2007/1/18, Iain Buchanan <[EMAIL PROTECTED]>:
On Wed, 2007-01-17 at 22:46 +0800, Chuanwen Wu wrote:
> I find my monitor work correctly in the 85Hz(the character is
> vague).And in windows,I set the sync range to 75Hz and then it's OK.
> But how to bring down the sync range to 75Hz in gentoo?
the monitor frequency you see in windows is "VertRefresh" from
xorg.conf. You don't have to specify a range, you can also give a
discrete value.
Thanks!I have tried.But still all the same.Here is a part of my xorg.conf:
HorizSync 30 - 60
VertRefresh 75 - 75
#add by myself
Section "Modes"
Identifier "Modes[0]"
# 1024x768 @ 75.00 Hz (GTF) hsync: 60.15 kHz; pclk: 81.80 MHz
Modeline "1024x768_75.00" 81.80 1024 1080 1192 1360 768 769 772
802 -HSync +Vsync
EndSection
Section "Screen"
Identifier "Screen 1"
Device "** Intel i810 (generic) [i810]"
Monitor "My Monitor"
DefaultDepth 24
Subsection "Display"
Depth 8
Modes "1024x768_75.00"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 16
Modes "1024x768_75.00"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 24
Modes "1024x768_75.00"
ViewPort 0 0
EndSubsection
EndSection
And I used gtf:
#gtf 1024 768 75
# 1024x768 @ 75.00 Hz (GTF) hsync: 60.15 kHz; pclk: 81.80 MHz
Modeline "1024x768_75.00" 81.80 1024 1080 1192 1360 768 769 772
802 -HSync +Vsync
> Now in my xorg.conf:
>
> HorizSync 31.5 - 57.0
> VertRefresh 50-90
>
> Even I change them to 20 - 40(HorizSync) and 30 - 60(VertRefresh),the
> frequency is still 85Hz.
be careful just randomly changing these values - you can sometimes to
bad things to your monitor.
To stop this, X probes your monitor (if it supports EDID) to get the
refresh and sync values it can display, and it won't let you set the
value outside this.
I would troll through /var/log/Xorg.0.log and see if you can see
anything interesting about EDID or sync, etc.
And I also found information in Xorg.0.log:
II) I810(0): Supported VESA Video Modes:
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED] (interlaced)
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): [EMAIL PROTECTED]
(II) I810(0): Manufacturer's mask: 0
(II) I810(0): Supported Future Video Modes:
(II) I810(0): #0: hsize: 800 vsize 600 refresh: 85 vid: 22853
(II) I810(0): #1: hsize: 640 vsize 480 refresh: 85 vid: 22833
(II) I810(0): #2: hsize: 1024 vsize 768 refresh: 85 vid: 22881
(II) I810(0): #3: hsize: 1280 vsize 1024 refresh: 60 vid: 32897
(II) I810(0): Ranges: V min: 50 V max: 130 Hz, H min: 30 H max: 72
kHz, PixClock max 110 MHz
(II) I810(0): Monitor name: 1772ED
(II) I810(0): Serial No: 1249407921234
(II) I810(0): Will use BIOS call 0x5f05 to set refresh rates for CRTs.
(--) I810(0): Maximum space available for video modes: 8000 kByte
(II) I810(0): Using detected DDC timings
(II) I810(0): HorizSync 30-72
(II) I810(0): VertRefresh 50-130
Obviously,the system detected the frequency itself and my setting of
HorizSync and VertRefresh have no effect.
So is there anything wrong with my xorg.conf?How to change it?
--
wcw
--
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