[Nouveau] [Bug 34554] Nouveau seems to have corrupted my laptop screen's EDID info

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=34554

--- Comment #8 from Francisco Jerez <currojerez at riseup.net> 2011-03-30 08:51:53 PDT ---
(In reply to comment #7)
> TL;DR (short) version:
> 
> I have seen very, very similar symptoms on two Dell (D620, XPS M1710) laptops
> running nouveau since about the same time.  The laptop panels no longer work
> properly in Linux, in BIOS, or in Windows 7, however in one case (D620), proper
> fiddling with the BIOS display select hotkey during POST results in partial
> functionality under certain circumstances.
> 
I wouldn't rule out a manufacturing defect, interestingly both laptops are
mentioned in the nVidia GPU litigation [1].

> Like the OP, I get EDID blocks with an invalid first byte (often 0xa9 or 0xa1)
> and/or invalid leading 0x 00ff ffff ffff ff00 reported in dmesg.
> 
> I think this is the same issue described in #4552.
> 
> Given the amount of my hardware that I believe to have been affected, I am
> hereby offering as a bounty a hardware donation of ~200 USD worth of
> at-least-sort-of relevant hardware of his/her choosing to any developer able to
> resolve this in such a way that my laptop panels start working again, in the
> interest of keeping him/her well stocked with hardware to hack.  If you're up
> to your eyeballs in cards to work on, I'll ship to another hacker of your
> choosing or consider a favorite charity.
> 
Have you considered donating/lending out one of the affected laptops instead?
It looks like physical access and being able to take the laptop apart would
actually be helpful here to diagnose the problem.

>[...]

[1] http://www.nvidiasettlement.com/

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