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geras
Asked: 2018-08-01 04:51:25 +0800 CST

Why has a lot of software disappeared from Ubuntu Software in Ubuntu 16.04? [duplicate]

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For example there is no VirtualBox, Texmaker, LyX, calibre, Redshift.

I have ran sudo apt update and sudo apt full-upgrade. I have not used BleachBit. The only thing wrong in my computer seems to be that I often get an error message like this one when I run sudo apt update:

AppStream system cache was updated, but problems were found: Metadata files have errors: /var/cache/app-info/xmls/fwupd.xml
Reading package lists... Done
E: Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then appstreamcli refresh-cache > /dev/null; fi'
E: Sub-process returned an error code

, which I would also like to fix by the way.

Things I tried that did not help:

As advised in Library corruption error during apt-get update, I ran sudo apt install --reinstall libappstream3 and then sudo apt purge libappstream3, and then I also restarted my computer. Then I ran sudo apt install --reinstall libappstream3 again sudo apt install --reinstall libappstream4 and I restarted the computer again.

package-management updates software-center apt 16.04

1 Answers

  1. Best Answer

    It might be enough to just wait for a fix to this bug to be released.

    In the meantime here is a temporary solution:

    Replace & with & in line 265 in /var/cache/app-info/xmls/fwupd.xml as described here. Reboot.

    This solution is temporary because the file reverts to the original 'just &'-containing version after some time.

    This is to fix all problems in my question.

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