hi there ,,, I use dual boot on my laptop vista and fedora 8, in vista refresh rate 60Hertz and in Fedora refresh rate is 50 Hertz, is it problem?
or can it damage my monitor?
in fedora it my monitor choose default so I want to configure it, what should I named Acer Monitor or where I can found the type of Acer Laptop Monitor?

The maximum refresh rate for a LCD monitor is about 60 HZ
Although I do not use laptop my monitor is ACER LCD FEdora 8 do configuring
automaticly and warns my when the input is not supported and set to 60 HZ

In the option control center > display it is possible to change the
settings


all the best

I've installed SlamD64 (64 bit Slackware clone) on my Acer Aspire 5520,
and according to the EDID (info from the monitor itself) it supports a
refresh rate of 60 Hz *ONLY*--not above OR below! I think I've seen this
in other LCD flat panels as well. So be sure X is set to drive at that
rate only.

But now my problem, which may be related to horizontal refresh: back when
the machine had vista on it, I could scale down to 640x480 for gaming
and it would still scale and look ok (other than some blurriness). But
under X, no matter how hard I try, I can't get it to scale right: the
aspect ratio of the image still seems to be 4x3 (the monitor is 1280x800
so 16x10) and the bottom of the image goes off the bottom of the screen.

The laptop uses NVidia integrated graphics (GeForce 7000M + nForce 610M),
so I have the latest NVidia proprietary drivers running on X, which
otherwise works perfectly, but whether by "nvidia-settings",
"nvidia-config", "xorgcfg", or some manual twiddling, I can't get this
thing to display lower than 800x600 properly. The only thing I haven't
tried (because I remember the nightmare it used to be years ago before
EDID support got included) is try to manually write mode lines.

The EDID dump is very basic, only referring to the panel's native
resolution: 71.xx MHz pixel clock, 60 Hz vertical, 7x.xx KHz horizontal
(xx because I'm going from my own lousy memory here), and the panel
doesn't appear to do any scaling on its own, leaving it all up to the
graphics card.

Only one possible hint have I had so far: nvidia-settings says that at
640x480 its engaging in "doublescan". I'm assuming that means drawing 2
horizontal lines to the display for every single actual line in memory--
but could that be the reason why this is happening?

I've got one other idea: there used to be an X option (or maybe it just
did it) that when you did "X -configure" (or maybe "X -probeonly") it
would dump a whole bunch of VESA modelines out to xorg.conf (this may
have been back in the xfree86 days). Is there a way to do this now?
Is there a better tool to twiddle with mode lines than xvidtune?

Thanks, Mike