problem with dual video

if I plug my TV in using my HDMI cable, before Mageia is booted, it getś to the boot loader, getś a little further on, then thereś no signal for either displays.
If I boot up with just my moniter plugged in, everything is fine, I plug in the HDMI when Mageia is fully booted and it works fine.
Just annoying I have to keep unplugging and plugging my TV.
If I boot up with just my moniter plugged in, everything is fine, I plug in the HDMI when Mageia is fully booted and it works fine.
Just annoying I have to keep unplugging and plugging my TV.