On Fri, 29 Jul 2011 13:55:35 +0100, Ben Brewer <ben.brewer@xxxxxxxxxxxxxxx> wrote: > I've added a global SSC (Spread Spectrum Clock) parameter to the i915 > driver, since having SSC enabled breaks (distorts) VGA output on some > Core i5/i7 chips (see https://bugs.freedesktop.org/show_bug.cgi?id=38750). > SSC is still enabled by default so the behaviour won't change but > setting the global_use_ssc parameter will turn this feature off and > allow affected devices to function correctly (notably the Dell Vostro > 3300). The question I have is why is SSC enabled on the VGA output at all? I don't see any way VGA could ever tolerate it. -- keith.packard@xxxxxxxxx
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