:00. Is there more information available somewhere in the system? Which process initiated shutdown? Was it a kernel panic, a script, which user, etc?

I don't know of any hardware problem or automatic update procedures. It's a few years old desktop computer that also runs a few cron jobs. It was recently upgraded to a clean Fedora 22 and had been running fine so far.

Using sudo journalctl -b -1, I can see systemd intiating shutdown around 17:36, followed by the shutdown sequence precisely 5 minutes later.

There is also the NetworkManager checking connectivity and failing repeatedly around the same time. Here is an extract of the log around that time:

Dec 20 17:20:49 <myhostname> NetworkManager[844]: <info> connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Impossible de se connecter : Le réseau n'est pas accessible' Dec 20 17:25:49 <myhostname> NetworkManager[844]: <info> connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Impossible de se connecter : Le réseau n'est pas accessible' Dec 20 17:30:49 <myhostname> NetworkManager[844]: <info> connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Impossible de se connecter : Le réseau n'est pas accessible' Dec 20 17:35:49 <myhostname> NetworkManager[844]: <info> connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Impossible de se connecter : Le réseau n'est pas accessible' Dec 20 17:36:53 <myhostname> systemd-shutdownd[16731]: Creating /run/nologin, blocking further logins... Dec 20 17:40:49 <myhostname> NetworkManager[844]: <info> connectivity: check for uri 'http://fedoraproject.org/static/hotspot.txt' failed with 'Impossible de se connecter : Le réseau n'est pas accessible' Dec 20 17:41:53 <myhostname> systemd[1]: Stopping Manage Sound Card State (restore and store)... Dec 20 17:41:53 <myhostname> systemd[1]: Stopping LVM2 PV scan on device 8:2... Dec 20 17:41:53 <myhostname> systemd[1]: Stopping Restore /run/initramfs on shutdown... Dec 20 17:41:53 <myhostname> systemd[1]: Stopped Session c1 of user gdm. ... etc (shutdown)

Here is the output of lspci:

00:00.0 Host bridge: Intel Corporation 5520/5500/X58 I/O Hub to ESI Port (rev 13) 00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) 00:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) 00:07.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) 00:10.0 PIC: Intel Corporation 7500/5520/5500/X58 Physical and Link Layer Registers Port 0 (rev 13) 00:10.1 PIC: Intel Corporation 7500/5520/5500/X58 Routing and Protocol Layer Registers Port 0 (rev 13) 00:11.0 PIC: Intel Corporation 7500/5520/5500 Physical and Link Layer Registers Port 1 (rev 13) 00:11.1 PIC: Intel Corporation 7500/5520/5500 Routing & Protocol Layer Register Port 1 (rev 13) 00:14.0 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub System Management Registers (rev 13) 00:14.1 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13) 00:14.2 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13) 00:15.0 PIC: Intel Corporation 7500/5520/5500/X58 Trusted Execution Technology Registers (rev 13) 00:1a.0 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 00:1a.1 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 00:1a.2 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 00:1a.7 USB controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller 00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1 00:1c.5 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 6 00:1d.0 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 00:1d.1 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 00:1d.2 USB controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 00:1d.7 USB controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) 00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller 00:1f.2 RAID bus controller: Intel Corporation SATA Controller [RAID mode] 01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe (rev 10) 0f:00.0 VGA compatible controller: NVIDIA Corporation GF108GL [Quadro 600] (rev a1) 0f:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1) 37:05.0 FireWire (IEEE 1394): LSI Corporation FW322/323 [TrueFire] 1394a Controller (rev 70) 3f:00.0 Host bridge: Intel Corporation Xeon 5500/Core i7 QuickPath Architecture Generic Non-Core Registers (rev 05) 3f:00.1 Host bridge: Intel Corporation Xeon 5500/Core i7 QuickPath Architecture System Address Decoder (rev 05) 3f:02.0 Host bridge: Intel Corporation Xeon 5500/Core i7 QPI Link 0 (rev 05) 3f:02.1 Host bridge: Intel Corporation Xeon 5500/Core i7 QPI Physical 0 (rev 05) 3f:03.0 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller (rev 05) 3f:03.1 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Target Address Decoder (rev 05) 3f:03.4 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Test Registers (rev 05) 3f:04.0 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 0 Control Registers (rev 05) 3f:04.1 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 0 Address Registers (rev 05) 3f:04.2 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 0 Rank Registers (rev 05) 3f:04.3 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 0 Thermal Control Registers (rev 05) 3f:05.0 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 1 Control Registers (rev 05) 3f:05.1 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 1 Address Registers (rev 05) 3f:05.2 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 1 Rank Registers (rev 05) 3f:05.3 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 1 Thermal Control Registers (rev 05) 3f:06.0 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 2 Control Registers (rev 05) 3f:06.1 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 2 Address Registers (rev 05) 3f:06.2 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 2 Rank Registers (rev 05) 3f:06.3 Host bridge: Intel Corporation Xeon 5500/Core i7 Integrated Memory Controller Channel 2 Thermal Control Registers (rev 05)
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  • I'd start by reading the end of the journal from that boot... Commented Dec 21, 2015 at 8:12
  • Any logs at all, any hardware you know it is flaky (wifi?), any automatic update procedures, how old is the hardware, what does your machine do? Commented Dec 21, 2015 at 8:27
  • @RuiFRibeiro I added some info in the last paragraph. Commented Dec 21, 2015 at 8:50
  • you have systemd so you can see the logs until the reboot with sudo journalctl -b -1. Commented Dec 21, 2015 at 10:16
  • @meuh Thanks. I've looked at the logs and added information to my question. Commented Dec 21, 2015 at 10:43

1 Answer 1

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OK so it turns out a colleague accidentally ran a delayed shutdown command in the wrong terminal. I'm accepting this answer but it would still be interesting if there had been a way to figure it out from the system.

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