This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- vivid' to 'verification-done-vivid'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-vivid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1489292 Title: System cannot detect USB device in BAT mode Status in HWE Next: Triaged Status in linux package in Ubuntu: Invalid Status in linux source package in Vivid: Fix Committed Bug description: [Impact] On some Skylake-U platforms, if boots with battery only and has no USB device connect, after boot the USB port can't be used, even though the xHCI Host Controller doesn't report any error in dmesg. The USB device looks like doesn't turn on, LED on USB mouse or keyboard doesn't light up. [Fix] There's a fix in mainline v4.2-rc3, though it states the fix is for Braswell, but the uuid use in the commit can also be found on Skylake-U platforms. Commit log is as follows: commit c3c5819a350952439c3198aa46581f9e4c46557f Author: Mathias Nyman <mathias.ny...@linux.intel.com> Date: Tue Jul 21 17:20:25 2015 +0300 xhci: call BIOS workaround to enable runtime suspend on Intel Braswell Intel xhci hw that require XHCI_PME_STUCK quirk have as default disabled xhci from going to D3 state in runtime suspend. Driver needs to verify it can deal with the hw by calling an ACPI _DSM method to get D3 enabled. Signed-off-by: Mathias Nyman <mathias.ny...@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> [Test] 1. Install the patched kernel 2. Boot with battery 3. Insert a USB device (disk, keyboard, mouse), should work normally To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1489292/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
