Inverted video colors using GXT4500 on an IBM RS6000

trigggl

Does anyone know why the colors are inverted in X on the GXT4500 card on an IBM. It doesn't invert in non X terminals only the gui.

It actually looks OK other than having the wrong colors. It does offset to the left a little, but does that all the time. I don't know if these things can be fixed in the xorg.conf file or not.

I'm typing this from firefox in a generic X window. I do need to adjust the resolution for my flat screen.

I've messed around long enough. It's time to get the gui going on one of these things and get rid of the others.
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Greg

eccerr0r · Posted: Mon May 19, 2008 7:41 pm Post subject:

What do you mean 'inverted'?

Does your monitor have discrete RGB signals, and if so, are the wires hooked up correctly? One possible thing is that the red/blue signals are swapped, white and green text would show up fine but blue/red would be really out of whack...
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching?

trigggl · Posted: Mon May 19, 2008 8:05 pm Post subject:

It does appear to be a red and blue swap. Green seems to be normal. The video card is currently using a dvi connection with an adapter to a vga input to the monitor. My PC is using the dvi input. I think I was having the same problem when I did actually have it connected to the dvi input of the monitor.
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Greg

corsair · Posted: Mon Jun 02, 2008 4:15 pm Post subject:

try adding

trigggl · Posted: Mon Jun 02, 2008 4:28 pm Post subject:

corsair · Posted: Wed Jun 04, 2008 7:41 pm Post subject:

no, fbdev should "just work". I think you have found another bug... :-/

sethstorm · n00b Joined: 07 May 2005 Posts: 3

Update: I've reported this on gentoo's bugzilla

Are you running Xorg 7.2 from the 2008.0 beta? I've had the same issue and toggling UseFBDev had no effect.

Possible solution:
It seems to be solvable by a direct swap of the libfbdevhw.so file in /usr/lib/xorg/modules/linux/ from xorg 7.1. If you can go back to 7.1, it should work - just see if you can build just that driver from 7.1, copying the generated libfbdevhw.so.

Copying over libfbdevhw from another (identical) system would do the job, but it's more of a quick fix.

As for your flatpanel:
If it's a 1680x1050 flatpanel, you might have some luck in 7.2 with this snippet for /etc/fb.modes:

trigggl · Posted: Sun Aug 03, 2008 1:52 pm Post subject:

I tried the xorg.conf file. It still didn't work. Perhaps it's because I'm connecting with a vga adapter?

The DVI is being taken by the PC.
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Greg

trigggl · Posted: Mon Sep 15, 2008 12:24 am Post subject:

I played around with the settings listed in sethstorms's xorg.conf file. I did finally get 1680x1050 working, but I still have the wrong colors. I guess I'll keep testing different settings and maybe different versions of xorg until I get the right ones.
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Greg

trigggl · Posted: Sun Oct 26, 2008 1:20 pm Post subject:

I finally got X to start up in 1680x1050. I guess each monitor has its own special settings. Here are the lines I put on xorg.conf to get it to work.