![]() For reference: outb 0x728 1 # Switch select I just added the outb lines in between the insmod gzio and linux_gfx_mode. ( || ) thenĮcho " gfxmode \$linux_gfx_mode" | sed "s/^/$submenu_indentation/"Įcho " outb 0x728 1" | sed "s/^/$submenu_indentation/"Įcho " outb 0x710 2" | sed "s/^/$submenu_indentation/"Įcho " outb 0x740 2" | sed "s/^/$submenu_indentation/"Įcho " outb 0x750 0" | sed "s/^/$submenu_indentation/"Įcho " insmod gzio" | sed "s/^/$submenu_indentation/"Įcho " if then insmod xzio insmod lzopio fi" | sed "s/^/$submenu_indentation/" If thenĮcho " load_video" | sed "s/^/$submenu_indentation/" # FIXME: We need an interface to select vesafb in case efifb can't be used. # Use ELILO's generic "efifb" when it's known to be available. What I devised is to add a few lines to grub to disable the discrete graphics at the efi level: $ cat /etc/grub.d/10_linux I happen to have the exact same computer as you. one must still have OS X installed, which I haven't! This is really shitty, because it means that I have no chance to turn off the NVIDIA GPU. UPDATE: After reading lots of documentation I've came to the conclusion that this only is possible by using method 3 on Macbook Pro, i.e. Its a basically fresh installation of Ubuntu 14.04 without any tweaks worth mentioning. The second method won't work either because I cannot install the propritary drivers, as described above. UPDATED: Booting into OS X and forcing the integrated graphics in gfxCardStatus 2.2.1.įirst method won't work for me because there is no BIOS on Macbooks.or switching to integrated graphics in nvidia-settings.Turning off the discrete graphics device in the BIOS.It held for about 3 hours with Mac OS when doing similiar work. So I would like to turn the NVIDIA graphics off completely and only use the Intel integrated graphics instead, because the battery only holds for ~1,5 hours when doing office work since I installed Ubuntu. I've been told that this is because the NVIDIA driver doesn't support the special hardware characteristics of the Macbook. When I install the propritary NVIDIA driver (340.76), the system hangs when I start the X-server. I have a Macbook Pro from 2010 that has NVIDIA graphics and Intel integrated agraphics: $ lspci|grep -i vgaĠ0:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12)Ġ1:00.0 VGA compatible controller: NVIDIA Corporation GT216M (rev a2)
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