14.04nvidianvidia-optimus
I read from here that Ubuntu 14.04 has native Optimus Technology support.Is this true or do I have to install the NVIDIA proprietary drivers?
If I have to install a proprietary driver which one is the correct for me?As you can see from the screenshot I get four options for proprietary drivers:
Even if the Supported Products tab on the driver download page says that GT420M is supported, the Optimus variants are not supported. From the Additional Information tab:
Some designs incorporating supported GPUs may not be compatible with the Nvidia Linux driver: in particular, notebook and all-in-one desktop designs with switchable (hybrid) or Optimus graphics will not work if means to disable the integrated graphics in hardware are not available.
This Optimus design means that the discrete Nvidia card is wired into the integrated Intel GPU and that it's not connected to a monitor at all. Some hybrid graphics laptops still allow you to choose the Nvidia card in BIOS, but most modern Optimus laptops don't have this option.
I am speaking from experience, I have a GT425M combined with an i5-460M processor. If there is no BIOS or hardware setting for switching / disabling the card, you're throwing away your money. The XPS 15 family does not appear to have any of these features. Although you are able to use the Intel graphics card, you may want to use the Nvidia card as well because you've paid for it which is not directly possible at the moment.
You'd better look for another laptop without Optimus. Optimus is crap and Nvidia refuses to provide better support for Linux. If you are adventurous and buy such a notebook, visit the Linux Hybrid Graphics blog and subscribe to its Launchpad mailing list. Visit their wiki for various ways to get such a card (hopefully) working. One method is called Bumblebee which allows you to render programs on your nvidia card. I currently recommend it over other solutions (disclosure: I'm a developer of it).
Ubuntu 12.10 Quantal will be shipped with the first bits for real support for hybrid graphics laptops, called PRIME. This is highly experimental and in development and probably not stable enough for many people. Only the open-source graphics drivers support this, though Nvidia may release support in the future too if it is not too much work for them. This page tracks hybrid graphics support for Quantal, these are the blueprints for Raring.
You've made a huge mistake by installing the drivers directly from nvidia.com. If you want to have newer drivers, add the ubuntu-x-swat/x-updates PPA because these will install the nvidia drivers in such a way that your Optimus system does not die.
After installing the nvidia driver from nvidia.com, you may experience loss of all graphics effects, black screen or very slow graphics performance. Uninstallation instructions:
netroot.Uninstall nvidia:
nvidia-uninstall
Remove the configuration file generated by nvidia if any:
rm /etc/X11/xorg.conf
Reinstall the Mesa package for GL:
apt-get --reinstall install libgl1-mesa-glx
When done, reboot with:
reboot
If you have installed Bumblebee or Ironhide before, be sure to check the instructions on http://wiki.bumblebee-project.org/Upgrading-on-Ubuntu
Since Bumblebee version 3.0 "Tumbleweed", it can disable the Nvidia card in a safe way to save power (press release). You can also run programs using the discrete card for better performance. Installation instructions:
Enable the Universe and multiverse repository for the Nvidia driver. 1.(optional for 13.10 Saucy) Add a PPA containing recent drivers as the one in the repositories is possibly outdated:
sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
(for 13.04 Raring and earlier, not needed for Saucy and later) Add the Stable Bumblebee Releases PPA:
sudo add-apt-repository ppa:bumblebee/stable
sudo apt-get update
Install Bumblebee using the proprietary Nvidia driver:
sudo apt-get install bumblebee bumblebee-nvidia linux-headers-generic
If you'd like to run a program on the nvidia card now, use the optirun program:
optirun firefox &
If you are only interested in power savings, replace the last command in step 4 by:
sudo apt-get install --no-install-recommends bumblebee linux-headers-generic
At a later time, you can still use NVIDIA by installing bumblebee-nvidia. If you want to use a 32-bit program, you can still install the required libraries with sudo apt-get install virtualgl-libs-ia32. You have to add linux-headers-generic, otherwise the power saving module bbswitch cannot be built.
Instead of virtualgl, you can also try primus to achieve better performance. The package name is primus and you can use:
primusrun glxgears
# alternative that is nearly the same:
optirun -b primus glxgears
(note: before asking about a 60 fps limit, please read its FAQ.)
See also https://wiki.ubuntu.com/Bumblebee
Notes:
acpi_call manually is deprecated. By default, it won't survive suspend.ppa:mj-casalogic/bumblebee or the MrMEEE/bumblebee-Old-and-abandoned git, it's not maintained anymore and contains a lot of errors.If you've accidentally installed the nvidia driver (i.e. using the jockey), you've two choices:
nvidia-current)If you don't have the option to switch GPUs in the BIOS then it's quite likely you have a muxless laptop, where the Nvidia GPU doesn't have direct access to the internal laptop display, and where it wouldn't make sense to switch off the Intel GPU.
Apart from the BIOS, there is a the vga_switcheroo command, which allows one to change which GPU acts as the primary GPU, but this command doesn't work on muxless laptops either -- you're not missing much though, it's tricky to use, and only works on a very limited set of hardware anyway.
It's not that dire though, as you have three options available to you:
Bumblebee and Optimus Prime allow you to use the Intel GPU most of the time, but to offload 3D rendering to the Nvidia GPU on a per program basis, and Nvidia Prime allows you to 'switch' which GPU is active, but using software muxing rather than hardware muxing.
I'd recommend reading an article I've written (Driving Multiple Monitors on an Optimus Laptop) that should hopefully give you a better understanding as to your options, and allow you to confirm whether your laptop definitely is muxless or not.
Best Answer
As far as I know, you do need to install the proprietary drivers to use this feature. You can just install the latest version of the drivers (which is the second to last one called nvidia-331-updates in the screenshot). When the drivers are installed, you should be able to access the Nvidia settings panel. In there, there is a tab called PRIME profiles, where you can switch between Intel (Power Saving) and NVIDIA (Performance).
The only downside is that you need to log out and back in in order to apply the changes.