bug, GUI installation doesnt see partitions

[OwiecPL1986]

I have exalty this computer:
http://www.sony.pl/product/vaio-seria-t/svt1311m1e

I download from ubuntu.com the newest 64-bit ubuntu.

The problem is when i try to install ubuntu gui instalator doesn`t see the partitions. In gparted i created ext4 partition and still gui installator doesn`t see this partition. Gpatred see all partitions and all is correct.

I dont have any idea what i can do with that, i lost all day to try find a solution.

My purpose is to install new system ubuntu but i want have still preinstalled windows 7.

[OwiecPL1986]

To be more precise:

GUI instalator detect /dev/sda but doesn't see any partitions.

When i click anything i have error:
Sorry, Ubuntu 12.10 has experienced an internal error.

In details i see:
ExecutablePath:
/usr/lib/ubiquity/bin/ubiquity

Package:
ubiquity 2.12.16

ProblemType:
Crash

Title:
ubiquity crashed with TypeError in partman_dialog(): 'NoneType' object is not subscriptable

[egravier]

Hello,

I have exactly the same problem as above.
My laptop is an Alienware M17xR4.

No partition is shown in the installation screen. Then when I press any button I get the same error as above...

Thanks a lot for any answer you could provide.

I tried the installation with doing F6 + nomraid option.
It doesn't change anything.

When I try ubuntu from the DVD without installing, everything is working fine. The hard drive partitions are correctly mounted.

[35a6nxh7wcnuwzv5gtzu]

Hello,

I got today the same ultrabook and wasted all the day with that problem. I finally found a solution on this website: http://www.webstimme.de/2013/01/11/ubuntu-linux-auf-ultrabook-von-sony-installieren-anleitung-howto/

You just need to uninstall dmraid. I have no idea why, but at least it worked for me.

[oldfred]

The UltraBooks use RAID to implement the Intel SRT.

Intel Smart Response Technology
http://www.intel.com/p/en_US/support/highlights/chpsts/imsm
Some general info in post #3
http://ubuntuforums.org/showthread.php?t=2071242
ubuntu 12.10 & Windows 8 oem Sony T & Intel SRT
http://ubuntuforums.org/showthread.php?t=2090605
Intel SRT - Dell XPS Screen shots of Intel SRT screens & lots of details
http://ubuntuforums.org/showthread.php?t=2038121
http://ubuntuforums.org/showthread.php?t=2036204
Details in post #10 on an install that worked
http://ubuntuforums.org/showthread.php?t=2020155
Dell XPS Intel SRT issue on hibernating post #25
http://ubuntuforums.org/showthread.php?t=1932965
Some info on re-instating details in post #9
http://ubuntuforums.org/showthread.php?t=2038121
http://ubuntuforums.org/showthread.php?t=2070491

Disable the RAID, for me it was using the Intel rapid management thingy and telling it to disable the acceleration or the use of the SSD. If you have a different system, just disable the RAID system then install Ubuntu. Once installed you can then re-enable it.
sudo dmraid -E -r /dev/sda
sudo dmraid -E -r /dev/sdb

You will need to use the dmraid command prior to running the Ubuntu Installer so that it will be able to see the partitions on the drive because otherwise with the raid metadata in place it will see the drive as part of a raid set and ignore its partitions.