[Linux-fbdev-users] vesafb+NV18 : vga=771 was the sole resolution supported

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os:gentoo linux

kernel:2.6.8.1

cpu:athlon xp 1800+

The vesafb suceeded in loading framebuffer in vga=771,but failed even in vga=773.

I need a 1024x768 resolution with framebuffer.Is there the way to change the

vesafb driver to fit my video card?



$ dmesg |grep vesa

vesafb: probe of vesafb0 failed with error -6



And hereis ddcprobe\'s output: 



VESA 3.0 detected.

OEM Name: NVIDIA

Vendor Name: NVIDIA Corporation

Product Name: NV18 Board

Product Revision: Chip Rev A2

Memory installed = 1024 * 64k blocks = 65536kb

Supported standard modes:

	640x400x256

	640x480x256

	800x600x16

	800x600x256

	1024x768x16

	1024x768x256

	1280x1024x16

	1280x1024x256

	80x60 (text)

	132x25 (text)

	132x43 (text)

	132x50 (text)

	132x60 (text)

	320x200x64k

	320x200x16m

	640x480x64k

	640x480x16m

	800x600x64k

	800x600x16m

	1024x768x64k

	1024x768x16m

	1280x1024x64k

	1280x1024x16m

EDID ver. 1 rev. 3.

Manufacturer: SAM

ID: 0022

EISA ID: SAM0022

Serial number: 414e3137.

Manufactured in week 1 of 2003.

Input signal type: analog signal.

Screen size max 32 cm horizontal, 24 cm vertical.

Gamma: 1.820000.

DPMS flags: RGB, active off, no suspend, no standby.

Established timings:

	640x480 @ 60 Hz (VGA)

	640x480 @ 75 Hz (VESA)

	800x600 @ 60 Hz (VESA)

Standard timing 0: 60 Hz, 640x480

Standard timing 1: 85 Hz, 640x480

Standard timing 2: 85 Hz, 800x600

Standard timing 3: 85 Hz, 1024x768

Standard timing 4: 60 Hz, 1280x1024

Detailed timing 0:

	Pixel clock: 94500000

	Horizontal active time (pixel width): 256

	Horizontal blank time (pixel width): 1120

	Vertical active time (pixel height): 0

	Vertical blank time (pixel height): 808

	Horizontal sync offset: 48

	Horizontal sync pulse width: 96

	Vertical sync offset: 3

	Vertical sync pulse width: 1

	Dimensions: 56x490

Monitor details 1:

	Timing ranges: horizontal = 30 - 71, vertical = 50 - 160

Monitor details 2:

	Name: SyncMaster

Monitor details 3:

	Serial number: HVCW100208



Best regards,

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