[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

Lakshmi <lakshminarayana.vudum at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |major

--- Comment #80 from Lakshmi <lakshminarayana.vudum at intel.com> ---
(In reply to Johannes Berg from comment #79)
> Created attachment 145242 [details]
> requested dmesg from new drm-tip commit
> 244c5c8116c0042d61455697a9d85e899e2d9267
> 
> This is from drm-tip 244c5c8116c0042d61455697a9d85e899e2d9267 that I
> compiled the other day, sorry for the delay.
> 
> Nothing really stands out in the log though.
> 
> Remember this is now with the second external display turned off, as gdm3
> disabled both external displays on this kernel and only one came back after
> logging in - nothing really is shown though in the log pertaining to this.

Thanks. I can see underruns from the logs. *ERROR* CPU pipe B FIFO underrun.
Can you please attach the same logs with kernel parameters drm.debug=0x1e
log_buf_len=4M. This will show more information about he issue.

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