Lubuntu display Xorg service goes to black "Cpu pipe b fifo underrun"

Categories:  Linux, Ubuntu
Labels:  OS, repair

I installed Lubuntu on a DELL Latitude 2110 and, When I log in, it works alright, it runs the lightdm session manager and everything appears to be working alright, except for the display. The display stops in black screen and nothing I can do.
When I press the “Ctrl+Alt+F1” keys combination, quits black screen, however, I can read the kernel message invading my bash prompt:

   [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun


The default method is SNA (as of 2013-08-05), which is less stable, but faster. Review the benchmarks made by Phoronix. UXA is still a solid choice if you experience problems with SNA.
To use the old UXA acceleration method, you must create the /etc/X11/xorg.conf.d/20-intel.conf file with the following content:

It was just a matter of following the recommendation that was given when I installed the video driver xf86-video-intel:

This driver uses SNA as the default acceleration method. You can try
falling back to UXA if you run into trouble. To do so, save a file with
the following content as /etc/X11/xorg.conf.d/20-intel.conf:
 Section "Device"
 Identifier "Intel Graphics"
 Driver "intel"
 Option "AccelMethod" "uxa"
 #Option "AccelMethod" "sna"


  • I had the very same issue until moments ago with a Dell Inspiron 13 7348. Solved with the same method.
  • Thanks man…. you helped me solve the same problem on my Asus Zenbook UX305!!
  • I guess “SNA vs UXA” is the new “Nvidia vs ATI”.
Related Posts:

Social Profiles

Alvistec spanish
Plan Alvistec in Youtube
Privacy policy

This web site uses third's cookies and the Google's cookies to offer services, personalize ads and analyze traffic (Google analytics).
The information on the use of the this web site is shared with Google and another ads provider platforms. When you using this web site, you accept cookies use.
See more about the Cookies

This web accept cryptocoin donations
BTC address, LTC, ETH, Uphold:
Why donations?