So I bought my Dell Inspiron 5720 month ago. Sure the first thing I did was purging Windows and installing Ubuntu 12.04. Now, I use it for a month already. Only driver I installed during all this time was Broadcom adapter driver so that Wi-Fi could work.
So I never really installed video adapter driver, even though my laptop has a powerful NVIDIA GeForce GT 630M video adapter .System settings say that Intel® Ivybridge Mobile adapter is used instead.
I never really had any problems with laptop performance capacity: movies play very good, web and IDEs work fast. I never played on it though.
My question is: Do I need to install Nvidia adapter drivers? Why should I do it?
Thanks!
UPD:
Forgot to mention: I don't have anything in my Additional Drivers section.
Here is how it looks like:
lspci results:
lspci -v gives
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge
Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem:
Dell Device 0565 Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at f1000000 (64-bit, non-prefetchable) [size=4M] Memory at
e0000000 (64-bit, prefetchable) [size=256M] I/O ports at 4000
[size=64] Expansion ROM at [disabled] Capabilities:
Kernel driver in use: i915 Kernel modules: i915
and
01:00.0 3D controller: NVIDIA Corporation Device 1140 (rev a1)
Subsystem: Dell Device 0565 Flags: fast devsel, IRQ 16 Memory at
f0000000 (32-bit, non-prefetchable) [size=16M] Memory at c0000000
(64-bit, prefetchable) [size=256M] Memory at d0000000 (64-bit,
prefetchable) [size=32M] I/O ports at 3000 [size=128] Expansion ROM
at [disabled] Capabilities: Kernel
modules: nouveau, nvidiafb
You may want to look at these resources:
https://wiki.ubuntu.com/Bumblebee
I believe your laptop has the on-demand discrete GPU feature called "optimus"
This is currently not well supported by NVIDIA under linux. Bumblebee gives you a work around.
NVIDIA has made indications that they are working on a Linux Optimus driver, but it has yet to be released
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