[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 #51 from Shmerl <shtetldik at gmail.com> ---
(In reply to Johannes Berg from comment #49)
> I've been running with the workaround:
> 
> for plane in pri cur spr; do echo 20 500 500 500 500 500 500 500 >
> i915_${plane}_wm_latency ; done
> 
> which makes it not be an issue for me.

What is the correct format for setting those values? That's what I see there
now:

for plane in pri cur spr; do cat
/sys/kernel/debug/dri/0/i915_${plane}_wm_latency; done

WM0 2 (2.0 usec)
WM1 19 (19.0 usec)
WM2 28 (28.0 usec)
WM3 32 (32.0 usec)
WM4 63 (63.0 usec)
WM5 77 (77.0 usec)
WM6 83 (83.0 usec)
WM7 99 (99.0 usec)
WM0 2 (2.0 usec)
WM1 19 (19.0 usec)
WM2 28 (28.0 usec)
WM3 32 (32.0 usec)
WM4 63 (63.0 usec)
WM5 77 (77.0 usec)
WM6 83 (83.0 usec)
WM7 99 (99.0 usec)
WM0 2 (2.0 usec)
WM1 19 (19.0 usec)
WM2 28 (28.0 usec)
WM3 32 (32.0 usec)
WM4 63 (63.0 usec)
WM5 77 (77.0 usec)
WM6 83 (83.0 usec)
WM7 99 (99.0 usec)

That doesn't match the format in your example above.

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