On Mon, 2011-10-10 at 16:33 -0400, Adam Jackson wrote: > This fixes a rather irritating limitation of active dp->foo converters. > Many such (including all DP->VGA chips I can find on the market) come > equipped with only 2 DP lanes, which clips your dotclock to 144MHz at > 8bpc. Of the standard DMT modes, that means you lose 1600x1200@60 and > above. Since these adaptors are marketed as supporting 1920x1200, we > might as well make that work, otherwise it's the driver that comes > out looking bad.
After the fix in drm-intel-next to fix the DP bandwidth math this series is probably less useful, since 1920x1200 will in fact fit in 2x2.7G: (193250 * 24 + 9) / 10 == 463800 But if you have a Really Very Nice CRT then it might still be desirable. 2048x1536 @ 60Hz GTF for example: (266950 * 24 + 9) / 10 == 640680 (266950 * 18 + 9) / 10 == 480510 I can respin patch 2 if there's still interest, but it might be difficult to find a monitor to test against. Patch 1 is still valid though. - ajax _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
