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Incorrect refresh rate with i915 video on FC4



I'm having a heck of a time getting my display to work properly. I have
an HP Pavilion a730n which has an i915 graphics board running Fedora
Core 4. The display it's hooked up to is a Samsung 770TFT. I run the
display at 1280 x 1024. Under Windows the driver would always revert
back to 60Hz on each reboot, which always makes the display blurry.
However, I could always adjust the refresh rate to 72Hz and everything
was peachy. 

Xorg is a different story. No matter what I do, the display seems to
behave as if it's running at 60Hz but the Gnome Screen Resolution claims
it's running at 76Hz (which is out of range). I've tried creating a
ModeLine which seems to make things a little better, but not great.
Here's the parts of my Xorg config that is relevant:

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "S/M 770TFT"
	DisplaySize  340	270
	HorizSync    30.0 - 81.0
	VertRefresh  56.0 - 85.0
	Option	    "DPMS" 
	ModeLine     "1280x1024"  138.54  1280 1368 1504 1728  1024 1025 1028
1069 -HSync +Vsync
	# 1280x1024 @ 72.00 Hz (GTF) hsync: 76.82 kHz; pclk: 132.75 MHz
  	ModeLine "1280x1024_72.00"  132.75  1280 1368 1504 1728  1024 1025
1028 1067 -HSync +Vsync
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "i810"
	VendorName  "Videocard vendor"
	BoardName   "Intel 915"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1280x1024_72.00" "1280x1024" "1152x864" "1024x768" "800x600"
"640x480"
	EndSubSection
EndSection

I have taken a look at Bug 132276:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=132267

Since this sounded like a similar problem, i tried adding the "NoAccel"
option. All this did was make scrolling really slow, the blurriness was
still present. Any thoughts would be GREATLY appreciated! Thanks!

Ryan-

 


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