On Mon, Sep 19, 2016 at 11:13 AM, Herminio Hernandez, Jr.
<herminio.hernande...@gmail.com> wrote:
> Apologies for the previous email.
> What I was trying to say was I just recently installed Debain on my PowerMac
> G5. I upgraded to sid and install the nonfree firmware. After reboot I
> noticed that GPU acclleration was broken and I recieved the following error
> [   10.428542] [drm] Loading R300 Microcode
> [   10.486631] radeon 0000:f0:10.0: firmware: direct-loading firmware
> radeon/R300_cp.bin
> [   10.486865] [drm] radeon: ring at 0x0000000000010000
> [   10.634417] [drm:.r100_ring_test [radeon]] *ERROR* radeon: ring test
> failed (scratch(0x15E4)=0xCAFEDEAD)
> [   10.634526] [drm:.r100_cp_init [radeon]] *ERROR* radeon: cp isn't working
> [   11.935061] [drm] Forcing AGP to PCI mode

Well that is really odd. I am trying hard to push my pci patch upstream:


I do believe PCI mode always work, so I would be interested if you
could report the bug upstream to have PCI mode work on all Powermac
(AGP is know to be broken).

Pay attention to your /etc/modules file check whether or not it
contains a option for the loaded modules, eg:


Finally your dmesg looks odd since the line `[drm] Forcing AGP to PCI
mode` comes only after the first error.


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