[Bug 45968] [RADEON:KMS:RS780:HD3200] l 2560x1440 detected by monitor as 1280x1440, every second pixel missing

https://bugs.freedesktop.org/show_bug.cgi?id=45968

--- Comment #11 from Roland Scheidegger sroland@vmware.com 2012-02-14 10:04:35 PST --- (In reply to comment #9)

FWIW using HDMI on 3.3-rc I can go up to 2560x1440@48, but 2560x1440@60 is above the 340MHz pixelclock limit for one link.

I'm surprised this old hw supports 340Mhz pixelclock on hdmi, I thought only Tahiti could do that, and monitors wouldn't support it neither typically (though I know some hw tolerates overclocking tmds quite well). In any case 2560x1440@60Hz should be clearly below 340Mhz with reduced blanking (around 250Mhz).