On Thu, Dec 11, 2008 at 2:17 AM, Joseph Adams <[EMAIL PROTECTED]> wrote: > My Xorg.0.log and output of xrandr (in the absence of an xorg.conf) > can be found at http://www.funsitelots.com/pub/emac_almostthere . > > It looks to me like Xorg is adding default modelines that aren't > appropriate for the internal CRT monitor. Since my LCD monitor > supports 1280x1024 resolution that matches one of the default modes > picked erroneously for the internal CRT monitor, Xorg picks that > resolution and uses it. A 1280x1024 external/1280x960 internal > configuration set up through xrandr does work fine, though.
This is something of an xserver issue. Most multi-sync CRT's can support just about any common mode timings, so the xserver adds them since many users find them useful. Unfortunately the eMac is particularly picky about it's modes on the internal monitor. We may want to add am output flag the driver can use to tell the server not to add the default modes for cases like this. A workaround for the moment would be to add a filter for eMacs to radeon_mode_valid() to deny any modes that will not work on the eMac. Could get tricky though. What's happening is that the xserver is trying to set up the largest clone mode available. it's matching the 1280x1024 preferred mode from the external monitor's edid and adding the default 1280x1024 mode (from the default mode added by the server). unfortunately the internal monitor doesn't like this mode. Alex _______________________________________________ xorg mailing list xorg@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/xorg
