[Bug 25992] ATI Radeon 7000 video card cannot display some DVI modes

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Jan 12 00:01:00 PST 2010


--- Comment #3 from cooper <cooper.yuan at amd.com>  2010-01-12 00:00:59 PST ---
(In reply to comment #2)
> Argh.  fixed properly in 6a363f68415d37c302151581f2a86855dba39b67.

Because this patch eliminates the mode which has a high pixel clock, probably
it can't meet Rod's requirement. 

Actually Rod wants to use reduced timing while mode is 1600x1200. 

Before, I clamped the pixel clock to 135Mhz in mode probe function, and this
patch will decrease the refresh rate because pixel clock gets lower, for
instance, 1600x1200 at 60Hz, pixel clock is 162M, when fresh rate is 50.9Hz, the
pixel clock get 135Mhz, but this fresh rate (50.9Hz) may not be supported by
all monitors, although a handy DELL monitor can support it.

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