Summary seems wrong now. It's not about the TV-out blanking, it's the external VGA. As suggested, I wrote up xorg.conf to specifically ignore the tv-out, and it suddenly behaves properly.
Option "monitor-TV" "TV" # in the video device section, plus:
Section "Monitor" Identifier "TV" Option "Ignore" "True" EndSection
Obviously this isn't ideal, because I do have a tv-out, and I'd like it to work too (haven't tested it at all)
Summary seems wrong now. It's not about the TV-out blanking, it's the external VGA. As suggested, I wrote up xorg.conf to specifically ignore the tv-out, and it suddenly behaves properly.
Option "monitor-TV" "TV" # in the video device section, plus:
Section "Monitor"
Identifier "TV"
Option "Ignore" "True"
EndSection
Obviously this isn't ideal, because I do have a tv-out, and I'd like it to work too (haven't tested it at all)