我有一个特定的 USB 棒，我经常用它来传输文件。插入后，它最终会挂载在/media/user/Transfer。我说“最终”是因为，一开始，我的 shell 告诉我它/media/user是空的（mount也无法显示设备）。只有当我在 Nautilus 中打开驱动器时，它才会显示在 shell 中（和 下mount）。
这是一致的行为，因此这似乎不仅仅是一个时间问题。可能是什么原因造成的？
这是在 Ubuntu 20.04 上。
的输出dpkg -l | grep mount是
ii libmount-dev:amd64 2.34-0.1ubuntu9.3 amd64 device mounting library - headers and static libraries
ii libmount1:amd64 2.34-0.1ubuntu9.3 amd64 device mounting library
ii libmount1:i386 2.34-0.1ubuntu9.3 i386 device mounting library
ii mount 2.34-0.1ubuntu9.3 amd64 tools for mounting and manipulating filesystems
/etc/fstab包含
/dev/mapper/vgubuntu-root / ext4 errors=remount-ro 0 1
UUID=54DF-0F1C /boot/efi vfat umask=0077 0 1
/dev/mapper/vgubuntu-swap_1 none swap sw 0 1
的输出gsettings get org.gnome.desktop.media-handling automount是
true
插入 USB 驱动器时，输出udisksctl monitor为
14:19:28.156: Added /org/freedesktop/UDisks2/drives/Verbatim_STORE_N_GO_071816855864FE27
org.freedesktop.UDisks2.Drive:
CanPowerOff: true
Configuration: {}
ConnectionBus: usb
Ejectable: true
Id: Verbatim-STORE-N-GO-071816855864FE27
Media:
MediaAvailable: true
MediaChangeDetected: true
MediaCompatibility:
MediaRemovable: true
Model: STORE N GO
Optical: false
OpticalBlank: false
OpticalNumAudioTracks: 0
OpticalNumDataTracks: 0
OpticalNumSessions: 0
OpticalNumTracks: 0
Removable: true
Revision: PMAP
RotationRate: -1
Seat: seat0
Serial: 071816855864FE27
SiblingId: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0
Size: 31042043904
SortKey: 01hotplug/1655835568155716
TimeDetected: 1655835568155716
TimeMediaDetected: 1655835568155716
Vendor: Verbatim
WWN:
14:19:28.156: Added /org/freedesktop/UDisks2/block_devices/sdb
org.freedesktop.UDisks2.Block:
Configuration: []
CryptoBackingDevice: '/'
Device: /dev/sdb
DeviceNumber: 2064
Drive: '/org/freedesktop/UDisks2/drives/Verbatim_STORE_N_GO_071816855864FE27'
HintAuto: true
HintIconName:
HintIgnore: false
HintName:
HintPartitionable: true
HintSymbolicIconName:
HintSystem: false
Id:
IdLabel:
IdType:
IdUUID:
IdUsage:
IdVersion:
MDRaid: '/'
MDRaidMember: '/'
PreferredDevice: /dev/sdb
ReadOnly: false
Size: 31042043904
Symlinks: /dev/disk/by-id/usb-Verbatim_STORE_N_GO_071816855864FE27-0:0
/dev/disk/by-path/pci-0000:00:14.0-usb-0:1:1.0-scsi-0:0:0:0
UserspaceMountOptions:
org.freedesktop.UDisks2.PartitionTable:
Partitions: []
Type: gpt
14:19:28.332: Added /org/freedesktop/UDisks2/block_devices/sdb1
org.freedesktop.UDisks2.Block:
Configuration: []
CryptoBackingDevice: '/'
Device: /dev/sdb1
DeviceNumber: 2065
Drive: '/org/freedesktop/UDisks2/drives/Verbatim_STORE_N_GO_071816855864FE27'
HintAuto: true
HintIconName:
HintIgnore: false
HintName:
HintPartitionable: true
HintSymbolicIconName:
HintSystem: false
Id: by-uuid-6294ed84-5993-4b8e-a286-03716e760716
IdLabel: Transfer
IdType: ext4
IdUUID: 6294ed84-5993-4b8e-a286-03716e760716
