framebuffer question


 
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Old 02-11-2008
framebuffer question

I am having a hard time getting the framebuffer configured for the correct resolution. The card is a XVR-1200 and it is (or should be) linked to (do not know if that is the correct term) jfb0a & b. When I run fbconfig on /dev/fbs/jfb0a and ask for a list of resolutions, they all come back with [1] after them, indicating that the card does not support the resolution. I have also tried jfb0 and jfb0b with the same results.

when I run fbconfig -prtconf I get back a printout containing the following:
/dev/fb/ ---
It lists the proper grafics card xvr-1200.

any help is greatly appreciated
 
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FBDEV(4)						     Kernel Interfaces Manual							  FBDEV(4)

NAME
fbdev - video driver for framebuffer device SYNOPSIS
Section "Device" Identifier "devname" Driver "fbdev" BusID "pci:bus:dev:func" ... EndSection DESCRIPTION
fbdev is an XFree86 driver for framebuffer devices. This is a non-accelerated driver, the following framebuffer depths are supported: 8, 15, 16, 24. All visual types are supported for depth 8, and TrueColor visual is supported for the other depths. Multi-head configurations are supported. SUPPORTED HARDWARE
The fbdev driver supports all hardware where a framebuffer driver is available. fbdev uses the os-specific submodule fbdevhw(4) to talk to the kernel device driver. Currently a fbdevhw module is available for linux. CONFIGURATION DETAILS
Please refer to XF86Config(5) for general configuration details. This section only covers configuration details specific to this driver. For this driver it is not required to specify modes in the screen section of the config file. The fbdev driver can pick up the currently used video mode from the framebuffer driver and will use it if there are no video modes configured. For PCI boards you might have to add a BusID line to the Device section. See above for a sample line. You can use "XFree86 -scanpci" to figure out the correct values. The following driver Options are supported: Option "fbdev" "string" The framebuffer device to use. Default: /dev/fb0. Option "ShadowFB" "boolean" Enable or disable use of the shadow framebuffer layer. Default: on. Option "Rotate" "string" Enable rotation of the display. The supported values are "CW" (clockwise, 90 degrees), "UD" (upside down, 180 degrees) and "CCW" (counter clockwise, 270 degrees). Implies use of the shadow framebuffer layer. Default: off. SEE ALSO
XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7), fbdevhw(4) AUTHORS
Authors include: Gerd Knorr, Michel Danzer, Geert Uytterhoeven XFree86 Version 4.7.0 FBDEV(4)