Bug#905774: jackd2: jackd no longer starts, since device is already in use; but who's using it?

Jonas Smedegaard jonas at jones.dk
Thu Aug 9 18:34:52 BST 2018


Quoting Francesco Poli (2018-08-09 19:07:50)
> On Thu, 09 Aug 2018 17:38:54 +0200 Jonas Smedegaard wrote:
> 
> > Quoting Francesco Poli (2018-08-09 16:04:07)
> [...]
> > > I still have to understand why I had timidity-daemon installed on 
> > > that box: aptitude logs show that it had been there since long ago 
> > > (the oldest log shows an UPGRADE, rather than an INSTALL), but I 
> > > am sure I have never installed it manually. Indeed it was marked 
> > > as automatically installed, but no other installed package 
> > > currently depends on or recommends it.
> > > On another machine with an almost identical list of manually 
> > > installed packages, I do not have timidity or timidity-daemon 
> > > installed...
> > 
> > timidity used to recommend timidity-daemon (and some uses of APT 
> > wrongly flag auto-installed packages as manually-installed, or miss 
> > flagging them as auto-installed, or somesuch).  Seemingly relaxation 
> > from recommends to suggests happened at release 2.14.0-4.
> 
> Hello Jonas!
> Thanks for commenting on this bug log.
> 
> All this makes perfectly sense: timidity pulled timidity-daemon by 
> recommendation. Moreover recently, the recommendation has been turned 
> into a suggestion.

If I am not mistaken about english grammar...
<nitpicking>
either it "perfectly makes sense" or it "makes perfect sense"
</nitpicking>


> OK, this leaves me with the need to understand why package "timidity" 
> is installed on that machine, while it is not on the other similar 
> one. I am pretty sure I haven't installed timidity by hand...

I cannot tell how your system specifically ended in that state, but 
timidity historically got auto-installed frequently (to me) like this:

 $stuff → libsdl-mixer1.2 → freepats → timidity

My guess is that somehow (e.g. by using aptitude back when it had its 
own its own independent tracking of auto-installed packages which then 
got merged when APT grew support for that - I experienced some loss of 
flags during that period) your system lost the auto-install flag for 
timidity-daemon, keeping it around beyond removal of other packages and 
package relationships getting relaxed.


 - Jonas

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

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