[Bug 91891] New: after boot time display swicth off and on one time

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=91891

            Bug ID: 91891
           Summary: after boot time display swicth off and on one time
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.18
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: canapone at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 164481
  --> https://bugzilla.kernel.org/attachment.cgi?id=164481&action=edit
This is the kern.log backtrace

I configure and compile many time the Linux vanilla kernel. synce the first
time i recompile the kernel I get the display go off and soon go on after
logging in my debian. Now, after 3.18 kernel version, i note that syslog put
this error:

[drm:i9xx_check_fifo_underruns] *ERROR* pipe A underrun

I put the backtrace.

My CPU is an Intel U4100 an dual core Cantiga i think.
My graphic card is clearly an Intel Integrated

If I  dmesg |grep vga :
[    0.197091] vgaarb: setting as boot device: PCI:0000:00:02.0
[    0.197091] vgaarb: device added:
PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.197091] vgaarb: loaded
[    0.197091] vgaarb: bridge control possible 0000:00:02.0
[    0.344654] vgaarb: device changed decodes:
PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
.

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