The beaglebone has a thermal fuse that trips when more than 100ma is drawn by anything plugged into the micro HDMI connector. Most HDMI to VGA converters draw quite a bit more than that. Either use an externally powered converter or replace the 100mA RT1 device found on the beaglebone (just behind the large USB connector) with a higher current device like an RXEF025 or RXEF050 (the will end any hopes you may have for a warranty on the beaglebone but it worked well enough for me.) You could even take out the RT1 device and put a small wire jumper in its place. I also found it was very important to have something like kms_force_mode=video=HDMI-A-1:1024x768@60e in the uEnv.txt file for boot up since a lot of HDMI to VGA converters don't send reliable HDMI information back to the beaglebone. To get it to work in 1280x1024 mode, I had to add an M before the @ to get kms_force_mode=video=HDMI-A-1:1280x1024M@60e
On Tuesday, 7 October 2014 21:23:11 UTC-4, Steve Dieke wrote: > > A newbie here... Just got a new BBB rev C. and am having HDMI issues. I > am able to boot it by after I get into X the monitor (Dell 1907) goes into > powersave mode. I have tried also rebooting w/out the HDMI to VGA > converter plugged in and then plugging in the cable. I get the graphical > display for about 5 seconds and then it goes into power save mode again. > It doesn't appear I can turn this off power save on the monitor, can I do > this on the board itself or other ideas? > > Thanks, > Steve > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
