Radeon HD 5450 on PowerMac G5

Alex Deucher alexdeucher at gmail.com
Wed May 30 06:24:20 PDT 2012

On Wed, May 30, 2012 at 8:16 AM, Stephane Louise
<stephane.r.louise at gmail.com> wrote:
> Hi,
> 2012/5/30 Alex Deucher <alexdeucher at gmail.com>:
>> Did you try with radeon.hw_i2c=1 or without?  You shouldn't get any
>> difference in behavior without that option since it uses the same code
>> paths as earlier kernels.
> Yes, with. I checked also the module parameters:
> $ cat /sys/module/radeon/parameters/hw_i2c
> 1
>> I dunno.  Nothing sticks out as problematic.  Others have used the
>> driver on ppc without problems.  Maybe Ben or Michel have some ideas.
> The Quad-G5 is the only PPC with PCI-e. I guess it was Michel that
> advised me to try and post here.
> But may be there are better insights now ?

It may be the only mac with pcie, but there are a number of other ppc
boards with pcie.  The edid problems are strange, as it's just
bit-banging i2c.  Are you running any special patches?


> Thanks for trying anyway.
> Regards.
> Stéphane Louise

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