I have the same problem. Xrandr detect the HDMI connection but the monitor has no signal.
on 12/30/2013 – Made popular on 12/30/2013
Thanks for your reply. Both the VGA and the HDMI are integrated into the mobo. It's weird that xrandr detects them both, but the hdmi guy won't wake up. I'm gonna check if there's anything in the bios that helps in case it's hardware config at that level.
Hallo guys, I run a desktop with an ASUS motherboard and an ATI video card.I have two monitors, the first is connected by DVI and is properly workling, the second accepts DVI or VGA, then I used a VGA-HDMI adapter to plug it into the HDMI port of my graphic card.But the monitor is not recogized and is in stand-by, waiting for a signal.I connected the same monitor+vga+hdmi connector to my VAIO lapt
See also this thread in the Newbie forums which might be related:https://bbs.archlinux.org/viewtopic.php?id=171298(As a suggestion: Maybe try the LTS kernel?)Also:https://bbs.archlinux.org/viewtopic.php?id=171244
Does xrandr show the second monitor? If it doesn't, it might be tricky to get it working. If it does show it, it's probably just a matter of setting up your xorg.conf correctly. You can play around with xrandr settings until you find some that work.