I am pretty sure it is the same problem and solution in Saucy. Here is a debdiff for Saucy.
For upstream, I think Cyril's 02- Debian patch is a prerequisite and it hasn't been upstreamed either, so dualview is simply broken upstream. I will (re)post that one together with my one on xorg-devel (soon). There is also a related third patch from Matthieu in December, but that one is not needed for Ubuntu. ** Patch added: "debdif for Saucy" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-mga/+bug/1180986/+attachment/3713904/+files/xserver-xorg-video-mga_1.6.2-0ubuntu2.debdiff -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-mga in Ubuntu. https://bugs.launchpad.net/bugs/1180986 Title: X Segmentation fault with dual-head config on Matrox G45FMDVP32DB /32MB /DVI /VGA Status in The Linux Mint Distribution: New Status in “xserver-xorg-video-mga” package in Ubuntu: Confirmed Bug description: Hello. We're experiencing problems when running X server configured for dual-head with Matrox G45FMDVP32DB. The crash doesn't appear with single screen config. lspci -nn ------------- 02:00.0 VGA compatible controller [0300]: Matrox Electronics Systems Ltd. MGA G400/G450 [102b:0525] (rev 85) Regards, Jaromir. To manage notifications about this bug go to: https://bugs.launchpad.net/linuxmint/+bug/1180986/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp