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[Bug 1376661] Re: Strange behaviour of ahci driver (intel 82801 Mobile SATA Controller)

 

** Package changed: linux-ports-meta (Ubuntu) => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1376661

Title:
  Strange behaviour of ahci driver (intel 82801 Mobile SATA Controller)

Status in “linux” package in Ubuntu:
  New

Bug description:
  Hi,

  I have a MSI GS60E Ghost Pro laptop. It is quite complex:

  2 SSD in raid 0  (intel Raid)
  1 HDD standard SATA
  2 Gpus (intel and nvidia)

  I was trying to upgrade my trusty to utopic.

  On trusty if I remember well there was no way to have a functionnal
  intel raid disks. I had to delete the raid an go to 2 separate disks
  to take advantage of the SSD (involved reinstalling secondary OS used
  for gaming).

  Legacy boot:
  On utopic, I can now use it  but the name of the device is still strange (don't know if it is expected, but on other scsi harware I had I always had standard names /dev/sdx...):

  /dev/mapper/isw_ihbcddegh_SSD, where SSD is the name given at raid
  creation of the volume.

  Despite of this device I still have access to bare device /dev/sda,
  /dev/sdb, with the added bonus of being able to destroy the raid on it
  if we let the default /dev/sda for grub install of utopic desktop
  (destroyed at the end of install).

  At install time we see /dev/mapper/isw_.... /dev/sda /dev/sdb and
  /dev/sdc, but it is readable on legacy installer even if not ideal.

  UEFI boot:
  If we boot on UEFI, it is more complex, as grub is not able to find the windows bootmanager for unknown reason (maybe not related).

  Don't know if I need to put it somewhere else, but at the install
  selection of disks and partitions, it is also a bit confusing as it
  show two devices for the raid /dev/mapper/isw_.... each with the copy
  of the partitions (split the raid) plus bare devices, /dev/sda,
  /dev/sdb. I don't remember, if I saw partitions on the bare devices
  equaly.

  I can make some undestructive tests for you (had hard time at making a
  working install on this machine). If really needed, I can switch to
  work on an other laptop, and go for destructive tests.

  You can find some hardware infos about the config there, setup, etc:

  http://paste.ubuntu.com/8478288/

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