Re: [Linux-fbdev-devel] aty128fb problems on iMac, kernel 2.8.1 (fwd)

[Michal 'h. S. <hra...@ce...>]

On Thu, Sep 23, 2004 at 10:27:34AM +0200, Geert Uytterhoeven wrote:
> 
> 
> ---------- Forwarded message ----------
> Date: Mon, 20 Sep 2004 22:13:36 -0500 (CDT)
> From: Theodore Kilgore <ki...@ba...>
> To: Brad Douglas <br...@ne...>
> Subject: aty128fb problems on iMac, kernel 2.8.1
> 
> Brad,
> 
> Sorry to disturb you, but I cannot seem to find any "live" leads to this
> problem on Google -- all searches seem to lead to old, dead links.
> 
> I have recently decided to learn something about PowerPC architecture, so
> I managed to obtain an old iMac, which has in it the model 750 CPU,
> running at 350mhz.
> 
> I wanted to put both OS-X and Linux on it, with the idea of doing some
> software development on both systems (I do some device support for
> libgphoto2 and also some other USB stuff, in addition to my "day" job as a
> math professor). I am not in a big hurry and being a Slackware lover, I
> decided to try to install Slackintosh.
> 
> Well, after overcoming many obstacles I have been successful in much of
> what I wanted to do, but now it comes to supporting X. Which was compiled
> from source on the machine. But it seems that X needs more than what it
> sees in order to run properly. I can only get 8-bit color, with a few
> problems about artifacts (incidentally, these problems disappear if one
> switches the VT back and forth).
> 
> I gather that the problem is, I do not have any proper kernel module to
> support the framebuffer features of the video chip. So here now is
> the problem I had with this.
> 
> Doing the kernel config, I enable framebuffer support, and I choose the
Also enable console on framebuffer support
> support for the ATI Rage 128, which is the chip in the iMac. It also says
> in lspci that the ATI Rage 128 is an AGP 4x setup, running off the
> uni-north bridge (I wonder if this has anything to do with a framebuffer
> setup? I don't know but I enabled it anyway, as a character device module,
> and also enabled the agp support module).
> 
> So, when I do make modules it says that it compiled the aty128fb module,
> but it gives two error messages:
> 
> mac_find_mode  undefined
> 
> and
> 
> mac_vmode_to_var  undefined.
Does it give the error messages during compilation or during module
loading?
If during module loading, you are probably missing some additional
module.
I had no problem with 2.6.7 kernel but I compiled the ati framebuffer
directly into kernel to get some usable console from the start.
I cannot curruntly say what exact ati chip the iMac has or what was my
kernel config because it is running OS X right now and I am not
physically at the machine.
You should definitely try to compile the aty128fb into kernel to avoid
problems with current fbcons.

If you cannot solve the problem I can look at my config later. It would
run X fine.

Hope this helps

Michal Suchanek