On Mon, 12 Apr 2010, Andrew Morton wrote: > > https://bugzilla.kernel.org/show_bug.cgi?id=15767 > > > > Summary: Kernel does not recognize USB devices on some machines > > Product: Other > > Version: 2.5 > > Kernel Version: 2.6.32-20 > > Kernels from 2.6.32-20 up to Friday's git do not recognize certain USB devices, > > and hence do not load. What makes you think that the kernel doesn't recognize certain USB devices? Which devices doesn't it recognize? Does unplugging those devices make any difference? Failure to recognize a USB device will not cause the kernel to fail to load. Most likely the problem has a different cause. You can test this by booting with "nousb" on the kernel command line; that will prevent the USB stack from running at all. > > The problem was brought to attention in the Ubuntu bug tracker system, bug > > 561140. > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/561140 > > However, I compiled and installed the kernel from git on Friday, 2.6.34, and > > the problem is with the kernel. Does that kernel contain the fix listed in the Ubuntu bug report? Have you tried booting with "acpi=off" on the command line, as recommended in the bug report? You need to provide much more information; otherwise nobody will have a clue as to where to look for the problem. For example, apart from all the questions above, what shows up on the screen when the computer hangs? 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
