Comment 8 for bug 1529077

As I wrote in the bug description with the distribution kernel "Linux computer4 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux" everything is fine.

I have just checked it again: When I boot with the above kernel version, the CD player application detects the disc independent of it being inserted before the application is started or thereafter. And no USB device reset is show in the syslog in both cases.

This is in contrast to the behaviour I have described with the newer kernel versions.

Kernel version 3.13.0-72 had not been delivered to my installation. With 3.13.0-73 and the following ones the problem is present.

For 3.13.0-72 there is besides other entries the following in the changelog:

[ Upstream Kernel Changes ]

  * usb: make xhci platform driver use 64 bit or 32 bit DMA
    - LP: #1514971
  * usb: Add support for ACPI identification to xhci-platform
    - LP: #1514971
  * xhci: Workaround to get Intel xHCI reset working more reliably

Perhaps it has something to do with one of these changes.