I have been experiencing this kind of problem (with
intel_cpu_fifo_underrun_irq_handler in syslog) for a couple of weeks now
on Ubuntu 17.10 (4.13.0-39-generic). Here's the syslog extract:

    May  9 13:18:57 xx zeitgeist-datah[2322]: recent-manager-provider.vala:106: 
(null) was not registered in RecentInfo item 0x55b07472c020
    May  9 13:19:58 xx kernel: [834627.678287] 
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO 
underrun
    May  9 13:19:58 xx /usr/lib/gdm3/gdm-x-session[1843]: (II) modeset(0): EDID 
vendor "FUS", prod id 1957
    May  9 13:19:58 xx /usr/lib/gdm3/gdm-x-session[1843]: (II) modeset(0): 
Using hsync ranges from config file
    May  9 13:19:58 xx /usr/lib/gdm3/gdm-x-session[1843]: (II) modeset(0): 
Using vrefresh ranges from config file
    May  9 13:19:58 xx /usr/lib/gdm3/gdm-x-session[1843]: (II) modeset(0): 
Printing DDC gathered Modelines:
    May  9 13:19:58 xx /usr/lib/gdm3/gdm-x-session[1843]: (II) modeset(0): 
Modeline "1920x1080"x0.0  148.50  1920 2008 2052 2200  1080 1089 1095 1125 
+hsync +vsync (67.5 kHz eP)
    May  9 13:19:58 sanchopansa09 /usr/lib/gdm3/gdm-x-session[1843]: (II) 
modeset(0): Modeline "800x600"x0.0   40.00  800 840 968 1056  600 601 605 628 
+hsync +vsync (37.9 kHz e)

Mostly the secondary screen goes (and stays) black when this happens,
sometimes the primary notebook (Lenovo) screen. Interestingly, the
secondary screen usually comes back when I open “change background” from
the context menu (on the primary screen). I need not actually change the
background, just open “change background.”

Often when the screen starts flickering and goes black there is the
sound of really heavy disk activity, maybe more than justifiable by sys-
logging.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1550779

Title:
  [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779/+subscriptions

-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to