Ubuntu 14.04 - crontab @reboot hang my PC

Question

Trying to resolving the bug for KWORKERS HIGH CPU, as suggested in this answer. I put in my crontab the row:

@reboot echo "disable" > /sys/firmware/acpi/interrupts/gpe06

After the reboot, the system doesn't start. Also in single user mode it doesn't start.

I rebooted my PC with the option:

init=/bin/bash

and I removed the row in the root crontab but the system doesn't start.

add the full path of echo command. $ which echo /bin/echo So : sudo crontab -e Then add the line: @reboot /bin/echo "disable" > /sys/firmware/acpi/interrupts/gpe06 — Maythux, Jul 22, 2015 at 11:05
Did you add that line to your crontab or to root's? What bug are you talking about? What is wrong with your system? What are the symptoms? "It doesn't start"? OK, where does it stop? Does it not even turn on? Is the screen black? Pleaseedit your question and give us the information needed to answer it. — terdon, Jul 22, 2015 at 11:25

SDsolar · Accepted Answer · 2018-05-04 02:44:35Z

1

The simplest method to do a programmed reboot (although I can't think of a use case), is to create a simple script file like so:

(shebang)/bin/bash
sudo init 6

And schedule it as a normal cron job using

crontab -e

(back to the old school way)

answered May 4, 2018 at 2:44

SDsolar

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Greg · Accepted Answer · 2015-12-02 12:22:13Z

0

answered Dec 2, 2015 at 12:22

Greg

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Prisma · Accepted Answer · 2018-03-03 07:22:32Z

-2

Use sudo to run @reboot - 14.04 uses initd instead of systemd and initd requires root / sudo to reboot, while systemd does not.

answered Mar 3, 2018 at 7:22

Prisma

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