3
votes
1answer
428 views

/var/cache/apt-show-versions/files: No such file or directory

When I run sudo apt-get update this is the result: can't create /var/cache/apt-show-versions/files: No such file or directory at /usr/bin/apt-show-versions line 196. E: Problem executing scripts ...
0
votes
1answer
1k views

How to reinstall apps?

I am having trouble re-installing Create Launcher. I downloaded it two days ago but my Ubuntu was acting weird. Because I am new to Linux/Ubuntu, I un-installed it and re-installed it. I am trying to ...
0
votes
1answer
582 views

W: GPG error and WARNING: The following packages cannot be authenticated!

I am getting following output of sudo apt-get update and sudo apt-get upgrade command. user@user-VPCCB45FN:~$ sudo apt-get update ...... ...... Ign http://in.archive.ubuntu.com trusty-backports/main ...
0
votes
2answers
446 views

I am installing jenkins server but its giving W: GPG error:

Hello all i am installing Jenkins server but i am facing below issue. W: GPG error: http://pkg.jenkins-ci.org binary/ Release: The following signatures couldn't be verified because the public key is ...
1
vote
1answer
538 views

Too many no_pubkey errors . How to fix?

After some updates few months ago i have these outputs: W: Erro GPG: http://sft.if.usp.br trusty Release: As assinaturas a seguir não puderam ser verificadas devido à chave pública não estar ...
1
vote
1answer
401 views

Cannot remove codeblocks using apt-get - Ubuntu 14.04

Whenever I try to run sudo apt-get remove codeblocks I am met with this message: The following packages have unmet dependencies: codeblocks-contrib : Depends: libgamin0 but it is not going to be ...
0
votes
0answers
377 views

How to solve the problems in “sudo apt-get update” [duplicate]

Here is my /etc/apt/source.list file. I get many problems in the output of sudo apt-get update: $ sudo apt-get update [sudo] password for tim: Err http://cran.cnr.Berkeley.edu precise/ Release.gpg ...
0
votes
3answers
164 views

what causes this error by `apt-get update`

What causes this error when sudo apt-get update is issued? W: GPG error: http://download.virtualbox.org trusty InRelease: The following signatures couldn't be verified because the public key is not ...
1
vote
1answer
257 views

Updage Manager considers generic packages as untrusted packages

Update Manager refuses to install updates because it would require installing untrusted packages. However, if I look at the list of so-called untrusted packages, those seem like they should be ...
0
votes
1answer
186 views

How can I get rid of this NO_PUBKEY errors?

sudo apt-get update is giving me this error at the end. I'm using "Y PPA Manager" and it seems that now all PPA's are O.K., but the problem (I think) is with the official Ubuntu repos: W: GPG error: ...
2
votes
2answers
68 views

Software & Updates (software-properties-gtk): 'EOFError: marshal data too short'

I cannot open Software & Updates tool on 14.04 and get the following error: Here is the full output of apt-get update, it shows this warning: W: GPG error: http://dl.bintray.com Release: The ...
0
votes
1answer
176 views

W: GPG error: message in my terminal

I get this msg in my terminal W: GPG error: https://download.01.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A902DDA375E52366 ...
1
vote
0answers
224 views

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY

When I look for my error key number 0429ACCAF7AA50B3, it is not in the database, thus I cannot receive or generate anything even none of this did not work: ...
1
vote
2answers
193 views

can't update recommended Updates

I can't update the system. The recommended Updates pops up with some updates but when I hit install it says"Requires installation of untrusted packages"(screen shot below ) and when I hit O.K it ...
1
vote
1answer
119 views

14.04 - GPG error, public key not available

apt-get update returns: W: GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D46F45428842CE5E i've ...

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