Hello,
Since I bought my macbook pro in 2011 i've tried every ubuntu release to see if I could use it as my default develop OS.
Well, every stock release failed so far and as I didn't have time to mess around with it I always ended giving up.
So here we are again with version 14.10 to see if we can get this working ;)
This macbook has a dual GPU: a AMD Radeon HD 6750M and a Intel HD Graphics 3000.
I don't care about GPU switching, I just need one and my external monitor connected via display port working.
Since Intel is well supported in Linux, I searched the internet and found some grub commands to disable the discrete GPU and use the integrated instead:
Ubuntu boots fine and everything seems to work.. except the external monitor.
In the screen configuration panel I can see that the external monitor IS detected but nothing is displayed.
In the logs theres several of messages like this:
Can someone help me? ):P
PS: I've tried installing the AMD proprietary drivers and ubuntu can't even boot up with those.
Thanks and kind regards,
Pedro Saraiva
Since I bought my macbook pro in 2011 i've tried every ubuntu release to see if I could use it as my default develop OS.
Well, every stock release failed so far and as I didn't have time to mess around with it I always ended giving up.
So here we are again with version 14.10 to see if we can get this working ;)
This macbook has a dual GPU: a AMD Radeon HD 6750M and a Intel HD Graphics 3000.
I don't care about GPU switching, I just need one and my external monitor connected via display port working.
Since Intel is well supported in Linux, I searched the internet and found some grub commands to disable the discrete GPU and use the integrated instead:
Code:
outb 0x728 1
outb 0x710 2
outb 0x740 2
outb 0x750 0In the screen configuration panel I can see that the external monitor IS detected but nothing is displayed.
In the logs theres several of messages like this:
Code:
too many voltage retries, give up
failed to train DP, abortingPS: I've tried installing the AMD proprietary drivers and ubuntu can't even boot up with those.
Thanks and kind regards,
Pedro Saraiva