XFree86 has some problems getting the clock selection right with some ET4000 boards when the server is started from a high-resolution text mode. The clock selection is always correct when the server is started from a standard 80x25 text mode.
This problem is indicated when the reported clocks are different when the
server is started from the high-resolution text mode from what they are
when it is started from the 80x25 text mode. To allow the server to work
correctly from the high-resolution text mode, there are some Option flags
that may be set in XF86Config.
To find out which flags to set, start the
server with the -probeonly flag from an 80x25 text mode and look at the
information printed by the server. If the line:
VGAXXX: ET4000: Initial hibit state: lowis printed, put the following in the SVGA, VGA16 and VGA2 sections of your
XF86Config:
Option "hibit_low"If the line:
VGAXXX: ET4000: Initial hibit state: highis printed, put the following in the SVGA, VGA16 and VGA2 sections of your
XF86Config:
Option "hibit_high"