On 15/06/15(Mon) 20:58, pstern wrote: > hello: > > I've have been unable to install 5.7 on a Dell Optiplex 3020 SFF bios A07. > The install disk hangs trying to load the xHCI uhub0 driver. > > The Dell bios only provides a way to disable specific ports, no way to > disable USB 3.0 support. > > I tried a snapshot from 06jun15 but ran into the same hang problem. > > This computer handles OpenBSD 5.6 with no problem because it loads EHCI > rev 2.00/1.00 addr 1. > > See dmesg for 5.6 below. Can't capture the 5.7 boot. > > The 5.7 line where it hangs is > > uhub0 at usb0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 > > I found a thread talking about problems with the xhci driver with the > suggestion to remove all devices from the usb ports. > > When nothing is plugged into usb ports, 5.7 will boot successfully. If a > usb data drive is plugged in, the boot hangs. A usb label printer gets > power from the bus until the xhci driver tries to load then power > disappears amd the system hangs > > I've let the system sit for 15 minutes to see if there would be a timeout > but it remains hung. > > Is this issue being researched for current?
It has been researched by mikeb@ so far without any success. I don't have access to a machine with "Intel 8 Series USB" xHCI controller so I can't help. As a workaround you might try disabling xhci.
