RHEL: System enumerates and disconnects a USB device indefinitely
Issue
- When connecting an external USB drive to the server, the server fails to recognize the disk
- The following error message is seen in
/var/log/messages:
Jun 15 04:02:06 server kernel: usb 1-1: new high speed USB device using ehci_hcd and address 58
Jun 15 04:02:06 server kernel: usb 1-1: configuration #1 chosen from 1 choice
Jun 15 04:02:06 server kernel: scsi1981 : SCSI emulation for USB Mass Storage devices
Jun 15 04:02:08 server kernel: usb 1-1: USB disconnect, address 58
Jun 15 04:02:08 server kernel: usb 1-1: new high speed USB device using ehci_hcd and address 59
Jun 15 04:02:08 server kernel: usb 1-1: configuration #1 chosen from 1 choice
Jun 15 04:02:08 server kernel: scsi1982 : SCSI emulation for USB Mass Storage devices
Jun 15 04:02:11 server kernel: usb 1-1: USB disconnect, address 59
Jun 15 04:02:11 server kernel: usb 1-1: new high speed USB device using ehci_hcd and address 60
Jun 15 04:02:11 server kernel: usb 1-1: configuration #1 chosen from 1 choice
Jun 15 04:02:11 server kernel: scsi1983 : SCSI emulation for USB Mass Storage devices
Jun 15 04:02:14 server kernel: usb 1-1: USB disconnect, address 60
- This issue can be also observed in system without a USB drive or card attached
Environment
- Red Hat Enterprise Linux
- USB thumb drive
-
USB card reader
-
It is also seen on HP DL380 G6 systems
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Close
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.