Re: rc6 keeps hanging and blanking displays

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On Llu, 2005-08-22 at 16:40 -0700, Linus Torvalds wrote:
> That may be the problem with MGA - I think some gfx cards used the same
> decoder for ROM and for the video RAM aperture, so that you were supposed

MGA requires the ROM can be mapped temporarily in order to read the data
tables. X itself solves this by mapping the ROM over the RAM addresses
assigned by the OS then mapping the RAM back after finishing with the
ROM. Its a fairly standard video card trick.

What X does in the presence of kernel support it recognizes I'm not
however sure.

Alan

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