Thanks Ralph, but FG has taken a back seat for the moment - see my next email.
But I did install FG from Ubuntu onto my new copy of Ubuntu 18.10 and it
worked!! It was a prior version of FG so there could still be an issue with
the latest from the FG site.
John
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Today's Topics:
1. Re: flightgear on Ubuntu (Ralph Corderoy)
----------------------------------------------------------------------
Message: 1
Date: Sun, 28 Apr 2019 14:11:05 +0100
From: Ralph Corderoy <ra...@inputplus.co.uk>
To: John Dubery <john.dub...@hotmail.co.uk>
Cc: Dorset Linux User Group <dorset@mailman.lug.org.uk>
Subject: Re: [Dorset] flightgear on Ubuntu
Message-ID: <20190428131105.c8c6221...@orac.inputplus.co.uk>
Content-Type: text/plain; charset=utf-8
Hi John,
Copying in the list...
> I've gone through the flightgear.org advice on graphics drivers with
> nothing turning up. For example I can run glxgears very smoothly at
> 60fps. I've also installed UrbanTerror and that worked without
> complaint.
>
> So, I've tried using Ubuntu 18.10 from a memory stick. My problem
> there is that I can't get it to find flightgear. If I try to install
> flightgear under 18.10, by first adding the recommended ppa:
> sudo add-apt-repository ppa:saiarcot895/flightgear
> then it says it requires many libraries, understandably:
> ubuntu@ubuntu:~$ sudo apt-get install flightgear
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
> The following information may help to resolve the situation:
>
> The following packages have unmet dependencies:
> flightgear : Depends: freeglut3 but it is not installable
> Depends: libflite1 (>= 1.4-release-9~) but it is not installable
...
> E: Unable to correct problems, you have held broken packages.
>
> ubuntu@ubuntu:~$ sudo apt-get install libflite1
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> Package libflite1 is not available, but is referred to by another package.
> This may mean that the package is missing, has been obsoleted, or
> is only available from another source
>
> E: Package 'libflite1' has no installation candidate
I *think* the way to get insight into that problem is
apt-cache policy libflite1
but it's hard to be sure without having something similar to try and
debug. Example output is
$ apt-cache policy ntpdate
ntpdate:
Installed: 1:4.2.8p10+dfsg-5ubuntu3.3
Candidate: 1:4.2.8p10+dfsg-5ubuntu3.3
Version table:
*** 1:4.2.8p10+dfsg-5ubuntu3.3 500
500 http://gb.archive.ubuntu.com/ubuntu artful-updates/universe
amd64 Packages
500 http://gb.archive.ubuntu.com/ubuntu artful-security/universe
amd64 Packages
100 /var/lib/dpkg/status
1:4.2.8p10+dfsg-5ubuntu3 500
500 http://gb.archive.ubuntu.com/ubuntu artful/universe amd64
Packages
$
But I suspect the underlying problem here is ppa:saiarcot895/flightgear
is referring to packages that aren't known to your system given the
repositories that are present. On a live ISO, that seems to be `main'
and `restricted'. Poking about /etc/apt/sources.list and
/etc/apt/sources.d would confirm.
A lot of packages are in the `universe' repository, e.g. freeglut3,
listed above, is found by
https://packages.ubuntu.com/cgi-bin/search_packages.pl?keywords=freeglut3&searchon=names&subword=1&version=all&release=all
and shows `[universe]' in bold against each result.
To add that repository, try `sudo add-apt-repository universe'.
Or https://help.ubuntu.com/community/Repositories/Ubuntu describes where
to click, and click quite a few more times.
BTW, Ubuntu 19.04, now out has
flightgear packaged at 2018.3.2+dfsg-2 in universe.
https://packages.ubuntu.com/search?suite=all§ion=all&arch=any&keywords=flightgear&searchon=names
--
Cheers, Ralph.
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