I can confirm that when it happened to me, I had gdm as login manager and not lightdm.
Since the upgrade to 14.04, it happened just one time in one laptop (solved by login/logout) with Ubuntu Gnome, and never in my other laptop which has Xubuntu. So for me it is happening now very rarely; last time I seen it was more than a month ago --- I can't remember. My guess is that the DBUS connection between udidskd and the desktop get lost, or stuck. Probably related to the DM, yes. Would not be surprising if lightdm and gdm share some bug. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gvfs in Ubuntu. https://bugs.launchpad.net/bugs/1241811 Title: USB disk not automatically mounted after upgrade to 13.10 Status in GVFS: New Status in Light Display Manager: New Status in Ubuntu GNOME: New Status in “gvfs” package in Ubuntu: Confirmed Status in “nautilus-udisks” package in Ubuntu: Invalid Bug description: Since the upgrade to 13.10, my laptop stopped mounting the USB devices (and SD cards too) automatically. Inserting the USB I have in the log: SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.570340] usb 3-2: new high-speed USB device number 3 using xhci_hcd SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.593170] usb 3-2: New USB device found, idVendor=090c, idProduct=1000 SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.593181] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.593187] usb 3-2: Product: Flash Disk SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.593192] usb 3-2: Manufacturer: USB SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.593196] usb 3-2: SerialNumber: FBF1009232400790 SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.593492] usb 3-2: ep 0x81 - rounding interval to 128 microframes, ep desc says 255 microframes SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.593501] usb 3-2: ep 0x2 - rounding interval to 128 microframes, ep desc says 255 microframes SYS: Oct 18 13:57:38 samsung-romano kernel: [ 167.595232] scsi7 : usb-storage 3-2:1.0 SYS: Oct 18 13:57:38 samsung-romano mtp-probe: checking bus 3, device 3: "/sys/devices/pci0000:00/0000:00:1c.4/0000:04:00.0/usb3/3-2" SYS: Oct 18 13:57:38 samsung-romano mtp-probe: bus: 3, device: 3 was not an MTP device SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.834382] scsi 7:0:0:0: Direct-Access USB Flash Disk 1100 PQ: 0 ANSI: 0 CCS SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.835894] sd 7:0:0:0: Attached scsi generic sg3 type 0 SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.836227] sd 7:0:0:0: [sdc] 3915776 512-byte logical blocks: (2.00 GB/1.86 GiB) SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.836910] sd 7:0:0:0: [sdc] Write Protect is off SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.836926] sd 7:0:0:0: [sdc] Mode Sense: 43 00 00 00 SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.837665] sd 7:0:0:0: [sdc] No Caching mode page present SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.837676] sd 7:0:0:0: [sdc] Assuming drive cache: write through SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.843552] sd 7:0:0:0: [sdc] No Caching mode page present SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.843562] sd 7:0:0:0: [sdc] Assuming drive cache: write through SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.844609] sdc: sdc1 SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.846982] sd 7:0:0:0: [sdc] No Caching mode page present SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.846990] sd 7:0:0:0: [sdc] Assuming drive cache: write through SYS: Oct 18 13:57:39 samsung-romano kernel: [ 168.846997] sd 7:0:0:0: [sdc] Attached SCSI removable disk But after that nothing happens. I checked the dconf variables as per https://help.ubuntu.com/community/Mount/USB but it's all correctly set. I can mount the disk by hand: % sudo mount /dev/sdc1 /mnt % mount | grep mnt /dev/sdc1 on /mnt type vfat (rw) ...and it works ok. Add: using from command line udisks works, too: (0)samsung-romano:~% udisks --mount /dev/sdc1 Mounted /org/freedesktop/UDisks/devices/sdc1 at /media/PENDRIVE To manage notifications about this bug go to: https://bugs.launchpad.net/gvfs/+bug/1241811/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp