If they are completely unresponsive, why do you get the -110 errors? I would expect you wouldn't get anything at all. They become unresponsive after the -110 errors. Dmesg will show nothing after those errors come up during boot. Failing that, can you at least provide a usbmon trace showing what happens when you plug a device into one of the bad ports? usbmon trace: I'm unable to get anything from doing "cat 0u && cat 5u && cat 6u" (which are all of the offending devices locations) And also a dmesg log with USB debugging enabled? dmesg shows nothing. I htink I'm missing something - to enable USB debugging all that needs to be done is mount the debugfs right? What type of motherboard or system is this? Mini ITX from ASRock. Can you try using a more up-to-date kernel, such as 4.4? I'll try, and get back to you. On Fri, Mar 4, 2016 at 1:59 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Fri, 4 Mar 2016, Devon Ash wrote: > >> I'm unable to use 8 of the 10 USB devices I have on a motherboard. Two >> USB 3.0 ports work, and all of the devices, if plugged into a hub, can >> be recognized and used if plugged through those 2 ports. However, the >> other ports are completely unresponsive. > > If they are completely unresponsive, why do you get the -110 errors? I > would expect you wouldn't get anything at all. > >> Thoughts/Ideas? The broken drivers are ehci-pci. xhci-hcd works on the >> usb 3.0 ports, but for 2 other usb 3.0 ports it does not work. >> >> The machine is being netbooted and running kernel 3.19-49-lowlatency >> (i've tried with generic as well). This same identical setup running >> off of a hard disk boot does not have this problem for any USB ports. >> Im lead to believe there may be a bug in the ehci-pci driver while >> using netboot. > > What type of motherboard or system is this? > > Can you try using a more up-to-date kernel, such as 4.4? > > Failing that, can you at least provide a usbmon trace showing what > happens when you plug a device into one of the bad ports? And also a > dmesg log with USB debugging enabled? > > Alan Stern > -- Devon Ash <a href="http://ca.linkedin.com/pub/devon-ash/48/478/981"; style="text-decoration:none;"><span style="font: 80% Arial,sans-serif; color:#0783B6;"><img src="https://static.licdn.com/scds/common/u/img/webpromo/btn_in_20x15.png"; width="20" height="15" alt="View Devon Ash's LinkedIn profile" style="vertical-align:middle" border="0">View Devon Ash's profile</span></a> -- 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
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