On Mon, Mar 20, 2017 at 1:32 PM, Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> wrote: > On 20.03.2017 17:39, Diego Viola wrote: >> >> On Mon, Mar 20, 2017 at 11:21 AM, Mathias Nyman >> <mathias.nyman@xxxxxxxxxxxxxxx> wrote: >>> >>> On 19.03.2017 23:29, Diego Viola wrote: >>>> >>>> > >>>>> Still a problem with 4.11.0-rc2-ARCH+ >>> >>> 4.11-rc2 has better xhci tracing, it shows each URB enqueue and dequeue >>> and >>> giveback. >>> >>> Could you try enabling xhci tracing before suspending (not the same as >>> xhci >>> verbose dynamic debug) >>> It will generate a lot of data, so better to remove all extra USB >>> devices. >>> >>> xhci tracing can be added with: >>> >>> mount -t debugfs none /sys/kernel/debug >>> echo xhci-hcd >> /sys/kernel/debug/tracing/set_event >>> >>> and then send the output of cat /sys/kernel/debug/tracing/trace >> >> >> https://bugzilla.kernel.org/attachment.cgi?id=255367 >> >> This is with Linux 4.11.0-rc3-ARCH. >> >> USB mouse/keyboard was unplugged before booting the machine. >> >> I didn't do a suspend/resume before getting this trace, should I do that? >> >> Should I reproduce the hang and get a netconsole dmesg capture with >> tracing enabled? > > > A trace and a dmesg of the same suspend/reusume hang would be great. I can capture the dmesg with netconsole once the machine hangs, but I'm not sure how I could capture /sys/kernel/debug/tracing/trace after the hang. I'm unable to use ssh after the hang. > And if you can then one of a succesful suspend/resume for reference. Here's the trace after a successful suspend/resume: https://bugzilla.kernel.org/attachment.cgi?id=255369 > > (I haven't yet checked the one you added to bugzilla) > > -Mathias Diego -- 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
