: I have following problem:
: I have an old Olivetti computer as the router. After I upgraded it to 2.4.2
: kernel (RedHat 7.1), the screen always blanks in the moment when it starts
: to write the boot messages. The screen is completely black and no signal on
: Hsync/Vsync on VGA conncetor. So the monitor goes to the sleep mode after a
: while. But the rest of the computer works as usual during this problem.
: Only the video output is disabled.
: The video chip is reported as "Trident 9660" by both X Windows and
: M$ Windoze.
:
: Is this problem known?
Yes. It is the kernel writing to port 0x92 to enable the A20 gate.
Find a kernel that doesnt or edit setup.S.
See also
http://www.win.tue.nl/~aeb/linux/kbd/A20.html
Andries
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