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Occasional Core Dump with hot swap USB Thumb Drive


 
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Operating Systems SCO Occasional Core Dump with hot swap USB Thumb Drive
# 1  
Old 09-29-2009
Network Occasional Core Dump with hot swap USB Thumb Drive

Hello Unix World,
I've been having this issue for the longest time.
Here is my setup
OS: SCO OpenServer 6.0 with mp4, mp3
Server: Dell PowerEdge 840, 800, 2900
USB Stick: Patriot 16GB High Speed, and many other different brands.

Occasinaly while system is running and USB is pluged in the main console will
start looping the following
... Disk Drive: HA4 TC0 LU0 - I/O ERROR 0x4DD13002 HCI Driver
and if unpluged and pluged back in the system will dump core.

Anyone else experience the same problem or maybe know a fix for it?
Please post here. Thank you

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The first version of the 802.11 protocol was released in 1997, and provided up to 12 MB/s link speeds.
True or False?

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USB(4)							   BSD Kernel Interfaces Manual 						    USB(4)

NAME
usb -- Universal Serial Bus SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file: device usb Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): usb_load="YES" USERLAND PROGRAMMING
USB functions can be accessed from userland through the libusb library. See libusb(3) for more information. DESCRIPTION
FreeBSD provides machine-independent bus support and drivers for USB devices in host and device side mode. The usb driver has three layers: USB Controller (Bus) USB Device USB Driver The controller attaches to a physical bus like pci(4). The USB bus attaches to the controller, and the root hub attaches to the controller. Any devices attached to the bus will attach to the root hub or another hub attached to the USB bus. The uhub device will always be present as it is needed for the root hub. INTRODUCTION TO USB
The USB is a system where external devices can be connected to a PC. The most common USB speeds are: Low Speed (1.5MBit/sec) Full Speed (12MBit/sec) High Speed (480MBit/sec) Each USB has a USB controller that is the master of the bus. The physical communication is simplex which means the host controller only com- municates with one USB device at a time. There can be up to 127 devices connected to an USB HUB tree. The addresses are assigned dynamically by the host when each device is attached to the bus. Within each device there can be up to 16 endpoints. Each endpoint is individually addressed and the addresses are static. Each of these endpoints will communicate in one of four different modes: control, isochronous, bulk, or interrupt. A device always has at least one end- point. This endpoint has address 0 and is a control endpoint and is used to give commands to and extract basic data, such as descriptors, from the device. Each endpoint, except the control endpoint, is unidirectional. The endpoints in a device are grouped into interfaces. An interface is a logical unit within a device; e.g. a compound device with both a keyboard and a trackball would present one interface for each. An interface can sometimes be set into different modes, called alternate set- tings, which affects how it operates. Different alternate settings can have different endpoints within it. A device may operate in different configurations. Depending on the configuration, the device may present different sets of endpoints and interfaces. The bus enumeration of the USB bus proceeds in several steps: 1. Any interface specific driver can attach to the device. 2. If none is found, generic interface class drivers can attach. SEE ALSO
The USB specifications can be found at: http://www.usb.org/developers/docs/ libusb(3), usbdi(4), aue(4), axe(4), cue(4), ehci(4), kue(4), ohci(4), pci(4), rue(4), ucom(4), udav(4), uhci(4), uhid(4), ukbd(4), ulpt(4), umass(4), ums(4), uplcom(4), urio(4), uvscom(4), usbconfig(8) STANDARDS
The usb module complies with the USB 2.0 standard. HISTORY
The usb module has been inspired by the NetBSD USB stack initially written by Lennart Augustsson. The usb module was written by Hans Petter Selasky <hselasky@freebsd.org>. BSD
May 20, 2009 BSD

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