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I have been using Ubuntu with a dual screen for years now, after upgrading to 12.04 LTS i cannot get my dual screen working properly

Graphics:

01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV350 AR [Radeon 9600]

01:00.1 Display controller: Advanced Micro Devices [AMD] nee ATI RV350 AR [Radeon 9600] (Secondary)

I noticed i was using open source drivers and attempted to install official binaries using the methods in this thread.

Output:

liam@liam-desktop:~$ sudo apt-get install fglrx fglrx-amdcccle

Reading package lists... Done

Building dependency tree       

Reading state information... Done

The following packages will be upgraded:

  fglrx fglrx-amdcccle

2 upgraded, 0 newly installed, 0 to remove and 12 not upgraded.

Need to get 45.1 MB of archives.

After this operation, 739 kB of additional disk space will be used.

Get:1 http://gb.archive.ubuntu.com/ubuntu/ precise/restricted fglrx i386 2:8.960-0ubuntu1 [39.2 MB]

Get:2 http://gb.archive.ubuntu.com/ubuntu/ precise/restricted fglrx-amdcccle i386 2:8.960-0ubuntu1 [5,883 kB]                                          

Fetched 45.1 MB in 1min 33s (484 kB/s)                                                                                                                 

(Reading database ... 328081 files and directories currently installed.)

Preparing to replace fglrx 2:8.951-0ubuntu1 (using .../fglrx_2%3a8.960-0ubuntu1_i386.deb) ...

Removing all DKMS Modules

Error! There are no instances of module: fglrx

8.951 located in the DKMS tree.

Done.

Unpacking replacement fglrx ...

Preparing to replace fglrx-amdcccle 2:8.951-0ubuntu1 (using .../fglrx-amdcccle_2%3a8.960-0ubuntu1_i386.deb) ...

Unpacking replacement fglrx-amdcccle ...

Processing triggers for ureadahead ...

ureadahead will be reprofiled on next reboot

Setting up fglrx (2:8.960-0ubuntu1) ...

update-alternatives: warning: forcing reinstallation of alternative /usr/lib/fglrx/ld.so.conf because link group i386-linux-gnu_gl_conf is broken.

update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist.

update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist.

update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist.

update-alternatives: warning: forcing reinstallation of alternative /usr/lib/fglrx/ld.so.conf because link group i386-linux-gnu_gl_conf is broken.

update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist.

update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist.

update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist.

update-initramfs: deferring update (trigger activated)

update-initramfs: Generating /boot/initrd.img-3.2.0-25-generic-pae

Loading new fglrx-8.960 DKMS files...

Building only for 3.2.0-25-generic-pae

Building for architecture i686

Building initial module for 3.2.0-25-generic-pae

Done.



fglrx:

Running module version sanity check.

 - Original module

   - No original module exists within this kernel

 - Installation

   - Installing to /lib/modules/3.2.0-25-generic-pae/updates/dkms/



depmod.......



DKMS: install completed.

update-initramfs: deferring update (trigger activated)

Processing triggers for bamfdaemon ...

Rebuilding /usr/share/applications/bamf.index...

Setting up fglrx-amdcccle (2:8.960-0ubuntu1) ...

Processing triggers for initramfs-tools ...

update-initramfs: Generating /boot/initrd.img-3.2.0-25-generic-pae

Processing triggers for libc-bin ...

ldconfig deferred processing now taking place

liam@liam-desktop:~$ sudo aticonfig --initial -f

aticonfig: No supported adapters detected

When i attempt to get my settings back to what they were before upgrading i get this message

requested position/size for CRTC 81 is outside the allowed limit: position=(1440, 0), size=(1440, 900), maximum=(1680, 1680)

and

GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gnome_2drr_2derror_2dquark.Code3: requested position/size for CRTC 81 is outside the allowed limit: position=(1440, 0), size=(1440, 900), maximum=(1680, 1680)

Any idea's on what i need to do to fix this issue?

Dual monitor support is buggy in Ubuntu 12.04 with ati gfx cards. Now I am not sure if this is because of ubuntu or its due to propriety amd drivers. Anyways I am on dual monitor setup as well and I managed to get multiple monitors working by reinstalling ATI catalyst drivers.

First remove your existing Catalyst/fglrx drivers

sudo sh /usr/share/ati/fglrx-uninstall.sh

sudo apt-get remove --purge fglrx fglrx_* fglrx-amdcccle* fglrx-dev*

Than try installing your drivers manually by following steps mentioned here.