On Wed, 11 Apr 2012, Calin Demian wrote: > 1.Boot problem: computer stops responding during boot. > > 2.The symptom doesn't occur allways, but when it does, it is at the > same point during the boot process. The last messages displayed differ > between different kernel versions, but are the same each time. > I would appreciate if you could take a look at function > "quirk_usb_handoff_ohci" in file /drivers/usb/host/pci-quirks.c - > which was modified in version 3.0.17 of the mainline kernel. The > problem appeared when upgrading Ubuntu from mainline kernel version > 3.0.13 to version 3.0.20. Searching the changelogs I found that this > function was modified between the two releases. The computer freezes > durin applying the quirks (pci_apply_final_quirks) for bus > 0000:00:13.1 (the 2nd OHCI bus). Controller is ALI (EHCI 8 ports + > OHCI 3x3 ports), dev_id 5237(OHCI). Can you figure out exactly where the computer stops, by adding printk lines to the quirk_usb_handoff_ohci function? 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