<div dir="ltr">I have already applied his patches on my PowerBook running Jessie to get accelerated graphics. However they are only a work around and not a real fix so they will be committed to mesa.</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 5, 2016 at 8:44 AM, Mike <span dir="ltr"><<a href="mailto:michael.heltne@gmail.com" target="_blank">michael.heltne@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Herminio, <div><br></div><div>Ok, take a look at this. <a href="https://github.com/threader/mesa-11.1.1-ppc-r300-debian" target="_blank">https://github.com/threader/mesa-11.1.1-ppc-r300-debian</a> or if on stable maybe this is more fitting <a href="https://github.com/threader/mesa-10.6.3-ppc-r300-debian" target="_blank">https://github.com/threader/mesa-10.6.3-ppc-r300-debian</a> - this only fixes the issue for r300 on powerpc though. </div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On 5 February 2016 at 14:32, Herminio Hernandez Jr. <span dir="ltr"><<a href="mailto:herminio.hernandezjr@gmail.com" target="_blank">herminio.hernandezjr@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>I have been experiencing the same thing with my iBook and PowerBook. <br><br>Sent from my iPhone</div><div><div><div><br>On Feb 4, 2016, at 8:47 PM, Mike <<a href="mailto:michael.heltne@gmail.com" target="_blank">michael.heltne@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><div class="gmail_extra">Hi. </div><div class="gmail_extra">Managed to get the Radeon R300 running on mesa 11.1.1 with an old 2013 patch from Michel Dànzer, next problem is of course enabling agpmode, running with pci-mode with radeon.agpmode=-1 works, but is of course slow, and seems to load the cpu a lot.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Upon initial investigation i could not initially believe agp could be this this broken for this long, until i found this.</div><div class="gmail_extra"><div class="gmail_extra"> "committed with Ben Skeggs on Feb 26, 2013"</div><div class="gmail_extra"><a href="https://github.com/DespairFactor/bullhead/commit/650e1203c11354ba84d69ba445abc0efcfe3890a" target="_blank">https://github.com/DespairFactor/bullhead/commit/650e1203c11354ba84d69ba445abc0efcfe3890a</a></div></div><div class="gmail_extra"><a href="http://lxr.free-electrons.com/source/drivers/gpu/drm/nouveau/nouveau_agp.c?v=4.2" target="_blank">http://lxr.free-electrons.com/source/drivers/gpu/drm/nouveau/nouveau_agp.c?v=4.2</a></div><div class="gmail_extra">#ifdef __powerpc__</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span>/* Disable AGP by default on all PowerPC machines for</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * now -- At least some UniNorth-2 AGP bridges are</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * known to be broken: DMA from the host to the card</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * works just fine, but writeback from the card to the</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * host goes straight to memory untranslated bypassing</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * the GATT somehow, making them quite painful to deal</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * with...</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> */</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span>if (nouveau_agpmode == -1)</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span>return false;</div><div class="gmail_extra">#endif</div><div class="gmail_extra"> </div><div class="gmail_extra"> and now later this: </div><div class="gmail_extra"><a href="https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c" target="_blank">https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c</a></div><div class="gmail_extra">#ifdef __powerpc__</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span>/* Disable AGP by default on all PowerPC machines for now -- At</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * least some UniNorth-2 AGP bridges are known to be broken:</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * DMA from the host to the card works just fine, but writeback</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * from the card to the host goes straight to memory</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * untranslated bypassing that GATT somehow, making them quite</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> * painful to deal with...</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span> */</div><div class="gmail_extra"><span style="white-space:pre-wrap"> </span>mode = 0;</div><div class="gmail_extra">#endif</div><div class="gmail_extra"><br></div><div class="gmail_extra">All seems to point to serious issues had around the time of change to ums to kms and a serious regression hitting the linux kernel? No?</div><div class="gmail_extra"><br></div><div class="gmail_extra">Cheers</div><div class="gmail_extra">-Mike</div></div></div>
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