[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 #88 from Shmerl <shtetldik at gmail.com> ---
Just updated to latest UEFI firmware for my Dell Latitude 7490. The problem is
still preset. Just got such error in dmesg (this time there is an additional
detail about DisplayPort payload):

  877.679147] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
B FIFO underrun
[  885.611061] [drm:intel_mst_enable_dp [i915]] *ERROR* Timed out waiting for
ACT sent
[  901.774749] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to get
link status
[  907.540929] [drm:intel_mst_disable_dp [i915]] *ERROR* failed to update
payload -22

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