No problem:
vbs@vbs-XS35:~$ grep -a4 "(fbset)" /opt/retropie/supplementary/runcommand/runcommand.sh
# get default fb_res (if not running on X)
fb_orig=""
if [[ -z "$DISPLAY" ]]; then
fb_orig="$(fbset)"
fb_orig="${fb_orig##*mode \"}"
fb_orig="${fb_orig%%\"*}"
fi
Well, I probably clicked that option in the runcommand menu "Select framebuffer Res" but I think I chose "320x240" which was the initially value anyway. But ok, that might be the reason! Thanks!
