I7 3770k 16GB DDR3 1600MHZ GTX 260

[gozames]

Hello, Two years now I'm trying to move on linux, this is my opinion I don't like windows, I have two video cards and 4 monitors, I don't want to run games and so on this only for work, GTX 260 and GT8600 they are old but working very well at windows, Unity not working thats for sure but even KDE working with problems, I have tryied to install stable nvidia, leatest nvidia from there site and last beta but graphics is any way much slower than in windows, this is important as I'm doing much work on all this monitors and speed really metters, can you please suggest what I can do ?

Thanks

[oldfred]

Are you sure you had nVidia driver and not Nouveau driver?

http://www.phoronix.com/scan.php?page=article&item=nvidia_windows8_geforce&num=1

[gozames]

Yes I'm using Nvidia for sure

[oldfred]

If you attempt to install more than one nVidia driver, without totally purging the old one and resetting xorg.conf.

# only reason to purge is there are several versions, if you know you have different nVidia use that:
#To see installed available versions:

dpkg -l | grep -i nvidia*

#Then for version installed
sudo apt-cache policy nvidia-319-updates

This is what I get:

fred@fred-Precise:~$ dpkg -l | grep -i nvidia*
ii nvidia-319-updates 331.38-0ubuntu0.0.1 Transitional package for nvidia-331-updates
ii nvidia-331-updates 331.38-0ubuntu0.0.1 NVIDIA binary Xorg driver, kernel module and VDPAU library
ii nvidia-settings 331.20-0ubuntu0.0.1 Tool for configuring the NVIDIA graphics driver

fred@fred-Precise:~$ sudo apt-cache policy nvidia-319-updates
nvidia-319-updates:
Installed: 331.38-0ubuntu0.0.1
Candidate: 331.38-0ubuntu0.0.1
Version table:
*** 331.38-0ubuntu0.0.1 0
500 http://mirror.anl.gov/pub/ubuntu/ precise-updates/restricted amd64 Packages
100 /var/lib/dpkg/status

# Houseclean out all old versions to avoid issues
sudo apt-get remove --purge < nvidiadriverpackagename>
# [ using the correct names] for each driver, before running:
sudo apt-get purge nvidia*
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.backup

# Install version you prefer
# I used nvidia-current-updates & nvidia-settings-updates, example
sudo apt-get install nvidia-current-updates
sudo apt-get install nvidia-settings-updates
sudo dpkg-reconfigure nvidia-current-updates
sudo nvidia-xconfig
sudo reboot
May want nvidia-current, nvidia-current-updates or nvidia-current-experimental-XXX for most recent testing version.

[gozames]

How I understood roblem is with Xinerama only when it's enabled, I think there is no alternatives at this time and it's very bad, more then 5 years people asking about it, Twinview also not working with 2 video cards, so I don't know what to do now as I have done everything but no success, more then 2 month I'm doing this, one chance to buy quadro card or somthing like this