Is there anybody, who is able to install Ubuntu 12.04 or 14.04 (64bit) on Lenovo Thinkpad T440p and get fully functional NVIDIA Optimus? This laptop model is certified by Canonical to be fully supported by Ubuntu, but install Ubuntu 14.04 is nearly impossible, due to the fact, that 14.04 desktop ISO image crash during initial boot.
Any help?
See, for exmaple: ThinkPad T440p: problems with various Ubuntu flavours
Add info regarding bad 12.04 support: T440p problems with 12.04
Best Answer
Downgrade BIOS from 2.22 to 1.14 resolved mine problems.
BIOS update utility :
http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS037575
I've ran file 'gluj04us.exe' (1.14 BIOS) from Windows 7, then Laptop restarted 3 times (flash operations).
After 4th reboot laptop I've reinstalled Ubuntu 14.04 and every hardware stuff working properly.