On 04/27/14 03:57, Huang Wen Hui wrote: > More test: > system could not boot with "safe mode" in both case XHCI_IMOD_DEFAULT=1F4 > or 3E8. > > Huang Wenhui Hi, Looks like a hardware issue. Does the attached patch for sys/dev/usb/controller/xhci.c make any difference? --HPS