On Fri, 9 Oct 2009, Alan Stern wrote: > On Sat, 10 Oct 2009, Benjamin Herrenschmidt wrote: > > > (Adding Rafael) > > > > On Sat, 2009-10-10 at 11:31 +1100, Benjamin Herrenschmidt wrote: > > > On Sat, 2009-10-10 at 11:25 +1100, Benjamin Herrenschmidt wrote: > > > > Hi folks ! > > > > > > > > My USB GSM modem (Huawei 169, pretty common stuff) stopped working in > > > > the latest ubuntu karmic update. So far, I tracked it down to a > > > > regression that happened in the stable releases between 2.6.31.1 and > > > > 2.6.31.2 (still present in .3). I haven't tested 2.6.32-rc* yet and > > > > haven't had a chance to bisect (need to make myself a trimmed > > > > down .config first). > This looks a lot like a hardware problem, such as bad USB cables. > Could you collect a usbmon trace for bus 4? It ought to show whether > this is the case or whether software is at fault. If it's not a hardware issue and the modem really does work okay in 2.6.31.1, you should also collect a usbmon trace under that kernel for comparison. 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