IdUsage: filesystem
IdVersion: 1.0
MDRaid: '/'
MDRaidMember: '/'
PreferredDevice: /dev/sdb1
ReadOnly: false
Size: 31039946752
Symlinks: /dev/disk/by-id/usb-Verbatim_STORE_N_GO_071816855864FE27-0:0-part1
/dev/disk/by-label/Transfer
/dev/disk/by-partuuid/bd0549e1-a5e5-47e5-8390-be12eac7ea88
/dev/disk/by-path/pci-0000:00:14.0-usb-0:1:1.0-scsi-0:0:0:0-part1
/dev/disk/by-uuid/6294ed84-5993-4b8e-a286-03716e760716
UserspaceMountOptions:
org.freedesktop.UDisks2.Filesystem:
MountPoints:
Size: 31039946752
org.freedesktop.UDisks2.Partition:
Flags: 0
IsContained: false
IsContainer: false
Name:
Number: 1
Offset: 1048576
Size: 31039946752
Table: '/org/freedesktop/UDisks2/block_devices/sdb'
Type: 0fc63daf-8483-4772-8e79-3d69d8477de4
UUID: bd0549e1-a5e5-47e5-8390-be12eac7ea88
14:19:28.333: /org/freedesktop/UDisks2/block_devices/sdb: org.freedesktop.UDisks2.PartitionTable: Properties Changed
Partitions: ['/org/freedesktop/UDisks2/block_devices/sdb1']
输出journalctl -f为
Jun 21 14:19:25 napalmshoes kernel: usb 1-1: new high-speed USB device number 91 using xhci_hcd
Jun 21 14:19:25 napalmshoes kernel: usb 1-1: New USB device found, idVendor=18a5, idProduct=0302, bcdDevice= 1.00
Jun 21 14:19:25 napalmshoes kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jun 21 14:19:25 napalmshoes kernel: usb 1-1: Product: STORE N GO
Jun 21 14:19:25 napalmshoes kernel: usb 1-1: Manufacturer: Verbatim
Jun 21 14:19:25 napalmshoes kernel: usb 1-1: SerialNumber: 071816855864FE27
Jun 21 14:19:25 napalmshoes kernel: usb-storage 1-1:1.0: USB Mass Storage device detected
Jun 21 14:19:25 napalmshoes kernel: scsi host4: usb-storage 1-1:1.0
Jun 21 14:19:25 napalmshoes mtp-probe[3425657]: checking bus 1, device 91: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-1"
Jun 21 14:19:25 napalmshoes mtp-probe[3425657]: bus: 1, device: 91 was not an MTP device
Jun 21 14:19:25 napalmshoes mtp-probe[3425664]: checking bus 1, device 91: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-1"
Jun 21 14:19:25 napalmshoes mtp-probe[3425664]: bus: 1, device: 91 was not an MTP device
Jun 21 14:19:27 napalmshoes kernel: scsi 4:0:0:0: Direct-Access Verbatim STORE N GO PMAP PQ: 0 ANSI: 4
Jun 21 14:19:27 napalmshoes kernel: sd 4:0:0:0: Attached scsi generic sg2 type 0
Jun 21 14:19:27 napalmshoes kernel: sd 4:0:0:0: [sdb] 60628992 512-byte logical blocks: (31.0 GB/28.9 GiB)
Jun 21 14:19:27 napalmshoes kernel: sd 4:0:0:0: [sdb] Write Protect is off
Jun 21 14:19:27 napalmshoes kernel: sd 4:0:0:0: [sdb] Mode Sense: 23 00 00 00
Jun 21 14:19:27 napalmshoes kernel: sd 4:0:0:0: [sdb] No Caching mode page found
Jun 21 14:19:27 napalmshoes kernel: sd 4:0:0:0: [sdb] Assuming drive cache: write through
Jun 21 14:19:27 napalmshoes kernel: sdb: sdb1
Jun 21 14:19:27 napalmshoes kernel: sd 4:0:0:0: [sdb] Attached SCSI removable disk