[Bug 45968] [RADEON:KMS:RS780:HD3200] l 2560x1440 detected by monitor as 1280x1440, every second pixel missing
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Feb 14 10:04:35 PST 2012
https://bugs.freedesktop.org/show_bug.cgi?id=45968
--- Comment #11 from Roland Scheidegger <sroland at 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 at 48, but 2560x1440 at 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 at 60Hz should be clearly below 340Mhz with reduced blanking (around 250Mhz).
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