Folders on `Desktop` cannot be opened when nautilus is launched from `Startup Applications`

[drstoop]

I experience already with 18.04, and now with the newly installed 18.10, that at some point all folders on the Desktop couldn't be opened anymore. One needs either open it from a regular nautilus window, or needs to kill & relaunch nautilus-desktop. I don't understand why but I finally found the trigger for the bug: It only occurs when nautilus is launched during boot by `Startup Applications` (so you have a open file manager window waiting already for you when you boot). If I remove the nautilus boot-launch from `Startup Applications` the folders can be opened again directly form the Desktop.

Please find the `/var/syslog` of Ub18.04 and Ub18.10 which I got right after trying to open a folder:
```sh
# Ubuntu 18.04 /var/syslog
Jan 16 17:59:51 drstoop-pc kernel: [ 657.870793] [UFW BLOCK] IN=wlp112s0 OUT= MAC=01:00:5e:00:00:01:c4:71:54:33:0a:b0:08:00 SRC=192.168.0.1 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2
Jan 16 18:00:33 drstoop-pc signal-desktop.desktop[4016]: {"name":"log","hostname":"drstoop-pc","pid":4016,"level":30,"msg":"Sending a keepalive message","time":"2019-01-16T16:00:33.885Z","v":0}
Jan 16 18:00:34 drstoop-pc nautilus-deskto[4026]: cannot open folder on desktop, freedesktop bus not ready

# Ubuntu 18.10 /var/syslog
Jan 31 18:26:40 drstoop-pc systemd[1]: Started Cleanup of Temporary Directories.
Jan 31 18:26:43 drstoop-pc usbmuxd[1076]: [18:26:43.402][1] config_get_device_record: failed to read '/var/lib/lockdown/719aba6e85c2a014e186e582e274284be21acc5c.plist': No such file or directory
Jan 31 18:26:48 drstoop-pc usbmuxd[1076]: [18:26:48.403][1] config_get_device_record: failed to read '/var/lib/lockdown/719aba6e85c2a014e186e582e274284be21acc5c.plist': No such file or directory
Jan 31 18:26:53 drstoop-pc usbmuxd[1076]: [18:26:53.407][1] config_get_device_record: failed to read '/var/lib/lockdown/719aba6e85c2a014e186e582e274284be21acc5c.plist': No such file or directory
Jan 31 18:26:58 drstoop-pc usbmuxd[1076]: [18:26:58.398][1] config_get_device_record: failed to read '/var/lib/lockdown/719aba6e85c2a014e186e582e274284be21acc5c.plist': No such file or directory
Jan 31 18:27:03 drstoop-pc usbmuxd[1076]: [18:27:03.403][1] config_get_device_record: failed to read '/var/lib/lockdown/719aba6e85c2a014e186e582e274284be21acc5c.plist': No such file or directory
```

Thx & cheers!
Max

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: nautilus 1:3.26.4-0ubuntu7.1
ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17
Uname: Linux 4.18.0-13-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Jan 31 18:36:24 2019
GsettingsChanges:
 b'org.gnome.nautilus.preferences' b'default-folder-viewer' b"'list-view'"
 b'org.gnome.nautilus.window-state' b'sidebar-width' b'254'
 b'org.gnome.nautilus.window-state' b'geometry' b"'969x364+119+1112'"
InstallationDate: Installed on 2019-01-26 (4 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_nautilus:

[Sebastien Bacher (seb128)]

Thank you for your bug report, could you add the journal log from a session where you have the issue?
Also note that nautilus 3.30 in disco removed handling of the desktop so technical that issue is deprecated

[Sebastien Bacher (seb128)]

the log has those warnings
'nautilus-deskto[3224]: cannot open folder on desktop, freedesktop bus not ready'

[drstoop (berr)]

Possibly integration problem of Btrfs & LVM

I just check on another laptop (ACER, other is 'Schenker'). It's the same reproducable bug, that you cannot open folders directly form desktop when you have nautilus added to 'Startup Applications'.

I may have a clue: These 18.10-installations are on Btrfs and the buggy 18.04 was on LVM file system. In the attached journal you will find the error in between and at the end when I tried to open a desktop folder:

`Φεβ 01 18:54:55 drstoop-opc nautilus[2041]: can't init metadata tree /home/drstoop/.local/share/gvfs-metadata/home: open: Permission denied`

gvgs-metadata of these file systems require root permissions. So this bug may be a integration lack of Btrfs and LVM.

[rickle (rick-hallocks)]

I am getting the same bug on an asus laptop, just an ext4 volume.
put "nautilus /home/username/recipes" and I no longer can double click links to folders on desktop.
uncheck that entry, and links start working

[Launchpad Janitor (janitor)]

[Expired for nautilus (Ubuntu) because there has been no activity for 60 days.]