low reolution

i have two DELL screens with 1280x1024 resolution.
1st connected visa VAG is working fine
2nd connected visa DVI-i-1 using a DVI-i to SVGA connector does not show full resolution its showing as Unkonw Display. with max resolution of 1024x768 I can add high resolution suing following commnds
sudo xrandr --newmode "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync
sudo xrandr --addmode DVI-I-1 "1280x1024_60.00"
xrandr output addmode DVI-I-1 node "1280x1024_60.00"

but every time i restart this setting is lost.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg (not installed)
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,resize,regex,vpswitch,screenshot,imgpng,gnomecompat,scale,mousepoll,move,place,session,expo,grid,snap,workarounds,unitymtgrabhandles,wall,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Wed Aug 20 19:18:47 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 bbswitch, 0.7, 3.13.0-32-generic, x86_64: installed
 bbswitch, 0.7, 3.13.0-33-generic, x86_64: installed
 bbswitch, 0.7, 3.13.0-34-generic, x86_64: installed
 nvidia-331, 331.38, 3.13.0-34-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 NVIDIA Corporation GF108 [GeForce GT 620] [10de:0f01] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Palit Microsystems Inc. Device [1569:0f01]
InstallationDate: Installed on 2014-06-21 (60 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Gigabyte Technology Co., Ltd. G41MT-S2PT
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-34-generic root=UUID=b771363c-f937-42e2-b93f-6babbc14f99a ro DVI-I-1:d quiet splash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/03/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: FA
dmi.board.name: G41MT-S2PT
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrFA:bd08/03/2011:svnGigabyteTechnologyCo.,Ltd.:pnG41MT-S2PT:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnG41MT-S2PT:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: G41MT-S2PT
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Wed Aug 20 19:05:46 2014
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input Dell Dell USB Keyboard KEYBOARD, id 8
 input USB OPTICAL MOUSE MOUSE, id 9
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2
xserver.video_driver: nouveau