On Thu, 21 Apr 2016, John wrote: > jbMacAZ <mailto:jbmacbrodie@xxxxxxxxx> 2016-04-20 22:39:07 UTC > > System hangs requiring hard reboot. System behaves normally with earlier > kernels upto 4.6-rc3. Reverting all edits to drivers/USB/ between rc3 > and rc4 does NOT fix the problem. Problem first appears at > 4.6-rc3-next20160412, still present 4.6-rc4-next20160420. > > To reproduce, attach a powered USB hub to USB3 port on an ASUS T100CHI. > Attach a USB thumb drive (mine was 32GB Samsung USB3.0) to powered hub. > Boot into latest kernel, unmount flash drive. Unplug it and the system > freezes. May freeze when plugging in a flash drive, but not as > consistent. Simplest workaround is to use older kernel (like -rc3). > > Other details: Ubuntu 16.04 (i686) 2GB Ram, Intel baytrail atom Z3775, > generic USB2 4-port hub (BC 1.1 charging) OTG cable micro USB3.0 to USB-A. Have you tried using git-bisect to find the commit that caused the problem? I recommend not using the -next for tracking down a bug like this. That repository is not stable over time. 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
