Hi Suja,
What is the start type of your device driver? i.e., it starts at system boot
or system start time, just try it after changing it’s startup time.
Hope this help.
Dev
-----Original Message-----
From: SUJA JAMES [mailto:xxxxx@rediffmail.com]
Sent: Wednesday, March 10, 2004 7:05 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] No USB device in DM after reboot
Hi All,
I have a USB device and it is working proper with the driver. But after
rebooting /booting my machine, this USB device is missing in Device Manager.
What actually happening is, device manager is failing to enumerate this USB
device ( unware of the presence of this device). Also my application is
failing to get a handle to this device.Now I need to unplug and plug this
USB device again for detection… I have 3 more USB device connected to the
same port and that is working fine even after reboot. Also the LEDs in this
USB device are also OFF at this condition. I noticed that, when I switch on
my PC, these LEDs are ON and after completing the windows boot progress bar,
these LEDs are getting OFF. The other USB device’s drivers are not written
by me and when contacted the Author, they told that they are doing a reset
in the USB while loading the driver. From net I can understand that after
reset I have to simulate Removal and Insertion. I hope this will help me.
Does anyone know how I can simulate this Removal and Insertion in
programatically or any other solution for this problem?
Thanks in advance
Suja
Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256
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