** Description changed:

  Desktop Hardware
  Abit IP35 motherboard, CPU Intel 6850, SATA hard disk drive set in IDE 
compatibility mode. Dlink G520+ PCI network
  card, Logitech wireless keyboard and mouse. 4 gig of RAM installed. Samsung 
T200HD lcd monitor.
  This PC previously had Ubuntu 7.04 installed and worked with no problems.
  
  Please note all the CDs used for testing and mentioned below were written on 
a Samsung Q35 notebook and all CDs were
  checksummed and tested by booting them up on the Q35 notebook, all were found 
to work normally.The 9.04 live cd was used
  to install a fully working version of Ubuntu to the Q35 notebook.
  
  1. Live CD containing the latest version of Mandriva boots and works on the 
Desktop and can be used to install a fully
  working system.
  2. Live CD containing the latest version of Fedora boots and works on the 
Desktop and can be used to install a working
  system.
  3. Live CD containing the latest version of Suse boots on the Desktop and can 
be used to install a full working system
  4. Live CD containing the latest version of Mepis works on the Desktop and 
can be used to install a full working system.
  
  4. Live CD containing Ubuntu 9.04 when I select the live system it loads and 
then goes to a blank screen with a frozen
  cursor. This happens even if safe graphics mode is selected or any of the 
other F6 options are used.
  If I select install it goes to a brown but otherwise blank Ubuntu screen with 
a frozen cursor.
  
  5. Live CD containing Ubuntu 8.10
  Same results as for CD 5 above
  
  6. Live CD containing Ubuntu 7.10 gives the same results as CDs 4 and 5
  
  7. Alternate CD containing Ubuntu 9.04 allows me to install a full system. 
However this system freezes with 2 minutes of a
  successful login  before I can access the boot log file.
  
  On the other hand this desktop hardware is happy to run kernel 2.6.29.3 and 
Gnome 2.26.1. as long as they are installed 
  from any major distribution except Ubuntu.
+ 
+ The reason for this bug is as follows. In the bios for the Abit IP35 and 
probably many other motherboards, there is an item
+ called 'Onchip Sata Device->Onchip Sata Mode'. This allows you to set the 
mode to IDE, RAID or AHCI.The default value
+ for this is IDE. Ubuntu live disks and Ubuntu installed systems will not work 
when this is set to IDE although all other
+ major distribution cope with any setting of this item, Ubuntu does not. It 
isn't always possible to set this to a working
+ setting, e.g. because the user may not even realise that this is the problem 
but also because changing this setting will
+ stop any previously installed operating system (such as Windows) from working.

** Tags added: sata

-- 
Hardware that works with all other major Linux distributions fails with Ubuntu 
later than 7.04
https://bugs.launchpad.net/bugs/388774
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