Re: [Xpert]PPC -- XFree86 (ati) support for 1280x854-16 with Radeon Mobility M7 LW (new Apple Titanium)?

[ CC: to linux-fbdev-devel as this should also cover some of your
questions there ]

On Tue, 2002-08-06 at 09:13, Miles Lane wrote:

What's the status with XFree86 support for the new
800MHz Titanium PowerBook?  Every time I have tried
to start the XFree86 HEAD ati driver, it locks up
my machine.

I have tried starting the server at 8bpp, disabling
accelleration and forcing PCIMode.  

XFree86 -configure gave me the following (commented out
lines removed):

Section "Device"
	Identifier  "Card0"
	Driver      "ati"
	VendorName  "ATI Technologies Inc"
	BoardName   "Radeon Mobility M7 LW"
	BusID       "PCI:0:16:0"
EndSection

dmesg (SuSE 2.4.16-npmac kernel):

radeonfb: ref_clk=2700, ref_div=12, xclk=36675 from OF
radeonfb: Failed to detect DFP panel size
Using unsupported 1280x854 ATY,Crown_A at bc008000, depth=8, pitch=1280
Console: switching to colour frame buffer device 160x53
fb0: Open Firmware frame buffer device on
/pci@f0000000/ATY,CrownParent@10/ATY,Crown_A
no framebuffer address found for
/pci@f0000000/ATY,CrownParent@10/ATY,Crown_B

You need a newer kernel.

fbset:

mode "1280x854-85"
    # D: 100.000 MHz, H: 75.758 kHz, V: 84.740 Hz
    geometry 1280 854 1280 854 8
    timings 10000 16 16 16 16 8 8
    rgba 8/0,8/0,8/0,0/0
endmode

This is from OFfb and thus bogus.

Should the radeonfb driver enable the XFree86 fbdev driver 
to operate at 16 bpp?  Where can I get the latest/best 
radeonfb code?

Recent benh kernel or at least 2.4.18.

What are the pros and cons of using fbdev verses the XFree86 ati driver?

All cons, no pros really.

The 4.2.0 or later ati/radeon driver should work with Option "UseFBDev"
if you're running radeonfb. You'll have to provide a 1280x854 mode
definition (fbset -x). If you want DRI, you need to get the current DRI
CVS.


-- 
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast



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