I have Gentoo Linux, the Awesome window manager and an open-source ATI driver.Here's my xorg.conf:Section Files        #ModulePath   /usr/lib64/xorg/modules        FontPath     /usr/share/fonts/misc/        FontPath     /usr/share/fonts/TTF/        FontPath     /usr/share/fonts/OTF        FontPath     /usr/share/fonts/Type1/        FontPath     /usr/share/fonts/100dpi/        FontPath     /usr/share/fonts/75dpi/        FontPath     /usr/share/fonts/terminusEndSectionSection ServerLayout  Identifier     My X Server  Screen 0 Screen0 0 0EndSectionSection Monitor        #DisplaySize      510   290     # mm        Identifier   LeftMonitor        VendorName   DEL        ModelName    DELL U2311H        HorizSync    30.0 - 83.0        VertRefresh  56.0 - 76.0        Option      DPMS        Option         PreferredMode  1920x1080EndSectionSection Monitor        #DisplaySize      380   300     # mm        Identifier   RightMonitor        VendorName   SAM        ModelName    SyncMaster        HorizSync    30.0 - 81.0        VertRefresh  56.0 - 75.0        Option      DPMS        Option         PreferredMode  1280x1024EndSectionSection Device  Identifier  Card0  Driver      radeon  VendorName  ATI Technologies Inc  BoardName   Mobilitiy Radeon HD 3600 Series  BusID       PCI:4:0:0  #Option AccelMethod EXA  Option         monitor-HDMI-0 RightMonitor  Option         monitor-DVI-0 LeftMonitorEndSectionSection Screen  Identifier   Screen0  Device       Card0  Monitor      LeftMonitor  DefaultDepth 24  SubSection Display        Depth     24        Modes           1920x1080 1280x1024        Virtual     3200 1080  EndSubSectionEndSectionAnd to enable the monitor on the right side I do xrandr --output HDMI-0 --mode 1280x1024 --right-of DVI-0 at system launch.Good thing, it works.Bad thing, Altitude game breaks it. The main (left) monitor loses signal and I can't re-enable it ( while the game itself runs happily on the right screen, in fullscreen mode).No problems in windowed mode (1024x768), as well as with all other applications (fullscreen flash, VLC, etc), but when I try to change in-game resolution to 1280x1024, it breaks the same way as with fullscreen.Any ideas?Edit: It breaks when I close the game as well. Argh!Edit2: Probably related to this bug.Edit3: Investigating this strange behavior with the guys from Nimbly Games (creators of Altitude). They actually fixed the problem at game exit, so I can at least play in windowed mode now.As for fullscreen mode, I think it's a problem somewhere in xrandr, or unstable open-source radeon R600 drivers, so that Awesome (window manager) actually restarts when Altitude goes to fullscreen mode/tries to change resolution.
Fullscreen game messes with my xrandr dual-monitor setup
drivers;window manager;xrandr;tiling wm