Certainly there is bug position which is continuing with my machine and
programe need attention..

On Sat, Mar 2, 2019 at 11:55 AM Shaju കോട്ടയം <email address hidden> wrote:

>
>
> ---------- Forwarded message ---------
> From: 678 <email address hidden>
> Date: Sat, Mar 2, 2019 at 10:11 AM
> Subject: Re: [Bug 1550779] Re: [Lenovo ThinkPad X220] *ERROR* CPU pipe A
> FIFO underrun - Xorg glitches
> To: Bug 1550779 <email address hidden>
>
>
>
> On 02/03/19 12:40 AM, Tom Mittelstaedt wrote:
> > complement (sorry for multiple-comments):
> >
> >
> > $ dmesg | grep i915
> > [    1.439662] i915 0000:00:02.0: vgaarb: changed VGA decodes:
> olddecodes=io+mem,decodes=io+mem:owns=io+mem
> > [    1.439938] [drm] Finished loading DMC firmware
> i915/skl_dmc_ver1_27.bin (v1.27)
> > [    1.443269] [drm] Initialized i915 1.6.0 20180514 for 0000:00:02.0 on
> minor 0
> > [    1.523397] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
> > [   15.764955] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops
> i915_audio_component_bind_ops [i915])
> > [56162.413053] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [59291.355801] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [64022.043888] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [68572.684020] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [84907.749926] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [131695.137832] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [140974.062510] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [152485.446459] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [155522.518586] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [164965.550908] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [165879.406055] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [178549.854547] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [185381.350517] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [187311.834886] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [188858.938318] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [195515.961747] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [195618.444271] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [206235.029303] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [217208.530378] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [222859.639505] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [225820.223051] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [231471.431276] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [239098.879129] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [242398.343295] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [247190.079036] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [247912.015060] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [248846.631100] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> > [258283.737675] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
> CPU pipe A FIFO underrun
> >
> >
> > Of course everything is up to date.
>
> > Yes thank for the observation
>
> <email address hidden>
>
> But may I add and hope you are talking about my system , I am using a
> Dell lap top purchased during 2006 with (bio date not remembered yet
> ,and later the bio date status changed without my knowledge, some time
> back). I am not a tech/ expert ,but experiment with all type linux and
> different flavors of  ubuntu .What I know is bios not reboot
> automatically ,every time i open system, i have to reset bio. The system
> has very severe remote interference and do not have a stable status.
>
> Becasue of my driving experience (ignorant certainly),  I manage some
> how this desktop and run things.:-)
>
>