Ugrade abortion

[Bret Busby]

On 19/01/2022, Bret Busby <bret.busby at gmail.com> wrote:
> Hello.
>
> Tried to perform system upgrade from UbuntuMATE 21.04 to 21.10, as I
> believed (quite wrongly, it seems) that 21.10 should have stabilised
> by now.
>
> I did this using the Software Updater application, after updating
> 21.04 ("Your system is up to date. However, a new version is
> available; 21.10 . <Update> <Okay>" (or, something to that effect) ).
>
> About 1230 packages were downloaded, then, the version upgrade began
> installing the packages.
>
> After a while, the Software Updater crashed, displaying only the error
> message
> "
> Could not install the upgrades
> The upgrade has aborted. Your system could be in an unusable state. A
> recovery will run now (dpkg --configure -a)
> "
>
> Tried getting a screenshot, but the Take Screenshot application will
> not save the screenshot, after the abortion.
>
> Then, clicking the <Close> button,  the following is displayed.
>
> "
> Upgrade complete
> The upgrade has completed but there were errors during the upgrade
> process. <Close>
> "
>
> Then, upon clicking "Close", the underlying window, that displayed
> some information about one of the errors, disappeared.
>
> Is Ubuntu 21.10 like Debian Experimental, by design, as well as in
> practice?
>
>
> --
> Bret Busby
> Armadale
> West Australia
> (UTC+0800)
> ..............
>

The system is now apparently broken.

Whilst I can load Thunderbird on it, and, view messages, I can not now
send messages, having tried to send a reply to the message above,
which reply includes a response to an command that I tried to run.

In trying to apply the mv command, to rename the version of
/etc/apt/sources.list, that was generated by the abortion, I get the
response, as I do for any command that I try to run in that directory,
using sudo; that it is a Read-only file system.

So, now, it is apparently broken.

-- 
Bret Busby
Armadale
West Australia
(UTC+0800)
..............