On Mon, Nov 18, 2013 at 05:29:27PM +0000, Tom H wrote: > On Mon, Nov 18, 2013 at 4:41 PM, Suvayu Ali <fatkasuvayu+linux@xxxxxxxxx> wrote: > > On Mon, Nov 18, 2013 at 03:43:57PM +0000, Tom H wrote: > >> On Mon, Nov 18, 2013 at 3:14 PM, Suvayu Ali <fatkasuvayu+linux@xxxxxxxxx> wrote: > >>> > >>> I have been very frustrated with journalctl. The manual page is very > >>> unhelpful in that regard. For example the other day, I wanted to > >>> investigate why my laptop shutdown suddenly (I think it was > >>> overheating), but there was no reasonable way for me to filter the cpu > >>> specific messages. Could you give some pointers how I can do that? I > >>> would be very grateful. > >> > >> Perhaps "journalctl _KERNEL_SUBSYSTEM=<subsystem>" > >> > >> acpi for power? > > > > That does filter the output, but not the messages I was looking for. > > Looking at /var/log/messages tells me the lines should be something like > > this: > > > > kernel: [381990.959785] CPU3: Core temperature above threshold, cpu clock throttled (total events = 38) > > > > But I still can't find where it says shutting down. Anyway, what > > subsystem is the above? Also how can I limit it to kernel messages from > > all subsystems? > > > > Thanks for your response, > > You're welcome. > > "acpi" had been a guess! > > I scratched my head, read the journalctl man page, and found "-F": > > # journalctl -F _KERNEL_SUBSYSTEM > platform > scsi > pnp > pci > pci_bus > acpi On my laptop I have a few more: $ journalctl -F _KERNEL_SUBSYSTEM ieee80211 serio scsi pnp pci pci_bus acpi hid usb thermal `thermal' does the trick :-p. $ journalctl -r _KERNEL_SUBSYSTEM=thermal -- Logs begin at Fri 2013-09-20 23:52:53 CEST, end at Tue 2013-11-19 00:45:01 CET. -- Nov 14 10:08:54 kuru.dyndns-at-home.com kernel: thermal thermal_zone0: critical temperature reached(100 C),shutting down Nov 14 10:08:54 kuru.dyndns-at-home.com kernel: thermal thermal_zone0: critical temperature reached(100 C),shutting down -- Reboot -- Nov 14 09:56:17 kuru.dyndns-at-home.com kernel: thermal thermal_zone0: critical temperature reached(100 C),shutting down Nov 14 09:56:17 kuru.dyndns-at-home.com kernel: thermal thermal_zone0: critical temperature reached(100 C),shutting down Wallah! -- Suvayu Open source is the future. It sets us free. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
