Recently, I have installed wine using

sudo aptitude install wine
, accepting proposals from the aptitude and running further commands recommended in related answers. Now, I am trying it at the same type of PC which is in the same status: freshly upgraded from Ubuntu 16.04 to 18.04. However the aptitude cannot resolve conflicts and, in the further commands, the first difference is between
as_the_root@PC1:/home/me$ sudo wget -nv https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/xUbuntu_18.04/Release.key -O Release.key
2020-04-28 00:20:19 URL:https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/xUbuntu_18.04/Release.key [1089/1089] -> "Release.key" [1]
as_the_root@PC1:/home/me$ sudo apt-key add - < Release.key
as_the_root@PC2:/home/me$ sudo wget -nv https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/xUbuntu_18.04/Release.key -O Release.key
2020-05-08 15:08:50 URL:https://download.opensuse.org/repositories/Emulators:/Wine:/Debian/xUbuntu_18.04/Release.key [1089/1089] -> "Release.key" [1]
as_the_root@PC2:/home/me$ sudo apt-key add - < Release.key
bash: Release.key: Permission denied
. The PC2 now responds
as_the_root@PC2:/home/me$ wine --version
ERROR: ld.so: object 'libesets_pac.so' from /etc/ld.so.preload cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
wine-3.0 (Ubuntu 3.0-1ubuntu1)
. Renaming
according to the 1st answer to Wine Installation Mistake and repeating whole the procedure has not helped to recognize the Release.key . The procedure according to the 3rd answer (Tutorial) to Can't install Wine Ubuntu 18.04 installed 1 GiB data, however the PC2 responds the same. What could be the mistake? Thanks!

  • 1
    Does this answer your question? can't install wine on ubuntu (actually lubuntu) 18.04 – N0rbert May 8 '20 at 20:23
  • @N0rbert: Thanks, the difference of answers between identical PCs, which I ask in the question, concerns the commands that you recommend in that answer. Therefore, I cannot answer yes/no to you. After those installations that aptitude has done (with my agreement), it is hard to get to know. Moreover, that wine in the PC2 has "recovered", as I am writing in the answer. – Tomáš Pečený May 9 '20 at 20:39

Maybe you should try a clean wine install.

Try with

$ sudo apt purge wine

then try with official WineHQ repository

First enable 32bits architecture

$ sudo dpkg --add-architecture i386

Here you Download and add the repository keys

$ wget -O - https://dl.winehq.org/wine-builds/winehq.key | sudo apt-key add -

Now add the repository

$ sudo add-apt-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main'

then update repos

$ sudo apt update

and the last step, install the WineHQ package

$ sudo apt install --install-recommends winehq-stable

Now you can test your version

$ wine --version

Here is the link to the official Webpage


An attempt to run an *.exe file with wine has requested installing Wine_Mono and Wine_Gecko and, for my purposes, wine now works. The answers

ERROR: ld.so: object 'libesets_pac.so' from /etc/ld.so.preload cannot be preloaded (wrong ELF class: ELFCLASS64): ignored 
were due to the ESET antivirus program; it's upgrading has repaired it. Now, wine-5.0 is present. Those my installation attempts took 2.3 GiB on disk. Installing from the beginning according to Giovanni Rodríguez answer would certainly be more economical. Many users would certainly appreciate that installation be available in Ubuntu Software.

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