Yes I tried Sarah's suggestions and disabled power management. but same results. The time how long it takes until XHCI stops responding is sometimes only 1 second, sometimes several minutes ---------------------------------------- > Subject: Re: PROBLEM: XHCI Host Controller on Intel Panther Point with CDC/ACM dead after massive NAK > From: oneukum@xxxxxxx > To: andreaskasberger@xxxxxxxxxxx > CC: stern@xxxxxxxxxxxxxxxxxxx; sarah.a.sharp@xxxxxxxxxxxxxxx; peter@xxxxxxxx; linux-usb@xxxxxxxxxxxxxxx; mathias.nyman@xxxxxxxxx > Date: Wed, 10 Sep 2014 11:36:35 +0200 > > On Wed, 2014-09-10 at 07:04 +0000, Kasberger Andreas wrote: >> So I am back with more tests on this problem. >> Intel itself told us it is a problem on the driver for the XHCI host controller. I will put some stuff here now what I goo from Intel: >> >> Let me explain why I came back to you with this problem. >> We have already tried the same thing with an "echo device" from Ellisys to see if the problem came from our board. >> And we got also with this very simple device (just echoing) the same problem. >> XHCI host controller do not respond anymore >> >> So it has nothing to do with our board and it is a bug exisiting on the current Linux kernel >> >> Here some short mail traiffic between Intel and our company. I removed the helpless parts > > Your trace hasn't made it through the list. Anyway, have you tried > following Sarah's suggestion and tried without LPM? > > Regards > Oliver > > > -- > 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 -- 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
