How do I clear a lock so as to allow an upgrade
J. Paul Bissonnette
jpaulb at eastlink.ca
Sat Nov 12 23:53:15 UTC 2022
Is another program like synaptic running?
On Sun, 13 Nov 2022 07:50:19 +0800
bret at busby.net wrote:
> Hello.
>
> Having run
> sudo apt update
> when I try to run
> sudo apt full-upgrade -y
> I get the following error.
>
> "
> Sun Nov 13 07:33:46 bret at bret-OptiPlex-9030-AIO:~$sudo apt
> full-upgrade -y Waiting for cache lock: Could not get lock
> /var/lib/dpkg/lock-frontend. It is held by process 48429 (apt)
> Waiting for cache lock: Could not get lock
> /var/lib/dpkg/lock-frontend. It is held by process 48429 (apt)
> Waiting for cache lock: Could not get lock
> /var/lib/dpkg/lock-frontend. It is held by process 48429 (apt)
> Waiting for cache lock: Could not get lock
> /var/lib/dpkg/lock-frontend. It is held by process 48429 (apt)
> Waiting for cache lock: Could not get lock
> /var/lib/dpkg/lock-frontend. It is held by process 48429 (apt)
> Waiting for cache lock: Could not get lock
> /var/lib/dpkg/lock-frontend. It is held by process 48429 (apt)
> ^Citing for cache lock: Could not get lock
> /var/lib/dpkg/lock-frontend. It is held by process 48429 (apt)... 6s
> Sun Nov 13 07:34:28 bret at bret-OptiPlex-9030-AIO:~$^C
> "
>
> How do I clear the lock, so as to allow the upgrade to proceed?
>
> I have run
> sudo kill 48429
> and that did not fix the problem, and I have rebooted the system, and
> that did not clear the lock.
>
> Also,
>
> "
> Sun Nov 13 07:44:11 bret at bret-OptiPlex-9030-AIO:~$sudo kill -9 48429
> Sun Nov 13 07:44:23 bret at bret-OptiPlex-9030-AIO:~$ps -ax | grep 48429
> 48429 pts/1 Z 0:00 [apt] <defunct>
> 248169 pts/3 S+ 0:00 grep --color=auto 48429
> Sun Nov 13 07:44:28 bret at bret-OptiPlex-9030-AIO:~$
> "
>
> I assume that the 'Z' means zombie, as it is one of the undead, and
> cannot be killed (I understand that kill -9 is the penultimate kill
> command; the kill of last resort, like a nuke).
>
> So, apart from reinstalling the system, to get to do an upgrade, how
> do I clear the lock?
>
> Thank you in anticipation.
> ..
> Bret Busby
> Armadale
> Western Australia
> (UTC+0800)
> .................
>
>
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