Just use this boot kernel option as below and thing is stable with my machine. Put it here for more information
irqpoll nomodeset nopat Also use XAA is AccelMethod in xorg.conf. -- Xserver crashed after a while https://bugs.launchpad.net/bugs/581567 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
