Hey! I'm (like two minutes) new to being on the Ubuntu forums, but I have a decent bit of Ubuntu knowledge.
I have a mid-2012 retina macbook pro and it has two graphics cards... one of them is a high-performance NVIDIA 650M and the other an intel HD4000. In OS X, only the HD4000 is active; it can be forced to run using gfxCardStatus for Mac and certain apps (like games) activate it.
In Ubuntu, I can only get ≈2 hrs. battery life since only the NVIDIA card will run. I've seen some other forums on this and tried every single suggestion; they no longer work with 14.04 and the SMC firmware upgrade.
Has anyone had success getting 14.04 and the HD4000 to coexist? As of the latest version intel graphics installer does run but I can't get it to switch to the integrated card
On OS X going integrated-only shoots battery life above 8hrs with browsing or reading. If I could get that on Ubuntu, I would switch to it as a primary OS!
I've got a pretty complex multi-boot system; here's the output of diskutil list in OS X:
disk0s0 is GPT (with hybrid MBR set up for BOOTCAMP), s1 is EFI, s2 is my primary OS X partition (with rEFInd installed as a boot picker), s3 is the OS X 10.10 beta, s4 is BOOTCAMP, s5 is Ubuntu 14.04, s6 is swap for Ubuntu, s7 is a shared storage FAT partition, s8 is another OS X partition for repairs and so I can have an OS X recovery partition (they have to immediately follow an OS X partition), and s9 is that recovery partition.
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *751.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_HFS Mac SSD 423.2 GB disk0s2
3: Apple_HFS Yosemite 63.3 GB disk0s3
4: Microsoft Basic Data BOOTCAMP 180.1 GB disk0s4
5: Microsoft Basic Data 48.0 GB disk0s5
6: Linux Swap 16.1 GB disk0s6
7: Microsoft Basic Data SHARE 4.0 GB disk0s7
8: Apple_HFS Mac Recovery 14.6 GB disk0s8
9: Apple_Boot Recovery HD 650.0 MB disk0s9