2. XF86Config options

Several options are supported in the "Device" section for the Mach32 X server. Most of them should be auto-detected if needed, but a few may need to be deliberately set. For example, the "Clocks" entry should almost certainly be set after first running the server with the -probeonly option, so as to avoid the probe in later runs.

Option "composite"

This option will set the composite sync for monitors that require this.

Option "dac_8_bit"

This option enables 8 bits per RGB value. Note this option does not work with all RAMDACs, and is not considered supported by the Mach32 itself.

Option "ast_mach32"

This option sets some special handling for the AST version of the Mach32 card that comes soldered in to some of their motherboards. This card will lock up without this option.

Option "intel_gx"

This option sets the memory aperture address to the hardwired value for the Intel GX Pro. It is equivalent to setting Membase to 0x78000000.

Option "no_linear"

This option disables the use of the linear mapped framebuffer. This should be auto-detected.

Option "sw_cursor"

This option allows you to use the software cursor instead of the hardware cursor.

MemBase baseaddress

This entry specifies the video memory aperture address. Normally the aperture address is automatically determined, but on some VESA Local Bus systems the address chosen will not work. If the Mach32 X server is dying with a seg. fault, then try setting the aperture address to another location.

Clocks clock ...

This entry gives the clock rates for the server to use.

Ramdac "type"

This entry specifies the RAMDAC type. The following values are valid for type:

• ati68830
• sc11483
• sc11486
• sc11488
• ims_g173
• mu9c4870
• ati68875*
• bt885
• tlc34075*
• bt476
• bt478
• inmos176
• inmos178
• bt481*
• bt482
• ims_g174
• mu9c1880
• mu9c4910
• sc15025
• sc15026
• att20c490*
• ati68860
• stg1700
• sc15021
• stg1702
• att21c498

Only the ones marked with [*] have an effect yet.