I have a setup with two video cards (intel HD Graphics 4600 + NVidia GeForce GTX 770) and four monitors (two for each card). I can see all monitors under Windows, but I can see (active, of course) only two under debian (on the same card). I tried several configurations to no avail and finally I gave up :(
Yesterday I discovered another data point: Linuxmint (I tested the "live" distribution) can drive all my monitors, apparently with no configuration at all (no /etc/X11/xorg.conf or similar). LMDE (Linux Mint Debian Edition - essentially the same distribution, but based on Debian instead of Ubuntu) has the same problems of plain debian. I *suspect* problem comes from different options enabled (kernel config?), but I have no idea how to debug such a thing. I did a dump of lspci and lsmod on the working (lm) system and my next move will be to get a similar dump on the non working(debian) setup. Is there anything else I should check? As said: the working system has no explicit xorg configuration. Please help me; I would hate to leave debian world (I was here since the beginnings, coming from slackware to "buzz"). Regards Mauro
