TFT monitor at cgsix

[Norbert Gerhards <n.gerhards@ib-gerhards.de>]

Hi,

I recently switched from an old CRT monitor to
an IBM TFT, running 1024x768 @ 60 Hz.

My machine is a Sun Ultra Enterprise 2 with a
Sun SBus card TG+, found by debian as 'cgsix'.

Although I entered r1024x768@60 in Open BootPROM,
the horizontal frequency is obviously not 60 Hz,
but higher, which results in a very 'unsteady'
screen.

Where and how can I force the 60 Hz to the cgsix
driver?

Thanks in advance,

Norbert

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