GNOME wrong window scaling on TV
After connecting HTPC via HDMI cable to 42″ LG TV (42LD650), resolution was correctly set to 1920×1080 (HDTV) but screen was recognized as 7″. The result was wrong scaling for windows, fonts and mouse pointer. Luckily, solution is easy and with gsettings command (and logout/login) GNOME 3.10 desktop environment is set to normal in a minute.