BTW, I use Slackware 13.1 and in 13.0 everything was fine. Keep an eye on the libsdl bugzilla cause if I do anything I'll post there.
]]>xgamma -gamma 1.8
b4 tremulous
]]>VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
cat /var/log/Xorg.0.log |grep intel
Identifier "Builtin Default intel Device 0"
Driver "intel"
Identifier "Builtin Default intel Screen 0"
Device "Builtin Default intel Device 0"
Screen "Builtin Default intel Screen 0"
(**) |-->Screen "Builtin Default intel Screen 0" (0)
(**) | |-->Device "Builtin Default intel Device 0"
(==) No monitor specified for screen "Builtin Default intel Screen 0".
(II) LoadModule: "intel"
(II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
(II) Module intel: vendor="X.Org Foundation"
(II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
(II) intel(0): Creating default Display subsection in Screen section
"Builtin Default intel Screen 0" for depth/fbbpp 24/32
(==) intel(0): Depth 24, (--) framebuffer bpp 32
(==) intel(0): RGB weight 888
(==) intel(0): Default visual is TrueColor
(II) intel(0): Integrated Graphics Chipset: Intel(R) 945GM
(--) intel(0): Chipset: "945GM"
(II) intel(0): Output VGA1 has no monitor section
(II) intel(0): Output LVDS1 has no monitor section
(II) intel(0): found backlight control interface /sys/class/backlight/acpi_video0
(II) intel(0): Output TV1 has no monitor section
(II) intel(0): Output VGA1 disconnected
(II) intel(0): Output LVDS1 connected
(II) intel(0): Output TV1 disconnected
(II) intel(0): Using exact sizes for initial modes
(II) intel(0): Output LVDS1 using initial mode 1280x800
(II) intel(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
(==) intel(0): video overlay key set to 0x101fe
(==) intel(0): DPI set to (96, 96)
(II) intel(0): [DRI2] Setup complete
(**) intel(0): Kernel mode setting active, disabling FBC.
(**) intel(0): Framebuffer compression disabled
(**) intel(0): Tiling enabled
(**) intel(0): SwapBuffers wait enabled
(==) intel(0): VideoRam: 262144 KB
(II) intel(0): Attempting memory allocation with tiled buffers.
(II) intel(0): Tiled allocation successful.
(==) intel(0): Backing store disabled
(==) intel(0): Silken mouse enabled
(II) intel(0): Initializing HW Cursor
(II) intel(0): No memory allocations
(II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
(==) intel(0): DPMS enabled
(==) intel(0): Intel XvMC decoder disabled
(II) intel(0): Set up textured video
(II) intel(0): direct rendering: DRI2 Enabled
(II) intel(0): Setting screen physical size to 338 x 211
(II) intel(0): EDID vendor "SEC", prod id 13875
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1280x800"x0.0 68.94 1280 1296 1344 1408 800 801 804 816 -hsync -vsync (49.0 kHz)
(II) intel(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.