Can't change desktop resolution (xrandr and desktop app)

[Jaime Pérez]

When changing resolution with menu or with xrandr command fails. Random colors and figures appear on the screen. I have tried both xorg-ati and fglrx drivers and the problem appears.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-18.38-lowlatency 3.13.6
Uname: Linux 3.13.0-18-lowlatency x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Fri Mar 21 13:48:28 2014
DistUpgraded: 2014-03-07 12:48:53,211 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 fglrx-updates, 13.350.1, 3.13.0-18-lowlatency, x86_64: installed
 virtualbox, 4.3.6, 3.13.0-17-lowlatency, x86_64: installed
 virtualbox, 4.3.6, 3.13.0-18-lowlatency, x86_64: installed
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde XT [Radeon HD 7770/8760 / R7 250X] [1002:683d] (prog-if 00 [VGA controller])
   Subsystem: PC Partner Limited / Sapphire Technology Device [174b:e244]
InstallationDate: Installed on 2014-02-08 (40 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: MSI MS-7640
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-18-lowlatency root=UUID=94224f17-82cd-44ee-91a4-2243806ae66c ro debug ignore_loglevel crashkernel=384M-:128M
SourcePackage: xorg
UpgradeStatus: Upgraded to trusty on 2014-03-07 (14 days ago)
dmi.bios.date: 10/08/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V19.9
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: 990FXA-GD65 (MS-7640)
dmi.board.vendor: MSI
dmi.board.version: 3.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 3.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV19.9:bd10/08/2012:svnMSI:pnMS-7640:pvr3.0:rvnMSI:rn990FXA-GD65(MS-7640):rvr3.0:cvnMSI:ct3:cvr3.0:
dmi.product.name: MS-7640
dmi.product.version: 3.0
dmi.sys.vendor: MSI
version.compiz: compiz 1:0.9.11+14.04.20140310-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
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
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: Fri Mar 21 13:46:31 2014
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input Logitech USB Optical Mouse MOUSE, id 8
 input LITEON Technology USB Multimedia Keyboard KEYBOARD, id 9
 input LITEON Technology USB Multimedia Keyboard KEYBOARD, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.0-1ubuntu7
xserver.video_driver: radeon