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    To be fair, at the point RadeonHD was being...

    To be fair, at the point RadeonHD was being initially implemented, we *didn't* have ATOM working in Radeon. RadeonHD extended the Radeon model to R500 (which was pretty much R300 with a different and...
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    There were certainly personal frictions as well,...

    There were certainly personal frictions as well, but the OP asked about the technical distinctions (I forgot another one - R500 had the same 2D and 3D acceleration hardware as radeons that were...
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    That's broadly right, but it's a bit more nuanced...

    That's broadly right, but it's a bit more nuanced than that - it's kind of tied into a bunch of things.

    1) In the beginning, there was VBE

    The VESA BIOS extensions provided a mechanism for...
  4. Not really. I'm talking about people who are...

    Not really. I'm talking about people who are targetting Linux already, they're just doing so from OS X. They're mostly using the same tools that they'd be using on Linux.
  5. Apple did this entirely correctly, and Intel's...

    Apple did this entirely correctly, and Intel's insistence on using SMM for every other implementation is unjustifiable at a technical level.
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    You start the Windows kernel with kexec in...

    You start the Windows kernel with kexec in exactly the same way that you start the Linux kernel with kexec - load it, generate the appropriate handoff data and jump to the entry point. kexec-tools...
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    This has precisely nothing to do with secure...

    This has precisely nothing to do with secure boot. Michael tried booting a 64-bit Linux distribution on a system with 32-bit firmware. He'd have exactly the same failure if he tried to boot 64-bit...
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    …especially when, it turns out, there's no...

    …especially when, it turns out, there's no support in upstream X or the kernel for this part anyway. Silicon Motion submitted some patches for a framebuffer and X driver, but they all had non-free...
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    Wow. Well, from a practical perspective, there's...

    Wow. Well, from a practical perspective, there's almost no benefit running a native driver instead of vesa on that hardware. It probably does mean that someone's going to have to write a KMS driver,...
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    It has a 32-bit UEFI implementation, and so...

    It has a 32-bit UEFI implementation, and so you'll need a 32-bit UEFI install image. Most distributions don't provide one, because http://mjg59.dreamwidth.org/26734.html
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    Which of them? The only server GPUs I've seen in...

    Which of them? The only server GPUs I've seen in the past few years are G200SE variants, rn50/es1000 and Aspeed - and we have KMS drivers for all of them.
  12. Rootless XMir is a significantly easier project.

    Rootless XMir is a significantly easier project.
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    As confirmed by the XMir developer here:...

    As confirmed by the XMir developer here: https://twitter.com/RAOF_47/status/371117986167263234 . You'll be apologising to Daniel, I guess?
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    What is? The commit Michael references as fixing...

    What is? The commit Michael references as fixing the problem is in the Mir libraries that I'm running.
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    This is still broken as of revision 1007,...

    This is still broken as of revision 1007, presumably because corresponding code needs to land in Xmir.
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    The code in that branch provides infrastructure...

    The code in that branch provides infrastructure for fixing the problem, it doesn't actually fix the problem.
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    What I expect is that if you're encouraging...

    What I expect is that if you're encouraging people to test software, you explicitly warn them about known security issues.
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    Nightly software has a known security flaw that...

    Nightly software has a known security flaw that the distribution didn't make obvious to testers.
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    Care to find one of those that isn't also present...

    Care to find one of those that isn't also present in Ubuntu?
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    The Mir VT switching code is currently done...

    The Mir VT switching code is currently done entirely in Mir. This is wrong, because all other input events are handled by the X server and the X server has expectations that it'll be in charge of VT...
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