I also tried sudo apt autoremove but It still is not enough. I get this problem everytime I update linux mint. I think that this is the problem but I don't know how to address it.
I also got this problem everytime I open update manager
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An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://dl.winehq.org/wine-builds/ubuntu bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672FAn error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://dl.winehq.org/wine-builds/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672FFailed to fetch https://dl.winehq.org/wine-builds/ubuntu/dists/bionic/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672FFailed to fetch https://dl.winehq.org/wine-builds/ubuntu/dists/xenial/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672FSome index files failed to download. They have been ignored, or old ones used instead.
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cd $HOME
rm -r .wine
rm .config/menus/applications-merged/wine*
rm -r .local/share/applications/wine
rm .local/share/desktop-directories/wine*
rm .local/share/icons/????_*.xpm
Two problems:
1. PC is slow because 512MB left in root.
2. update manager gives me that error above.
I don't put many softwares inside my linux mint. only the ones I need, e.g.
- visual studio code
- mongodb
- vlc
- spotify
- chrome
- transmission
other than that, I have pictures and videos and files saved in the documents,downloads, and video folders. but is not related to root.
Can someone help ?