[Bug 76564] [AMD Fusion E-350] HDMI refresh rates doesn't match expectations

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76564

--- Comment #12 from Christian König <deathsimple at vodafone.de> ---
(In reply to comment #10)
> (In reply to comment #8)
> > Okay, but doesnt that mean in this case it is a problem with the display
> > (HDMI?) clock, as I am not using HDMI audio?
> > 
> > Is there a way I could get more detailed logging of what is happening on my
> > system?
> 
> I don't know how XBMC calculates the frame rate off hand.  The PLL used to
> generate the display clock may not always match the exact pixel clock of the
> monitor.  The driver calculates pll dividers to get as close as possible to
> the pixel clock of the display mode.  See radeon_compute_pll_avivo() in
> radeon_display.c

Yeah, but on multiple occasions I had the feeling that fglrx might do a better
job on this than the radeon kernel module.

We might want to take a second look at this and try to compare the settings
fglrx and radeon uses for the same mode.

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