*** This bug is a duplicate of bug 1727356 *** https://bugs.launchpad.net/bugs/1727356
It sounds like you're referring to: [ 22.774658] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 23.870619] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 24.280905] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 24.281048] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 25.216644] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 26.474633] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 27.720650] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun So this would be a kernel bug. However in my experience such kernel errors are also not fatal and won't cause permanent graphics problems. Looking at your CPU model however: Core(TM)2 Duo CPU E8500 I can tell you are experiencing bug 1727356, which is not related to kernel errors at all. ** This bug has been marked a duplicate of bug 1727356 Wayland sessions (including the login screen itself) don't start up on older Intel GPUs (pre-Sandy Bridge) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1780077 Title: FIFO underrun error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1780077/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp