[Bug 94605] [SKL] Flashing black screen ([drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94605

--- Comment #47 from ggg <grantgrundler at gmail.com> ---
Thought the current i915 driver parameters might be of interest:

/sys/module/i915/parameters# for i in * 
> do
> echo $i : $(cat $i)
> done
disable_display : N
disable_power_well : 1
edp_vswing : 0
enable_cmd_parser : 1
enable_dc : -1
enable_execlists : 1
enable_fbc : -1
enable_guc_submission : N
enable_hangcheck : Y
enable_ips : 1
enable_ppgtt : 3
enable_psr : 0
enable_rc6 : 0
fastboot : N
guc_log_level : -1
invert_brightness : 0
load_detect_test : N
lvds_channel_mode : 0
lvds_use_ssc : -1
mmio_debug : 0
modeset : -1
nuclear_pageflip : N
panel_ignore_lid : 1
prefault_disable : N
preliminary_hw_support : 0
reset : Y
semaphores : -1
use_mmio_flip : 0
vbt_sdvo_panel_type : -1
verbose_state_checks : Y

and while I'm at it, DRM parameters as well:
/sys/module/drm/parameters# for i in * ; do echo $i : $(cat $i); done
debug : 0
edid_fixup : 6
timestamp_monotonic : 1
timestamp_precision_usec : 20
vblankoffdelay : 5000

Lastly, when I hit Ctl-N (open a new browser window) in chrome, I sometimes get
the screen blank. this has happened too often to be coincidence.

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