On Fri, Jan 20, 2006 at 12:30:36PM +0530, rasmit.ranjan@xxxxxxxxx wrote: > hi, > In my system Linux-2.6.13.3 swsusp works properly. Have you tried 2.6.15? And enabled CONFIG_USB_SUSPEND? > Now one usb-serial convertor device is attached to my system. I manually > loaded the driver for the device and attached the device to my system.At > this stage swsusp works properly. But my device is not in use. So resume > works properly. > Now i opened minicom terminal for ttyUSB0 and ttyS0 ( now my device is > in use ) and suspend my system. My system got suspended but did not get > resumed and showed the follwing messages on screen. > > usb 1-1: USB disconnect,address 4 > usb 1-1: usb_disable_device nuking all URBs > usb 1-1: unregistering interface 1-1:1.0 > rasmit 1-1:1.0 device disconnected > usb 1-1:1.0 : hot plug > > My device was connected to 1-1:1.0 > The driver for usb-serial convertor does not have suspend/resume > functions. Which usb-serial driver are you using for this device? > Is it happening because of the driver does not handle suspend/resume or > for any other reason ? None of the usb-serial drivers handle suspend/resume natively, they rely on the usb core to do a disconnect and reconnect, which will probably cause your terminal to be disconnected, like you see. So, I guess everything is working properly :) thanks, greg k-h