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GPU lockup on Lenovo Thinkpad Edge E130

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http://askubuntu.com – I recently bought a netbook Lenovo Thinkpad Edge E130 (Video card Intel HD Graphics, CPU Intel Pentium B997 ULV) on which I installed Ubuntu 12.10 64 bits. A systematic bug makes it annoying to use the laptop. Regulary, a pop-up shows up, says that the system is bugging. Then, another one, which says: Apport has detected a possible GPU hang. Did your system recently lock up and/or require a hard reboot?" If I read the bug report, it says: [sandybridge-m-gt1] GPU lockup IPEHR: 0x41100000 IPEHR:0x0b140001 If I understand, it affects xserver-xorg-video-intel, but I don't understa (HowTos)