Bug#812574: grub-pc: wants to overwrite admin configuration on each upgrade

[Niels Thykier]

Control: tags -1 moreinfo unreproducible

On Sun, 19 Feb 2017 18:29:46 +0000 Colin Watson <cjwatson at debian.org> wrote:
> On Mon, Jan 02, 2017 at 12:37:32PM +0100, Thorsten Glaser wrote:
> > On Sat, 31 Dec 2016, Colin Watson wrote:
> > > The current postinst is certainly trying to use ucf in such a way, so
> > > let's try to debug this.  Please could you:
> > 
> > Oh ok. Let me check that this system is affected first…
> 
> Thanks, and sorry for once again taking a while to get round to this.
> 
> > >  * attach /var/lib/ucf/cache/:etc:default:grub
> > >  * attach /etc/default/grub
> > 
> > Attached.
> > 
> > >  * show the output of "grep /etc/default/grub /var/lib/ucf/hashfile"
> > 
> > tglase at tglase:~ $ grep /etc/default/grub /var/lib/ucf/hashfile
> > fe09266a730fcba271f832ebb82a6a91  /etc/default/grub
> > 
> > > With any luck that will be enough to make some progress here.
> > 
> > OK, thanks!
> 
> Unfortunately, when I put these in place in a VM, I couldn't reproduce
> your bug; and the information here looks right, in that the hash in
> /var/lib/ucf/hashfile matches the hash of
> /var/lib/ucf/cache/:etc:default:grub.  There must be something a bit
> more subtle happening, or else I'm being stupid.
> 
> I guess we need to break out bigger guns.  Could you do the same
> package-reinstall procedure as before, only this time:
> 
>  * temporarily edit /usr/bin/ucf, changing its initialisation from:
> 
>      DEBUG=0
>      VERBOSE=''
> 
>    to:
> 
>      DEBUG=1
>      VERBOSE=1
> 
>  * export DEBCONF_DEBUG=developer in the environment
> 
> That should let me see both what ucf is doing and (enough of) what the
> GRUB postinst is doing.
> 
> Thanks,
> 
> -- 
> Colin Watson                                       [cjwatson at debian.org]
> 
> 

Hi,

AFAICT, we are waiting for more information on this bug - tagging
accordingly.

Thanks,
~Niels