I get a scrambled screen (four blurry miniaturized version of the same display) when I boot in EFI mode (EFI stub).
Please attach the dmesg output.
Created attachment 60959 [details] dmesg EFI mode output
Created attachment 60960 [details] dmesg BIOS mode output
I can provide further debug information if needed.
I'm still willing to help.
Are you using gfxpayload=keep in your grub config? If so does it help if you remove it? Can you also try a 3.8 kernel? Specifically this patch: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=6253e4c75d96006c06b9ac8f417eba873de2497b
I don't use grub (I boot through rEFIt thanks to EFISTUB). I'll try 3.8 ASAP. Thanks.
Sorry, I meant rEFInd.
Tried 3.8.4: no improvements.
Does it work ok with grub?
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