I have the following file (or equivalent) any time I have more than one
release enabled in sources.list:

cat /etc/apt/apt.conf.d/00defaultrelease
APT::Default-Release "jessie";

That way, only packages from jessie will be installed unless I use the -t
option to name a different release.

-fsr


On Sun, May 15, 2016 at 12:16 PM, Irrwahn <irrwahn@???> wrote:

> On Sun, 15 May 2016 15:39:03 +0200, Emninger wrote:
> > Am Sun, 15 May 2016 12:00:01 +0000
> > schrieb Irrwahn <irrwahn@???>:
> > [...]
> >
> >> As I already mentioned in an earlier message, I need the
> >> non-free catalyst fglrx driver, which for reasons beyond my
> >> knowledge is currently not available in neither testing nor
> >> unstable. So I pull that one from Jessie.
>
> <snip>
>
> > Just one practical question: I notice the fglrx problem as well. How
> > can i add it to my repositories? Reactivating Jessie?
> >
> > There would be the way to download it manually from the debian site and
> > install with gdebi or apt, wouldn't it?
>
> In principle, I see (at least) three viable ways.
>
> First option would be the one you mentioned: Manually download
> the Jessie packages (it's more than one!). I consider this the
> most messy and least convenient method.
>
> The second method would be to leave both Jessie and Ascii in
> sources.list. However, to make this foolproof one might have
> to additionally edit the apt preferences file, hence digging
> down the apt-pinning rabbit hole. This option has the charm
> that you could leave it that way and benefit pick the best of
> both releases. However, I'm afraid I'd probably mess up big
> time, if I tried to lead you trough this from just the top of
> my head, right now.
>
> The third method (which I would prefer) starts out like #2,
> but after you installed the fglrx drivers you would disable
> (comment out) the Jessie repositories again.
>
> I think the last one is the easiest and safest way to get the
> drivers. A perfectionist could argue, that additionally one
> should leave enabled the non-free branch of jessie-security
> to be on the safe side. But I guess now I started nit-picking
> at a subatomic level. :P
>
> TL;DR:
> Enable Jessie; install fglrx et al.; disable Jessie; cigar. :D
>
> > TIA & have a nice sunday :)
>
> You are very welcome, and the same to you. :)
>
> Regards
> Urban
>
>
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