Сам размонтируется usb-диск

Суть проблемы. После апгрейда Слаки с 12.1 до 12.2 Появилась следующая проблема. Внешний юсб-диск стал сам размонтироватся. Время работы каждый раз разное. Причем потом подмонтировать его не удается.
Лог:
Feb 7 00:45:18 alchemistra kernel: usb 1-4: USB disconnect, address 3
Feb 7 00:45:31 alchemistra kernel: usb 1-4: new high speed USB device using ehci_hcd and address 4
Feb 7 00:45:31 alchemistra kernel: usb 1-4: configuration #1 chosen from 1 choice
Feb 7 00:45:31 alchemistra kernel: scsi2 : SCSI emulation for USB Mass Storage devices
Feb 7 00:45:31 alchemistra kernel: usb 1-4: New USB device found, idVendor=05e3, idProduct=0702
Feb 7 00:45:31 alchemistra kernel: usb 1-4: New USB device strings: Mfr=0, Product=1, SerialNumber=0
Feb 7 00:45:31 alchemistra kernel: usb 1-4: Product: USB TO IDE
Feb 7 00:45:36 alchemistra kernel: scsi 2:0:0:0: Direct-Access SAMSUNG MP0603H 0811 PQ: 0 ANSI: 0
Feb 7 00:45:36 alchemistra kernel: sd 2:0:0:0: [sda] 117304992 512-byte hardware sectors (60060 MB)
Feb 7 00:45:36 alchemistra kernel: sd 2:0:0:0: [sda] 117304992 512-byte hardware sectors (60060 MB)
Feb 7 00:45:37 alchemistra kernel: sda: sda1
Feb 7 00:45:37 alchemistra kernel: sd 2:0:0:0: [sda] Attached SCSI disk
Feb 7 00:45:37 alchemistra kernel: sd 2:0:0:0: Attached scsi generic sg0 type 0
Feb 7 00:55:59 alchemistra -- MARK --
.....................
Feb 7 20:36:06 alchemistra -- MARK --
Feb 7 20:44:47 alchemistra kernel: usb 1-4: USB disconnect, address 4
Feb 7 20:44:48 alchemistra kernel: usb 1-4: new high speed USB device using ehci_hcd and address 5
Feb 7 20:44:48 alchemistra kernel: usb 3-2: new full speed USB device using ohci_hcd and address 3
Feb 7 20:44:48 alchemistra kernel: usb 3-2: not running at top speed; connect to a high speed hub
Feb 7 20:44:48 alchemistra kernel: usb 3-2: configuration #1 chosen from 1 choice
Feb 7 20:44:48 alchemistra kernel: scsi3 : SCSI emulation for USB Mass Storage devices
Feb 7 20:44:48 alchemistra kernel: usb 3-2: New USB device found, idVendor=05e3, idProduct=0702
Feb 7 20:44:48 alchemistra kernel: usb 3-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
Feb 7 20:44:48 alchemistra kernel: usb 3-2: Product: USB TO IDE
Feb 7 20:44:53 alchemistra kernel: scsi 3:0:0:0: Direct-Access SAMSUNG MP0603H 0811 PQ: 0 ANSI: 0
Feb 7 20:44:53 alchemistra kernel: sd 3:0:0:0: [sdb] 117304992 512-byte hardware sectors (60060 MB)
Feb 7 20:44:53 alchemistra kernel: sd 3:0:0:0: [sdb] 117304992 512-byte hardware sectors (60060 MB)
Feb 7 20:44:54 alchemistra kernel: sdb: sdb1
Feb 7 20:44:54 alchemistra kernel: sd 3:0:0:0: [sdb] Attached SCSI disk
Feb 7 20:44:54 alchemistra kernel: sd 3:0:0:0: Attached scsi generic sg0 type 0
Feb 7 20:44:55 alchemistra kernel: usb 3-2: reset full speed USB device using ohci_hcd and address 3
Feb 7 20:44:57 alchemistra last message repeated 3 times
Feb 7 20:44:57 alchemistra kernel: usb 3-2: USB disconnect, address 3
Feb 7 20:44:57 alchemistra kernel: scsi 3:0:0:0: [sdb] Result: hostbyte=0x01 driverbyte=0x00
Feb 7 20:44:57 alchemistra kernel: scsi 3:0:0:0: [sdb] Result: hostbyte=0x01 driverbyte=0x00
Feb 7 20:44:57 alchemistra kernel: usb 3-2: new full speed USB device using ohci_hcd and address 4
Feb 7 20:44:58 alchemistra kernel: usb 3-2: new full speed USB device using ohci_hcd and address 5
Feb 7 20:44:58 alchemistra kernel: usb 3-2: new full speed USB device using ohci_hcd and address 6
Feb 7 20:44:59 alchemistra kernel: usb 3-2: new full speed USB device using ohci_hcd and address