No primeiro teste (12:15:25 até 12:16:29) é visível que desmontou a partição {set 20 12:16:23 dexter-K84C ntfs-3g[2600]: Unmounting /dev/sdb1 (PABLO 1TB)}, porḿ não ficou claro o que aconteceria se deixasse mais algum tempo.
Também surgiu uma dúvida: certeza que fez o eject para o dispositivo ao invés de fazer para a partição?
O log está mostrando que foi feito dessa forma (para a partição sdb1):
sudo eject /dev/sdb1
set 20 12:16:23 dexter-K84C sudo[2615]: dexter : TTY=pts/1 ; PWD=/home/dexter ; USER=root ; COMMAND=/usr/bin/eject /dev/sdb1
Quando deveria ter sido feito dessa forma (para o dispositivo sdb):
sudo eject /dev/sdb
Repete dessa forma e veja se produz algo diferente.
Usando o sudo eject /dev/sdbjournalctl -f
-- Logs begin at Wed 2017-09-20 12:12:06 -03. --
set 20 16:28:19 dexter-K84C unknown[9918]: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
set 20 16:28:19 dexter-K84C systemd[1]: Starting Hostname Service...
set 20 16:28:19 dexter-K84C hud-service[1857]: void DBusMenuImporter::slotGetLayoutFinished(QDBusPendingCallWatcher*): "Nenhuma interface “com.canonical.dbusmenu” no objeto no caminho /org/ayatana/bamf/window/37749994"
set 20 16:28:19 dexter-K84C dbus[703]: [system] Successfully activated service 'org.freedesktop.hostname1'
set 20 16:28:19 dexter-K84C systemd[1]: Started Hostname Service.
set 20 16:29:09 dexter-K84C repowerd[768]: UPowerPowerSourceAndLid: change_device(/org/freedesktop/UPower/devices/battery_BAT0), type=battery, is_present=1, state=charging, percentage=70.00, temperature=0.00
set 20 16:29:40 dexter-K84C dbus-daemon[1090]: Activating via systemd: service name='org.gnome.Terminal' unit='gnome-terminal-server.service'
set 20 16:29:41 dexter-K84C systemd[1058]: Starting GNOME Terminal Server...
set 20 16:29:41 dexter-K84C dbus-daemon[1090]: Successfully activated service 'org.gnome.Terminal'
set 20 16:29:41 dexter-K84C systemd[1058]: Started GNOME Terminal Server.
set 20 16:30:04 dexter-K84C sudo[9979]: dexter : TTY=pts/1 ; PWD=/home/dexter ; USER=root ; COMMAND=/usr/bin/eject /dev/sdb
set 20 16:30:04 dexter-K84C sudo[9979]: pam_unix(sudo:session): session opened for user root by (uid=0)
set 20 16:30:04 dexter-K84C udisksd[1669]: Cleaning up mount point /media/dexter/PABLO 1TB (device 8:17 is not mounted)
set 20 16:30:04 dexter-K84C ntfs-3g[9913]: Unmounting /dev/sdb1 (PABLO 1TB)
set 20 16:30:04 dexter-K84C sudo[9979]: pam_unix(sudo:session): session closed for user root
set 20 16:31:09 dexter-K84C repowerd[768]: UPowerPowerSourceAndLid: change_device(/org/freedesktop/UPower/devices/battery_BAT0), type=battery, is_present=1, state=charging, percentage=70.00, temperature=0.00
E ao clicar em remover com segurança, aparece o seguinte: (Vou copiar somente a partir do comando que fiz, que não tem na parte de cima).set 20 16:33:09 dexter-K84C repowerd[768]: UPowerPowerSourceAndLid: change_device(/org/freedesktop/UPower/devices/battery_BAT0), type=battery, is_present=1, state=charging, percentage=70.00, temperature=0.00
set 20 16:33:11 dexter-K84C udisksd[1669]: Successfully sent SCSI command SYNCHRONIZE CACHE to /dev/sdb
set 20 16:33:11 dexter-K84C udisksd[1669]: Successfully sent SCSI command START STOP UNIT to /dev/sdb
set 20 16:33:11 dexter-K84C kernel: sd 6:0:0:0: [sdb] Synchronizing SCSI cache
set 20 16:33:11 dexter-K84C udisksd[1669]: Powered off /dev/sdb - successfully wrote to sysfs path /sys/devices/pci0000:00/0000:00:1c.3/0000:03:00.0/usb4/4-1/remove
set 20 16:33:11 dexter-K84C kernel: usb 4-1: USB disconnect, device number 4
set 20 16:33:11 dexter-K84C kernel: xhci_hcd 0000:03:00.0: Stop endpoint command completion for disabled slot 1
set 20 16:33:11 dexter-K84C kernel: usb 4-1: new SuperSpeed USB device number 5 using xhci_hcd
set 20 16:33:11 dexter-K84C kernel: usb 4-1: New USB device found, idVendor=0480, idProduct=a00e
set 20 16:33:11 dexter-K84C kernel: usb 4-1: New USB device strings: Mfr=2, Product=3, SerialNumber=1
set 20 16:33:11 dexter-K84C kernel: usb 4-1: Product: External USB 3.0
set 20 16:33:11 dexter-K84C kernel: usb 4-1: Manufacturer: TOSHIBA
set 20 16:33:11 dexter-K84C kernel: usb 4-1: SerialNumber: 20140310006759F
set 20 16:33:11 dexter-K84C kernel: usb-storage 4-1:1.0: USB Mass Storage device detected
set 20 16:33:11 dexter-K84C kernel: scsi host6: usb-storage 4-1:1.0
set 20 16:33:11 dexter-K84C mtp-probe[10045]: checking bus 4, device 5: "/sys/devices/pci0000:00/0000:00:1c.3/0000:03:00.0/usb4/4-1"
set 20 16:33:11 dexter-K84C mtp-probe[10045]: bus: 4, device: 5 was not an MTP device
set 20 16:33:13 dexter-K84C kernel: scsi 6:0:0:0: Direct-Access TOSHIBA External USB 3.0 0 PQ: 0 ANSI: 6
set 20 16:33:13 dexter-K84C kernel: sd 6:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 também/932 GiB)
set 20 16:33:13 dexter-K84C kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0
set 20 16:33:13 dexter-K84C kernel: sd 6:0:0:0: [sdb] Write Protect is off
set 20 16:33:13 dexter-K84C kernel: sd 6:0:0:0: [sdb] Mode Sense: 43 00 00 00
set 20 16:33:13 dexter-K84C kernel: sd 6:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
set 20 16:33:15 dexter-K84C kernel: sdb: sdb1
set 20 16:33:15 dexter-K84C kernel: sd 6:0:0:0: [sdb] Attached SCSI disk
set 20 16:33:16 dexter-K84C ntfs-3g[10081]: Version 2016.2.22AR.1 integrated FUSE 28
set 20 16:33:16 dexter-K84C ntfs-3g[10081]: Mounted /dev/sdb1 (Read-Write, label "PABLO 1TB", NTFS 3.1)
set 20 16:33:16 dexter-K84C ntfs-3g[10081]: Cmdline options: rw,nodev,nosuid,uid=1000,gid=1000,uhelper=udisks2
set 20 16:33:16 dexter-K84C ntfs-3g[10081]: Mount options: rw,nodev,nosuid,uhelper=udisks2,allow_other,nonempty,relatime,default_permissions,fsname=/dev/sdb1,blkdev,blksize=4096
set 20 16:33:16 dexter-K84C ntfs-3g[10081]: Global ownership and permissions enforced, configuration type 7
set 20 16:33:16 dexter-K84C udisksd[1669]: Mounted /dev/sdb1 at /media/dexter/PABLO 1TB on behalf of uid 1000
set 20 16:33:17 dexter-K84C nautilus[10085]: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
set 20 16:33:17 dexter-K84C nautilus[10085]: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
set 20 16:33:17 dexter-K84C dbus[703]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
set 20 16:33:17 dexter-K84C systemd[1]: Starting Hostname Service...
set 20 16:33:17 dexter-K84C hud-service[1857]: void DBusMenuImporter::slotGetLayoutFinished(QDBusPendingCallWatcher*): "Nenhuma interface “com.canonical.dbusmenu” no objeto no caminho /org/ayatana/bamf/window/37751018"
set 20 16:33:17 dexter-K84C dbus[703]: [system] Successfully activated service 'org.freedesktop.hostname1'
set 20 16:33:17 dexter-K84C systemd[1]: Started Hostname Service.
set 20 16:35:09 dexter-K84C repowerd[768]: UPowerPowerSourceAndLid: change_device(/org/freedesktop/UPower/devices/battery_BAT0), type=battery, is_present=1, state=charging, percentage=70.00, temperature=0.00
Como pode ser resolvido isso? Se quiser e puder, poderíamos tentar por acesso remoto e depois colocaremos os resultados aqui no fórum.
Agradeço desde já.