Look here to check if your graphics card / chipset is supported. The pages are named like the driver modules and sorted by manufacturer. Hint: see also man <drivername> and /usr/share/doc/.

• 3Dfx
  • tdfx - Voodoo Banshee, Voodoo3,4,5
  • glide - for 2D on Voodoo1 and Voodoo2 cards (uses glide)
  • ?voodoo - for 2D on Voodoo1 and voodoo2 cards (glide not required)
    Maintainer: Alan Cox
• apm - Alliance Promotion chipset (not Advanced Power Managment)
• ATI
  • ati - ATI driver wrapper
  • atimisc - Mach8/32/64
  • r128 - ATI Rage 128
  • radeon - ATI Radeon
    see also ATIProprietaryDriver
  • radeonhd - ATI Radeon X1000, HD1000, HD2000 series
• chips - Chips and Technologies (CT64200,CT64300,CT65520,CT65525,CT65530, CT65535, CT65540, CT65545, CT65546, CT65548, CT65550, CT65554, CT65555, CT69000, CT69030)
  Maintainer: Egbert Eich
• cirrus - Cirrus Logic
• cyrix - Cyrix MediaGX (MediaGX, MediaGXi, MediaGXm)
• fbdev - a Framebuffer device based X server
• geode (formerly amd) - AMD Geode
• glint - 3Dlabs (GLINT, Permedia) and TI (Permedia) chips - details see link.
• i128 - Number Nine I128
  Maintainer: Adam Jackson
• imstt - Integrated Micro Solutions Twin Turbo 128
• Intel
  • i740 - Intel 740 based cards
  • intel (formerly i810) - Intel 8xx/9xx motherboards (i810, i810-dc100, i810e, i815, i830, i845, i855, i865, i915, i945, i965)
    Maintainer: Intel
• mga - Matrox Millennium I/II,Mystique, G100,G200,G400,G450,G550,G550 Dual-DVI
• neomagic - Neomagic chips: MagicGraph 128, 128V, 128ZV, 128ZV+, 128XD, 256AV, 256AV+, 256ZX, 256XL+
  Maintainer: Egbert Eich
• newport - SGI Indy newport cards
• nsc - National Semiconductor
• nv - Nvidia RIVA 128,TNT,TNT2, GeForce, QUADRO, DCC,4, nForce, nForce2
  see also NVIDIAProprietaryDriver and nouveau
• rendition - Rendition (Micron) Verité chip (V1000, V2x00)
• S3
  • s3 - Old S3 Chipsets
  • s3virge - S3 ViRGE series (ViRGE, ViRGE DX,GX,GX2,MX,MX+,VX and Trio3D,Trio3D/2x)
  • savage - S3 Savage series (Savage 3D,4,2000,/MX,/IX, ProSavage PM133,KM133, Twister, TwisterK
• siliconmotion - Silicon Motion, Inc. (SMI) Lynx, Lynx E/3D/EM/EM+/3DM
• sis - SiS 5597/5598, 6326, 530/620, 300/305, 540, 630/730, 315/E/H/PRO, 650/651/M650/740, 661FX/M661FX/M661MX/741, 330 (Xabre), 760; and XGI Volari V3XT, V5, and V8
  Maintainer: Thomas Winischhofer
• SUN
  • sunbw2
  • suncg14
  • suncg3
  • suncg6
  • sunffb
  • sunleo
  • suntcx
• tga - DEC 21030 (TGA)
• trident - Trident Blade, Image, ProVidia, TGUI, ISA/VL families (details see link)
• tseng - Tseng Labs ET4000, ET4000w32, ET6000/6100
• ?v4l - video4linux driver for video overlay, e.g. bt848/bt878-based TV cards
• vesa - Generic VESA video driver
• vga - Standard VGA
• VIA Integrated Graphics
  • via - VIA CLE266/KM400/!?K8M400 video driver
  • openchrome - currently the most complete community based driver for VIA's unichrome[pro] chipsets
  • unichrome - an apparently abandoned community based driver, used as the base to openchrome
  • VIA's own ''via'' driver - now also open source, but lacks 3D and TVout support
• vmware - for running X under VMware
  Maintainer: VMware