- 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USB device using ehci_hcd and address 6 Aug 22 17:41:32 localhost kernel: Warning: /proc/ide/hd?/settings interface is obsolete, and will be removed soon!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
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