Please configure your email client to wrap lines after 72 columns or so. On Tue, 31 May 2011 linux@xxxxxxxxxx wrote: > Hello, > > I'm reproducing this disconnect-reconnect cycle caused by CyberPower UPS (mis?)using the usbhid interface. > > This same issue was occurring about a year ago, and was resolved by kernel update to 2.6.35.2 (around August 2010 archlinux i think). Do you have any pointers to the discussion leading to that update or to the particular code change that fixed the problem? > After recent update to 2.6.38.5 the issue reappears. > > Currently reproducing on 2.6.38.7 > > UPS model is CyberPower CP1500 AVR UPS, although issues occur with other models matching the VENDORID:PRODUCTID of 0764:0501, this includes model DX600E-FR and the model reported here by James. > > Captured usbmon data for 2 dis/reconnect cycles: tshark -V -i usbmon3 -w 2xdisconnect.cap > attached as tshark-V-iusbmon3-w-2xdisconnect.cap > (sorry if file attachment is bad for the list, please advise) Actually it's a lot easier to read output from usbmon's text interface than wireshark output. See the instructions in Documentation/usb/usbmon.txt. > If this hid issue warrants addressing, I could provide additional debug data, or test patches. The reason for the disconnects is not obvious. If it was already figured out and fixed, it would be a big help to know what the solution was (and why it is no longer working). 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
