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I installed Trusty Tahr on my old Dell Studio 1537 a few hours ago. Since then I've been trying to install pipelight and failed miserably. I get the unmet dependencies problem as many people have before me. I've tried several suggestions that I've found both here and in other forums.

# Clean + -f install #
sudo apt-get clean
sudo apt-get -f install
sudo dpkg --configure -a
sudo apt-get -f install
# Output: 0 upgraded, 0 newly installed, 0 to remove, and 0 not upgraded.

I've also tried removing the repository and adding it again with no luck. I tried purging the repository then adding it again as suggested by this post and now terminal won't even find the package, much less try to install. I also tried installing aptitude as I've read that it may be able to install packages somewhat forcibly (also failed, because I also get unmet dependencies when trying to install aptitude). Lastly I also get unmet dependencies when trying to install gimp, which leads me to believe it might be a system problem instead of a package/dependency problem, so I went so far as to re-install the system from scratch with no luck. So far the only things I managed to install in the system are the firmware-b43-installer for the wireless (Broadcom BCM4312) card and ubuntu-restricted-extras.

So now, I'm looking for solutions that I haven't tried yet or something I might have missed. Any suggestions?

Renata Dis
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  • In order to increase the chances of a helpful answer, please provide the 2 most important missing parts in the question: 1) What exact command was typed at first, and 2) What error message was seen (e.g. _what_ unmet dependencies did you get?) expressions like "failed miserably" and "no luck" are not helpful and not a substitute for the actual facts. Similarly for "add the repository" (which one?) etc. – arielf Jan 03 '16 at 02:33
  • After OS installation I installed the broadcom driver (sudo apt-get install firmware-b43-installer) and restricted extras (sudo apt-get install ubuntu-restricted-extras). Then I tried installing pipelight, with "sudo add-apt-repository ppa:pipelight/stable", and "sudo apt-get install pipelight-multi". I also tried using the command available at the pipelight main page "sudo apt-get install --install-recommends pipelight-multi". All attempts resulted in the error in first the link 'pipelight'. – Renata Dis Jan 03 '16 at 12:25

1 Answers1

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Okay, I don't know if this qualifies as an answer, but I re-installed the system one more time and third time was the charm. Pipelight installed this time. I still don't know why it didn't install before, but the problem got solved anyway, so thanks to everyone who at least took a look at this question. And thanks to arielf for trying to help me make clearer questions, I'll try to improve on that next time :)

Renata Dis
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  • Glad you solved it yourself. That's the best way to learn. I suspect what happened here may have been the order of commands. For a totally new repo, (like `ppa:pipelight/stable` above), the repository needs to be added first, then an `apt-get update` is needed to update the index of packages, latest versions available, etc. Finally `apt-get install ` needs to be issued for the actual install. Adding new repositories is a relatively rare operation (and needs to be done only once per repo). – arielf Jan 04 '16 at 19:07