Ubuntu 20.04 Shutdown/Reboot Hangs At "Waiting for process: crond" And amdgpu process

Question

I'm Using Dell 5570 , processor : Intel i5 ,GPU1: Intel 620, GPU2: AMD 530 , OS : Ubuntu 20.04 Fresh install but this issue comes later after installing and using it for a while when i press Shutdown/Restart the system stuck on Dell logo for 1 minute then restart/shutdown, so when i press Esc it shows: ShutDown/Restart Logs

[664.198483] amdgpu : [powerplay] VI should always have 2 performance levels
[666.456075] amdgpu : [powerplay] can't get the mac of 5
[670.450885] systemd-shutdown[1] : waiting for process : crond
[672.138049] amdgpu : [powerplay] VI should always have 2 performance levels

Solution

Same problem on my Xubuntu 20.04 since 2 weeks (installed one year ago on a DELL Inspiron 15 3000 laptop but I think that there is no relation with the hardware) .

In order to find out the origin of this message displayed at shutdown

Reached target Reboot.
systemd-shutdown[1]: Waiting for process: crond

I used this command to get the cron jobs files list (ordered by date) :

find /etc/cron* -type f | xargs  ls -ltr

I discovered that the file /etc/cron.d/collect ( freshly updated ) was scheduling a weird binary named /var/tmp/crond.

My solution to disable this job was to move /etc/cron.d/collect elsewhere (in my home directory, so as to try before deleting it forever).

After 2 reboots I checked that I recovered a fast shutdown!

(can also follow these links : https://unix.stackexchange.com/a/644016/465616, https://askubuntu.com/a/1329933 )

Comments

[Sudhakar Krishnan]

Do you got any solution? If so, please update it. Thanks.