On 10/14/2012 01:22 PM, Bruno Pr?mont wrote: > Hi Mark, > > On Sun, 14 October 2012 Mark Hounschell <dmarkh at cfl.rr.com> wrote: >> I've taken the EDID data from that service manual. I've looked at the >> EDID-Howto for how to specify the connector but all I see is: >> >> "An EDID data set will only be used for a particular connector, >> if its name and a colon are prepended to the EDID name." >> >> Where can I find the connector names? > > Those are the ones you see under /sys/class/drm/, without the card0- > prefix. > > E.g. on my system I have: > > # ls /sys/class/drm/ > card0 card0-DVI-I-1 card0-LVDS-1 card0-VGA-1 controlD64 version > > Thus I have connectors "DVI-I-1", "LVDS-1" and "VGA-1" (note that your > HDMI connector might not be named HDMI-1, if you are not sure which one > it is, you can look at the files below (edid, enabled, status) which > should help your find the right connector). > Perfect. > > In addition, if you rmmod i915 and modprobe it again connectors will get > increased suffix numbers. So don't expect them to remain the same if you > have multiple GPUs detected in random order or if you rebind them to > their driver. (though except during testing or for special systems you > don't have to worry about this) > >> And could I ask if this simple pgm might work to build the file I need? > > It looks fine. You can also check the output with hexdump just to > make sure it looks sane. Did that and the data looks swapped compared to the array written, but I guess that's normal? > If it's broken kernel will tell you that checksum does not match. > So the check sum is actually already in the data provided by the service manual then. > In any case the (successful) loading of edid should be visible in kernel > log. > I'll be trying this a little later in the day. Thanks again Mark
