[Bug 108462] two external screens permanently go blank on HP EliteBook Folio G1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108462

--- Comment #35 from Karthik B S <karthik.b.s at intel.com> ---
Hi,

We have logs only for some 20s, looks like the buffer is getting overwritten.
So I'm not getting the function call I wanted. 
Assuming that the error occurred at some point, I'm looking for
"intel_cpu_fifo_underrun_irq_handler" and the commit just before this, causing
the underrun.
I tried to debug regardless, but it is a very difficult to find the commit
causing this issue considering that there are 500 odd commits in the trace.

Can you please try having a script running in background to keep dumping the
trace to a log file(or may be different files if there's too much logs)
just to ensure we're not missing any trace and with this we'll try to catch the
function call for fifo underrun.

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