[Bug 90320] Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90320

--- Comment #9 from Samir Ibradžić <sibradzic at gmail.com> ---
Created attachment 115742
  --> https://bugs.freedesktop.org/attachment.cgi?id=115742&action=edit
HB140FH1-401 datasheet

Finally got my hands on some p-coins (damn the neo-capitalist China!) and
fetched the datasheet for my panel (or at least what i think i have inside my
E455 according to EDID, but it seems right as several other Lenovo laptops
comes with the same thing included). The timings looks the same as U38N, it is
definitely 2 2.7Gbps lanes, but I can't claim i understand much besides that
inside the datasheet. Yes, the panel is is full HD 1920x1080, here in Lenovo
Japan it is available as an +$20 option, which was the main reason I bought
this particular machine (besides the fact its AMD APU of course).

I can help debugging any patches or code hacks, so if you have any ideas,
onegaishimasu.

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