Alan, I actually created a dropbox account, these are the links. I believe this was the order in which i performed the tests: http://dl.dropbox.com/u/72741231/usbmon-sunplus-1bcf_0c31-teac_dv_w28ss_rz3-TEST-20120411.1-f16.out.gz http://dl.dropbox.com/u/72741231/blktrace-sunplus-1bcf_0c31-teac_dv_w28ss_rz3-TEST-20120411.1-f16.out.gz http://dl.dropbox.com/u/72741231/usbmon-sunplus-04fc_0c25-teac_dv_w28ss_rz3-TEST-20120411.1-f16.out.gz http://dl.dropbox.com/u/72741231/blktrace-sunplus-04fc_0c25-teac_dv_w28ss_rz3-TEST-20120411.1-f16.out.gz http://dl.dropbox.com/u/72741231/usbmon-JMicron-152d_2338-teac_dv_w28ss_rz3-TEST-20120411.1-f16.out.gz http://dl.dropbox.com/u/72741231/usbmon-JMicron-152d_2338-teac_dv_w28ss_rz3-TEST-20120411.2-f16.out.gz http://dl.dropbox.com/u/72741231/blktrace-JMicron-152d_2338-teac_dv_w28ss_rz3-TEST-20120411.2-f16.out.gz Thanks in advance. On Wed, Apr 11, 2012 at 6:22 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 11 Apr 2012, Reartes Guillermo wrote: > >> Alan, >> >> Thanks for the quick answer. >> >> >> Messages: >> >> XXXX kernel: [ 6027.939013] usb 2-1.1: reset high-speed USB device >> >> number 7 using ehci_hcd >> >> >> >> When that happens, all said bridges do disconnect and reset. >> >> They came back and remain functional. But sometimes with certain effects. >> >> >> >> Like when (04fc:0c25) was disconnected and reset. it came back, but >> >> the touchpad became sloppy and some false keypresses happened. Reset >> > >> > What touchpad? Does your DVD drive have a touchpad? >> >> No, of course :-) >> It did affect my laptop's touchpad (choppy movement) and keyboard (key >> pressed on their own) until i rebooted. >> >> >> was required. Problem >> > What sort of reset? The log message above indicates that the device >> > had just been reset; why did it need another reset? >> >> The growisofs error: >> :-[ WRITE@LBA=0h failed with SK=3h/POWER CALIBRATION AREA ERROR]: >> Input/output error >> happens with such writer attached directly to a sata controller, so it >> is definitivelly not usb related. >> >> I believe that when such error happens with said writer attached to >> such USB-SATA bridges (or maybe others) sometimes >> the bridge disconnects, resets ans return, instead of giving the same >> error again without disconnecting. > > Yes, probably the bridge doesn't know how to handle that kind of error. > >> Or maybe there is another >> error/event/issue that causes the disconnection and reset. I am not >> saying that the reset is wrong, but i am investigating why those >> bridges are being disconnecting. >> >> > If you want to track this down, you should collect a usbmon trace. >> > Read the instructions in Documentation/usb/usbmon.txt. >> >> I Captured them when that happened (using the port to where the bridge >> were plugged) >> >> # cat /sys/kernel/debug/usb/usbmon/2u > ~/file.out >> >> Two of them are prety big, 3mb (compressed) and one not so much. >> should i upload them somewhere or attach them here? > > If you can find a good place, upload them. > > Alan Stern > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
