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

["Michel Dänzer" <michel@daenzer.net>]

[ 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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