I disabled USB 2.0 in the BIOS of my PC and blacklisted ehci-hcd. Haven't seen Xacterrs or any other abnormalities. But phone is still not responding to AT commands. Spent some time comparing the usb snoops on Windows XP (phone works) to the wireshark on ubuntu. The bulk transfer transactions seem similar - but there could be differences in the control transfers. Not sure what to try next ! Regard Ashok On Thu, May 31, 2012 at 2:04 AM, Oliver Neukum <oliver@xxxxxxxxxx> wrote: > Am Donnerstag, 31. Mai 2012, 06:00:42 schrieb Ashok Rao: >> I also changed ehci.h to set the XacErr retry limit to 1 and rebuilt >> the kernel - but that did not fix the hung problem and lack of >> response. >> >> Previous emails from Alan Stern on the XactErrs have indicated the >> possibility of a hardware/software error in the usb device >> controller. All I can say is that the same behaviour has been seen in >> 2 phones - of course it is possible that the mfgr's implementation is >> faulty and just happens to work against Windows hosts. > > This needs to be ruled out. Are you on a system that has a physical OHCI > or UHCI controller? If so, please unload ehci_hcd so that the bus falls > back to the old controller. > > 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
