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Re: PowerBook G4 12": nVidia GeForce 420 Go sure is a problem

On Thu, 2003-02-06 at 08:39, Orion Buckminster Montoya wrote:
> I've got Sid booting on a new PBG4 12".  The Airport Extreme card
> isn't working yet, but I didn't expect it to.  My current priority is
> getting X working with the NVidia GeForce4 420 Go.  Right now booting
> with video=ofonly when I run startx I just get vertical lines in two
> shades of pink, or sometimes blue or green.

Great !

Plase, send me some infos about the HW ! That is:

 - tarball of /proc/device-tree
 - lspci -vv ourput (as root)
 - dmesg output

Thanks !

> I've been futzing around with the kernel (2.4.20-ben5) with and
> without the Riva driver, and dpkg-reconfiguring xserver-xfree86 with
> and without the nv module, but I've mostly succeeded in getting it to
> fail in less spectacular ways.  I'm googling around for information on
> kernel/x drivers for GeForces but am finding mostly things from 2001
> or early 2002, so I'm not sure what the current state of things is.
> I'm wondering whether anyone has any experience or ideas.  I've found
> Ani Joshi's experimental driver and kernel at
> http://ftp.yellowdoglinux.com/pub/yellowdog/users/ajoshi/ but the
> kernel can't boot because it can't talk to the IDE controller, and the
> nv_drv XFree module there is less successful than the one that Sid has
> installed.

Ok, try this one: http://penguinppc.org/~daniels/README, and for now,
use it with NoAccel until I'm done ironing out some problems with Mark.
So far, the above version (based on XFree CVS "nv" driver) appear to
work fine on GeForce4MX based macs and on a GeForceIIMX I have in my
dual G4, though it doesn't quite work with the eMac's one yet.

> As for the rest of the machine, pmud or apm emulation don't seem to be
> working, and I'm not sure which IDE chipset this model uses (it's
> ATA-100) so I just have all of the IDE drivers compiled in (the HD is
> /dev/hdc).

Sleep will not work for some time at least :( Segher and I need to
complete an Open Firmware emulator in order to soft-boot the video
chip on wakeup from sleep.
> Oh, one weird thing is that /proc/cpuinfo says that the clock speed is
> 533MHz, when I am hopeful (!) that it's 867.

It's probably a dual speed machine, I suspect you can switch it's speed
via the cpufreq interface. Those machines usually boot at low speed.
Check the actual speed by looking at BogoMips ;)

> But it's a nice machine, if a little warm.  If I could get X working I
> could switch to it full time.
> O.
Benjamin Herrenschmidt <benh@kernel.crashing.org>

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