# Rivafb colors all messed up with 2.5.20-dj2.

- From: Miles Lane \<hidden\>
- Date: 2002-06-05 07:27:23 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2002/06/13450171
- Thread: https://ratatoskr.run/linux-fbdev/2002/06/13450171/t.md

```text
For a long time, I have had messed up colors when I use rivafb.
In the past, just the penguin logo has been obviously messed up
(all purple).  Now, all the colors are off.  By running
"fbset -a 1600x1200-76" I am able to get the framebuffer colors
correctly set.  Also, running this command gives me the desired refresh rate.  I suspect I am using an incorrect
boot parameter value.  Can someone tell me what value to use
to get 1600x1200 @ 76Hz and 16-bit color?

From the kernel log:

rivafb: RIVA MTRR set to ON
Console: switching to colour frame buffer device 200x75
rivafb: PCI nVidia NV10 framebuffer ver 0.9.3 (GeForce-DDR, 32MB @ 0xE8000000)

"lspci -v" gives:

01:05.0 VGA compatible controller: nVidia Corporation GeForce 256 DDR (rev 10) (prog-if 00 [VGA])
	Subsystem: VISIONTEK: Unknown device 000b
	Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 11
	Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
	Memory at e8000000 (32-bit, prefetchable) [size=128M]
	Expansion ROM at feaf0000 [disabled] [size=64K]
	Capabilities: [60] Power Management version 1
	Capabilities: [44] AGP version 2.0

My append= line includes "video=riva:1600x1200-16"

fbset -a (initial state at boot time with whacked colors):

mode "1600x1200-60"
    # D: 162.022 MHz, H: 75.010 kHz, V: 60.008 Hz
    geometry 1600 1200 1600 1200 16
    timings 6172 304 64 46 1 192 3
    hsync high
    vsync high
    accel true
    rgba 5/11,6/5,5/0,0/0
endmode

After running "fbset -a 1600x1200-76" (command gives desired state)
I have:

mode "1600x1200-76"
    # D: 197.981 MHz, H: 95.183 kHz, V: 76.146 Hz
    geometry 1600 1200 1600 1200 8
    timings 5051 304 40 42 3 136 5
    accel true
    rgba 8/0,8/0,8/0,0/0
endmode



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```