During my x1000 recovery I found mistakes I made as I mentioned in another post. One mistake was my Monitor setting, I presume. My Monitor was set to sRGB Mode instead of Standard Mode. Still connected via HDMI. So I just tried booting Ubuntu Remix with the 4.0.7 Kernel. Watched the booting sequence and to my surprise all ok except for the obvious [Fail] on Bluetooth. BINGO!! It booted!! Just wanted to let you know!
Monitor: Asus PA248Q IPS
Res - 1920 x 1200
Mode - Standard
Connection - HDM
I will try this again to prove repeatability. Something in the command line:
CFE> setenv bootargs "root=/dev/ramdisk file=/cdrom/preseed/ubuntu.seed boot=casper quiet ro splash --"
I made an accidental error in this line leaving out [splash --"] I think. Or [--''] I can't repeat it.
Cheers!!

John