Might be usefull to put here a snippet of the boot for the last months kernel versions: nouveau 0000:03:00.0: bus: MMIO read of 00000000 FAULT at 612004 [ IBUS ] nouveau 0000:03:00.0: bus: MMIO read of 00000000 FAULT at 10ac08 [ IBUS ] usb 2-5: New USB device found, idVendor=04ca, idProduct=300b usb 2-5: New USB device strings: Mfr=0, Product=0, SerialNumber=0 fbcon: inteldrmfb (fb0) is primary device clocksource: Switched to clocksource tsc vga_switcheroo: enabled [TTM] Zone kernel: Available graphics memory: 3014696 kiB [TTM] Zone dma32: Available graphics memory: 2097152 kiB [TTM] Initializing pool allocator [TTM] Initializing DMA pool allocator nouveau 0000:03:00.0: DRM: VRAM: 2048 MiB nouveau 0000:03:00.0: DRM: GART: 1048576 MiB nouveau 0000:03:00.0: DRM: Pointer to TMDS table invalid nouveau 0000:03:00.0: DRM: DCB version 4.0 nouveau 0000:03:00.0: DRM: Pointer to flat panel table invalid nouveau 0000:03:00.0: DRM: MM: using COPY for buffer copies [drm] Initialized nouveau 1.3.1 20120801 for 0000:03:00.0 on minor 1 Console: switching to colour frame buffer device 170x48 i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun