Nautilus in Gnome3 Staging PPA does not create thumbnails (tiff)

[Harry]

Nautilus version 3.30.0-0ubuntu1~cosmic1 in Gnome3 Staging PPA will not start.
I am using Gnome-shell environment.
And I also installed the new tracker version 2.1.3-1~cosmic1 from Gnome3 Staging PPA.

This is the error message when trying to start Nautilus from terminal:

Tracker-ERROR **: 20:33:14.659: Unable to find default domain ontology rule /usr/share/tracker/domain-ontologies/default.rule

[Harry (harry33)]

After trying with the official cosmic tracker version 2.0.3-3, I found out that Nautilus will start.
However the bubblewrap won't work and I get no thumbnails (tiff, jpg).

[Tim Lunn (darkxst)]

Hi Harry,
    Thank you for your bug report.

   I am running nautilus 3.30 with tracker 2.1.3 on two system and they are both working, so we will need some more info. Thumbnails are working also

   That default.rule file does exist in the tracker 2.1.3-1~cosmic1 package, is it not installed on your filesystem?

does nautilus crash? if so can you get a backtrace. Unfortunately we no longer have retracers running against this ppa, so that need to be done manually using ubuntu-bug.

[Harry (harry33)]

I did get the default.rule error (starting from terminal) when I had installed both the nautilus_3.30.0-0ubuntu1~cosmic1 and the tracker_2.1.3-1~cosmic1 packeges.
As I mentioned, at that time nautilus did not start, the small wheel on the screen just kept on turning.

Then, after downgrading tracker_2.1.3-1~cosmic1 back to the official tracker_2.0.3-3, I did get nautilus_3.30.0-0ubuntu1~cosmic1 running.
However, the thumbnailer did not work then.

Sorry, I am not familiar with the backtrace system.

[Tim Lunn (darkxst)]

can you try reinstall tracker 2.1.3 and see if that file exists on your
filesystem? If it doesnt please run apport-collect <bugno> which should
colllect your dpkg/apt logs.

see this page for manually getting backtraces

https://wiki.ubuntu.com/DebuggingProgramCrash

On 12/09/18 18:06, Harry wrote:
> I did get the default.rule error (starting from terminal) when I had installed both the nautilus_3.30.0-0ubuntu1~cosmic1 and the tracker_2.1.3-1~cosmic1 packeges.
> As I mentioned, at that time nautilus did not start, the small wheel on the screen just kept on turning.
>
> Then, after downgrading tracker_2.1.3-1~cosmic1 back to the official tracker_2.0.3-3, I did get nautilus_3.30.0-0ubuntu1~cosmic1 running.
> However, the thumbnailer did not work then.
>
> Sorry, I am not familiar with the backtrace system.
>

[Harry (harry33)]

OK, I looked at the file default.rule file.
And I found out that it belongs to the package tracker.
However, that package is in universe now.
I did not have it installed.

Anyway, after installing the package tracker, nautilus did start.
But the thumbnailer still did not work.
It did show of course the thumbnails that were created by the official nautilus version,
but it did not create any new ones (tiff).

So I deleted this experimental nautilus and tracker and returned back to the official ones.

[Tim Lunn (darkxst)]

thumbnailers are working fine for me, both tiff and jpg, perhaps there is still a missing dependency, that is normally otherwise pulled in by vanilla-gnome-desktop. I generally only test gnome3-staging on systems with that meta package.

Can you file a separate bug for nautilus not starting without out the tracker package installed. That will probably need to be optional when nautilus 3.30 lands in Ubuntu proper next cycle.

[Harry (harry33)]

One more thing about the bubblewrap.
Now that gnome-desktop3 (libgnome-desktop-3-17_3.30.1-1ubuntu1) is build against bubblewrap and depends on it, thumbnailer is working correctly on my system.

The new gnome-desktop3 has been changed:
"debian/patches/disable-bubblewrap.patch, debian/control*: Drop changes to disable bubblewrap, now that it is approved to go into main."

I did test this with the official nautilus-3.26.4-0ubuntu4 and tracker_2.1.4-1 (in proposed).

[Khurshid Alam (khurshid-alam)]

Does the thumnailer still work on 32 bit with nautilus 3.30 from this ppa: https://launchpad.net/~ubuntu-desktop/+archive/ubuntu/nautilus330/

 If it does not then it's better to file a bug in debian.

[Sebastien Bacher (seb128)]

The ppa is maintained by Ubuntu GNOME and not an official Ubuntu archive