I've got a somewhat aging lcd tv that so far my pi recognises quite nicely, but the pi can't get some display settings that I can get on my PC. I ran /opt/vc/bin/tvservice and noticed the following two lines
HDMI:EDID found unknown detail timing format: 1360x768p hfp:56 hs:136 hbp:192 vfp:3 vs:5 vbp:17 pixel clock:69 MHz
HDMI:EDID found unknown detail timing format: 1360x768p hfp:72 hs:136 hbp:208 vfp:3 vs:5 vbp:22 pixel clock:84 MHz
which correspond to the best resolution on PC. Is there any way to make the pi use these even though they are neither dmt nor cea?