Bug 1732434

I just like to add, that I can see that this is working on Fedora 30 with nautilus and gnome-software on version 3.32,
but the metadata are same:

$ cat /usr/share/metainfo/org.gnome.Nautilus.appdata.xml | grep image 
      <image>https://static.gnome.org/appdata/nautilus/nautilus-201901141.png</image>
      <image>https://static.gnome.org/appdata/nautilus/nautilus-201901142.png</image>
      <image>https://static.gnome.org/appdata/nautilus/nautilus-201901143.png</image>
      <image>https://static.gnome.org/appdata/nautilus/nautilus-201901144.png</image>

I am adding coverage for more apps

There's screenshot caching involved. appstream-data package contains the actual screenshot URLs that gnome-software uses, and if the URLs don't work, it's an issue with appstream-data and/or screenshot mirroring.

Yes, that's right I was hope that those url won't be valid but unfortunatelly they are:

from appstream-data-8-20190805.el8.noarch
<screenshots>
<screenshot type="default">
<image type="source">https://static.gnome.org/appdata/nautilus/nautilus-201901141.png</image>
<image type="thumbnail" height="351" width="624">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/624x351/org.gnome.Nautilus-e51dd12eb7c05546c507740ab82b2e9c.png</image>
<image type="thumbnail" height="63" width="112">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/112x63/org.gnome.Nautilus-e51dd12eb7c05546c507740ab82b2e9c.png</image>
<image type="thumbnail" height="126" width="224">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/224x126/org.gnome.Nautilus-e51dd12eb7c05546c507740ab82b2e9c.png</image>
<image type="thumbnail" height="423" width="752">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/752x423/org.gnome.Nautilus-e51dd12eb7c05546c507740ab82b2e9c.png</image>
</screenshot>
<screenshot>
<image type="source">https://static.gnome.org/appdata/nautilus/nautilus-201901142.png</image>
<image type="thumbnail" height="351" width="624">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/624x351/org.gnome.Nautilus-900c21b61dd2ab9eacac1e4ac2a21568.png</image>
<image type="thumbnail" height="63" width="112">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/112x63/org.gnome.Nautilus-900c21b61dd2ab9eacac1e4ac2a21568.png</image>
<image type="thumbnail" height="126" width="224">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/224x126/org.gnome.Nautilus-900c21b61dd2ab9eacac1e4ac2a21568.png</image>
<image type="thumbnail" height="423" width="752">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/752x423/org.gnome.Nautilus-900c21b61dd2ab9eacac1e4ac2a21568.png</image>
</screenshot>
<screenshot>
<image type="source">https://static.gnome.org/appdata/nautilus/nautilus-201901144.png</image>
<image type="thumbnail" height="351" width="624">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/624x351/org.gnome.Nautilus-de07fccfa9b38dec9ab7c1fc4203951a.png</image>
<image type="thumbnail" height="63" width="112">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/112x63/org.gnome.Nautilus-de07fccfa9b38dec9ab7c1fc4203951a.png</image>
<image type="thumbnail" height="126" width="224">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/224x126/org.gnome.Nautilus-de07fccfa9b38dec9ab7c1fc4203951a.png</image>
<image type="thumbnail" height="423" width="752">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/752x423/org.gnome.Nautilus-de07fccfa9b38dec9ab7c1fc4203951a.png</image>
</screenshot>
<screenshot>
<image type="source">https://static.gnome.org/appdata/nautilus/nautilus-201901143.png</image>
<image type="thumbnail" height="351" width="624">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/624x351/org.gnome.Nautilus-44305dbff4d1b1ba01e72240ebc81fd1.png</image>
<image type="thumbnail" height="63" width="112">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/112x63/org.gnome.Nautilus-44305dbff4d1b1ba01e72240ebc81fd1.png</image>
<image type="thumbnail" height="126" width="224">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/224x126/org.gnome.Nautilus-44305dbff4d1b1ba01e72240ebc81fd1.png</image>
<image type="thumbnail" height="423" width="752">https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/752x423/org.gnome.Nautilus-44305dbff4d1b1ba01e72240ebc81fd1.png</image>
</screenshot>
</screenshots>

Links are working for me, but they wont show in nautilus, I ran the test on couple fresh machines today and they don't show 
there as well just for nautilus (There are packages which actually really missing screenshot entries in the xml).
I don't know about caching though, might be the point

With "caching" I meant that the upstream URLs are redirected to access.redhat.com/webassets and the images are served from that page instead. From your copy-paste above, https://access.redhat.com/webassets/avalon/g/gnome-software/screenshots/752x423/org.gnome.Nautilus-e51dd12eb7c05546c507740ab82b2e9c.png for example gives error 404 (not found).

Ah right, I haven't tried those, make sense now, thanks

Ok, so I found 3 additional apps that are shipped within appstream repo that miss screen shots:

seahorse
lshw-gui
fontforge
nautilus (4th)

would be nice to update them next time we will be updating appstream-data

Also no screenshots for gnome-control-center

Hello Richard, please if you are planning any further appstream data update in 8.2, would it be possible to also include this ?

nautilus has screenshot,

Missing list update:
lshw-gui
seahorse
gnome-control-center

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.