@Natalia Morandeira you need to open a terminal (keep ctrl and alt pressed then press T) then you need to copy the following lines (ignoring lines starting with # which are my comments) one by one to the terminal (right click anywhere inside the terminal and select paste)
# command to become root (the super user of linux) sudo su # commands to enable precise-proposed software updates # COPY THIS BLOCK OF COMMANDS ALL IN ONCE ! grep precise-proposed /etc/apt/sources.list && echo "deb http://archive.ubuntu.com/ubuntu/ precise-proposed restricted main multiverse universe" >> /etc/apt/sources.list echo "" > /etc/apt/preferences echo "Package: *" >> /etc/apt/preferences echo "Pin: release a=precise-security" >> /etc/apt/preferences echo "Pin-Priority: 990" >> /etc/apt/preferences echo "" >> /etc/apt/preferences echo "Package: *" >> /etc/apt/preferences echo "Pin: release a=precise-updates" >> /etc/apt/preferences echo "Pin-Priority: 900" >> /etc/apt/preferences echo "" >> /etc/apt/preferences echo "Package: *" >> /etc/apt/preferences echo "Pin: release a=precise-proposed" >> /etc/apt/preferences echo "Pin-Priority: 400" >> /etc/apt/preferences # wait a little for this command to update the system apt-get update # install linux kernel 3.5.0-28 from precise-proposed (also wait for it) # THIS IS ALL IN ONE LINE apt-get install linux-image-3.5.0-28-generic/precise-proposed linux-headers-3.5.0-28-generic/precise-proposed linux-headers-3.5.0-28/precise-proposed # now reboot your PC # see https://wiki.ubuntu.com/Testing/EnableProposed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1140716 Title: [regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs on Sandybridge To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1140716/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs