Why am I stuck at 640x480 on an Optimus hybrid-graphics system?

Question

I have Intel HD 3000 graphics card onboard and nvidia 520 mx optimus techolonogy card. I was try to install Nvidia driver but it was failure. Now I cant use anything. Have one resolution 640x480 every media disconnected and I cant connect

$ xrandr Screen 0: minimum 320 x 200, current 640 x 480, maximum 8192 x 8192 LVDS1 connected 640x480+0+0 (normal left inverted right x axis y axis) 344mm x 194mm 640x480 59.9* VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis)

lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09

)

glxinfo | grep vendor server glx vendor string: SGI client glx vendor string: Mesa Project and SGI OpenGL vendor string: Tungsten Graphics, Inc Blockquote something wrong here I guess I try to some solutions but didnt work even it cant nvidia-xconfig file after these By the way system get eror sometimes about xorg Sorry for my English thaks for help.

Answer 1

I had this problem a couple of days ago every time I tried to install that driver.

Go to the terminal, and run
$ sudo nvidia-xconfig
$ sudo gedit /etc/X11/xorg.conf
Look for

HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0

Replace with

HorizSync 30.0 - 83.0
VertRefresh 56.0 - 75.0

Save. Reboot. Go to System Settings >> Displays and select the correct resolution.

Answer 2

I'm using Ubuntu 12.04. This really helped solved my problem of screen being stuck at 640 x 480. These two lines did the Job:

HorizSync 30.0 - 83.0
VertRefresh 56.0 - 75.0

Instead of

HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0

I got in these problems while trying to set Compiz effects and installing nVidia then I got this message when trying to launch nVidia Settings.

Also I got this nasty Message:

Could not apply the stored configurations for monitors

None of the selected modes were compatible with the possible modes:

Trying modes for CRTC 297
.
.
.
.
.

Followed by a long list...   CRTC 297: trying mode 1366x768@50Hz with output at 3286x1080@51Hz (pass 0)

When accessing nVidia:

You do not appear to be using the NVIDIA X driver. Please edit your X
configuration file (just run `nvidia-xconfig` as root), and restart the X server.