[Bug 607375] Re: Kernel doesn't detect USB devices based on BIOS SATA settings

[Ryan Lovett]

** Description changed:

  This bug occurs in Lucid but was not present in Hardy.
  
  I installed Lucid on a Sun w2100z workstation and on first boot neither
  the keyboard nor the mouse were functioning nor were external USB flash
  drives detected. lsusb only returned two devices and they were the
  internal hubs. I searched for similar reports and the solution was
  usually to enable "Legacy USB" mode in the BIOS. This particular machine
  had no such option but it did have separate USB and USB 2.0 options
  which were both enabled.
  
  I decided to try flipping other options in the BIOS one by one and
  discovered to my amazement that enabling SATA causes USB to function.
  The workstation's only disks are on the SCSI bus. There was another
  option to enable the "SATA BIOS" once SATA was enabled, but that can be
  left off without affecting USB. The "SATA BIOS" option caused a boot
  message to appear which described the SATA controller but I don't know
  what else it does.
  
  Note that this workstation and our other w2100z's function fine while
  running Hardy and with SATA disabled.
  
+ The keyboard also works fine within the BIOS and grub regardless of the
+ SATA BIOS settings.
+ 
  Linux foobar 2.6.32-23-generic #37-Ubuntu SMP Fri Jun 11 08:03:28 UTC 2010 x86_64 GNU/Linux
  Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5

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Kernel doesn't detect USB devices based on BIOS SATA settings
https://bugs.launchpad.net/bugs/607375
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