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uname -a
Linux heroina 3.5.0-19-generic #30-Ubuntu SMP Tue Nov 13 17:49:53 UTC 2012 i686 i686 i686 GNU/Linux
lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Caicos [Radeon HD 6400M/7400M Series]
X -version
X.Org X Server 1.13.0
Release Date: 2012-09-05
X Protocol Version 11, Revision 0
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=linux acpi_backlight=vendor
I followed this workaround https://help.ubuntu.com/community/Binar ... WORKAROUND and did:
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sudo add-apt-repository ppa:andrikos/ppa
sudo apt-get update
sudo apt-get -y upgrade
sudo apt-get --reinstall install xserver-xorg-video-intel
sudo apt-get -y install fglrx-updates fglrx-amdcccle-updates
sudo aticonfig --initial -f