<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - nouveau.perflvl kernel parameter doesn't work" href="https://bugs.freedesktop.org/show_bug.cgi?id=66176#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - nouveau.perflvl kernel parameter doesn't work" href="https://bugs.freedesktop.org/show_bug.cgi?id=66176">bug 66176</a> from <a class="email" href="mailto:emil.l.velikov@gmail.com" title="Emil Velikov <emil.l.velikov@gmail.com>"> Emil Velikov</a> <pre>(In reply to <a href="show_bug.cgi?id=66176#c4">comment #4</a>) ... > to be *forced* to MANUAL, regardless of its previous state (which I suspect > is NONE) and then try and set the fan speed. I would call it "set", rather than "forced" In the second part you'll need a "reference point" - which can be one of * The kernel and/or "...I've also done this "manually" using the pathscale tools" * Mmio dump of the blob reclocking the card Initially I would recommend the former > > > * pclk->pll_calc seems to return 0, causing nv40_calc_pll() to throw ERANGE Confirm if the function nv40_calc_pll() is the one throwing ERANGE. Then dwell into the function, and analyse any differences with your "reff point". There may be a typo/inverted logic, as this code moved around in nouveau quite a few times > > * Some of the functions called within nouveau_mem_timing_calc() may need > > tweaking depending on now well we generate the appropriate memory timings nouveau_mem_timing_calc() * parses the memory timing table stored in vbios - nouveau_perf_timing() * generates the appropriate values based on the card generation - nv**_mem_timing_calc() * and the memory type - nouveau_mem_*ddr*() * On newer cards (iirc nvc0+) it maps the timings with memory frequency range. On previous generations the timings are related to the performance level rather than the memory frequency (range) > > > P.S. > > Only one zero is required to change the perflvl - "0" rather than "0,0" > Well, by looking at the code, the performance level consists of 2 parts - AC > (power) and DC (battery) separated by a comma (","), so I used "0,0" for the > sake of completeness. You got me there, I have no recollection when AC/DC got introduced ^_^</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>