| [tlinux-users:04703] |
Need to know LCD Scan Rate
Specs for P15-S409 |
Thu, 08 Jan 2004 |
I noticed that there is no hardware information
for the Pxx Series of
Toshiba Satellite Laptops.I just want to
know the LCD scan rate specifications
for P15 series of laptops (P15-S409, in
particular).
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| [tlinux-users:04704]
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Thu, 08 Jan 2004 |
All LCD screens have vertical refresh 60Hz
(you can use range 50-60).
Horizontal is dependent on resolution and
it is equal to (Yres + 30) * Vf,
where Yres is Y resolution of LCD in pixels
(eg. 768 for 1024x768); 30
is approximately number of scanlines during
vertical retrace and Vf is
vertical frequency (60Hz for LCD). But generally,
it doesn't matter,
because it depend on the vertical freq and
resolution, which is both fixed
on LCD screens.
For example:
On 1024x768 LCD:
(768+30)*60 ~= 800*60 = 48kHz
On 1600x1200 LCD:
(1200+30)*60 ~= 72kHz
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| [tlinux-users:04705]
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Thu, 08 Jan 2004 |
The wide screen 1280x800 should be ~79khz.
Also, shouldn't the 1600x1200 example be
1630*60 = ~98khz?
Since the lack of EDID/DDC capability from
the monitor was causing a problem in
SuSE with the latest Nvidia drivers, the
manual setup is necessary.
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| [tlinux-users:04706] |
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Thu, 08 Jan 2004 |
I've posted this to the list before. Not
done real calculations
but everything is just kludged; I am typing
this on that notebook @
1280x800 (pls see attachment: XF86Config-4).
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