- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 5
- Why getting the below error message under /var/log/messages file ?
Aug 22 00:52:01 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6 Aug 22 01:10:08 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6 Aug 22 04:04:34 localhost init: Trying to re-exec init Aug 22 06:21:16 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6 Aug 22 12:47:14 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6 Aug 22 16:34:29 localhost last message repeated 2 times Aug 22 17:21:17 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6 Aug 22 17:41:32 localhost kernel: Warning: /proc/ide/hd?/settings interface is obsolete, and will be removed soon!
- To fix this problem may be following steps will be helpful:
1. Replace hardware: In most cases you need to replace the motherboard. 2. Remove ehci_hcd driver temporarily 3. Disable ehci_hcd drive USB 2.0 interface and use it as USB 1.1. In short disable the ehci_hcd.
Disabling the ehci_hcd driver
1) Blacklist ehci_hcd driver by editing the appropriate modprobe configuration file indicated below with the entry listed:
2) Save and close the file. Finally, use the mkinitrd script to construct a directory structure that can serve as an initrd root file system without ehci_hcd:
On RHEL5 // Backup the initrd at first # cp /boot/initrd-$(uname -r).img /boot/initrd-$(uname -r).img.bak // Rebuild initrd # mkinitrd -f -v /boot/initrd-$(uname -r).img $(uname -r) On RHEL6 //Backup the initramfs at first # cp /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r).img.bak //Rebuild initramfs # dracut -f
3) For testing purpose reboot the system:
- For rebuilding the initial ramdisk image see: How to rebuild the initial ramdisk image in Red Hat Enterprise Linux
- Note: It is not aboslutely necessary to reboot the system. Just keep in mind that the messages will keep appearing in the logs till the system reboots. This is not a system critical message and should be okay to live with.
The Enhanced Host Controller Interface (EHCI) is a register-level interface that enables a host controller for USB or FireWire hardware to communicate with a host controller driver in software.
This error indicates that USB 2.0 may not function on your system, or may function only at USB 1.1 speeds.
- To collect more information about the
EHCIcontroller, following commands can be used:
# lspci |grep -i ehci # lsusb -v | less
- Red Hat Enterprise Linux
This solution is part of Red Hat’s fast-track publication program, providing a huge library of solutions that Red Hat engineers have created while supporting our customers. To give you the knowledge you need the instant it becomes available, these articles may be presented in a raw and unedited form.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.