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[Bug 1242321] Re: USB 3.0 Harddrive not recognised

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Mohamad Putra Maghribi <1242321@xxxxxxxxxxxxxxxxxx>
Date: Tue, 17 Feb 2015 14:53:36 -0000
Reply-to: Bug 1242321 <1242321@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I have same problem with my ASUS u36sd and my 500gb external hdd on
elementary os freya.

It turns out that the problem only happens when my cpu runs on powersave
governor, but not when my cpu runs on performance governor. I use tlp to
set my cpu governor to powersave on battery an performance on ac.

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https://bugs.launchpad.net/bugs/1242321

Title:
  USB 3.0 Harddrive not recognised

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu is not recognising any device plugged into any USB 3.0 ports.
  Sometimes Ubuntu will freeze for a few seconds when you plug something
  into a USB 3.0 port; when Ubuntu comes out of the freeze, the device
  is still NOT recognised.

  No problems with USB 2.0 ports and devices.

  The USB 3.0 on this computer only works in Windows 7 (I'm dual booting
  Ubuntu 13.10 and Windows 7, both are 64-bit).

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