Re: 2.6.11-rc3-bk9 (radeon) hangs hard my laptop

Alessandro Suardi
2005-02-13T01:05:30Z

On Sun, 13 Feb 2005 22:12:26 +1100, Benjamin Herrenschmidt
<benh@kernel.crashing.org> wrote:
> On Sun, 2005-02-13 at 01:09 +0100, Alessandro Suardi wrote:
> > On Sun, 13 Feb 2005 21:52:55 +1100, Benjamin Herrenschmidt
> > <benh@kernel.crashing.org> wrote:
> > >
> > > > It's definitely the new radeon changes - replacing
> > > > drivers/video/aty/* and include/video/radeon.h in the
> > > > -bk9 tree with the ones from -bk8 causes the hang to
> > > > not reproduce anymore. CC'd Ben and edited subject
> > > > to more accurately reflect the issue.
> > >
> > > Grrr...
> > >
> > > Can you try booting with radeonfb.default_dynclk=-1 and if it doesn't
> > > help, radeonfb.default_dynclk=0 on the kernel command line ?
> >
> > I'm currently booted with -bk9 with default_dynclk = -1 :)
>
> Excellent. You can help me track it down then. Can you look at
> radeon_pm.c, function
>
> radeon_pm_enable_dynamic_mode()
>
> The code for your chip is after the comment "/* Others */" (the M7 is an
> RV200 chip). Can you comment out the various bits in there and see if
> you can locate which one is causing your problem ?

Commenting out pllCLK_PWRMGT_CNTL alone -> still hangs
Commenting out pllCLK_PIN_CNTL in addition -> works

Do you want me to build a kernel with only the pllCLK_PIN_CNTL
instruction commented out or is this enough info ?

Thanks,