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Answers

Answers

Got a burning question about open source or the kernel? Whatever your level, email it to lxf.answers@futurenet.com for a solution and suggestions from the eminent Dr Bidwell. I got news for you? Q Have It’s hard to find a good RSS reader

nowadays. Liferea works, but looks a little dated. It seems like every other client has its own quirks and niggles. There are lots of hosted services, many of which are inferior to the once ever-sopopular, now shuttered Google Reader service. Feedly is popular, but if I’m going to use a hosted service I’d rather it’d be one that I hosted myself. I’ve recently upgraded my Nextcloud instance to 13.0 and thought I’d try its News app. It works very well, I can use the Android app to check feeds on my phone, and I can use Feedreader on my desktop. However, I’m seeing this strange error in the News app itself: Non UTF-8 charset for MySQL/MariaDB database detected! Learn how to convert

your database to utf8mb4 (make a backup beforehand) . The error links to a

StackExchange post with very involved instructions for manually converting SQL tables. This doesn’t seem like a good way of doing things, so I beseech any Nextcloud gurus at LXF Towers for a more helpful solution. Why do I even need this weird character set anyway? Bonnie Archwell

A

We also like the Nextcloud News app and have seen this error. We followed the instructions in that StackExchange post, but to no avail. The issue at stake is the four-byte UTF8 character set, which encodes emoji. Pictures may be worth a thousand words, but the codepoints representing emoji need only four bytes. If you don’t want to

Traditionalists may prefer to browse software using Synaptic or similar, rather than the Ubuntu Software app.

Open (source) sesame Q

From the Roundup piece in LXF233 I think the article missed a central issue: I would like the password solution to work well on my Android, Windows and Linux desktop platforms. As some of the candidates are use cloud storage, I imagine that multi-platform support is a design goal. Perhaps there are as yet no OSS solutions, but you’ve given me a place to start. Perhaps there’s room here for a follow-up article? Enjoying the read. Colm, by email

14     LXF236 May 2018

You make a good point. I’ve just done a large-scale password reset, which took a Very Long Time. A lot of this was spent finding all the sites where I still had active accounts. Once that list was compiled I spent a lot of time looking for a quality FLOSS password manager and eventually settled on Padlock. You can securely store your data using the Padlock Cloud service, either on its cloud storage or your own. You could also use a homebrew solution such as Duplicity to do arrange your own secure storage.

A

Jonni Bidwell Attempts to fix your Tuxbased faults.

see them and don’t mind the error then just ignore it. But if you want to see the upside-down face and other expressions in your news feeds then read on. Back up your data first, please. You can use the Next/Owncloud’s builtin occ utility to change the character set setting, and then set your Nextcloud instance to Maintenance mode to update the tables. Before we do this though, we need to make some adjustments to the database. The wider character set needs a larger key prefix, otherwise scary errors will result. So add the following settings to the InnoDB section of your MySQL/Mariadb configuration (on Debian the default server config file is /etc/mysql/mariadb. conf.d/50-server.cnf) innodb_large_prefix=on innodb_file_format=barracuda innodb_file_per_table=true Now restart the SQL server systemctl restart mysqld and invoke occ as follows $ cd /var/www/nextcloud $ sudo -u www-data php occ config:system:set mysql.utf8mb4 --type boolean --value=”true” $ sudo -u www-data php occ maintenance:repair

That should be it. If maintenance mode is still active (Nextcloud will tell you this when you try and log in), then normalcy can be restored by replacing the maintenance argument in the last command with maintenance:mode --off

prefer the remix Q II’ve been following the notes on the remix. I’ve managed to install the standard Ubuntu option. This is the default Gnome desktop which is now working fine. Up until now I’ve used the Unity desktop in Ubuntu so this is all new to me. How do I proceed from here? No choice of desktops is offered in the applications list! And I can’t seem to search from the Ubuntu Software application! What I’d like to do with Gnome is to install a Windows chess program (Fritz 8) on Ubuntu 17.10. I installed PlayOnLinux using the terminal. It now

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Linux Format 236 (Sampler)  

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Linux Format 236 (Sampler)  

You can subscribe to this magazine @ www.myfavouritemagazines.co.uk