https://bugs.freedesktop.org/show_bug.cgi?id=76564
--- Comment #12 from Christian König deathsimple@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.