<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVCF] PWM fan speed too high under kernel 3.15" href="https://bugs.freedesktop.org/show_bug.cgi?id=80901#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVCF] PWM fan speed too high under kernel 3.15" href="https://bugs.freedesktop.org/show_bug.cgi?id=80901">bug 80901</a> from <a class="email" href="mailto:martin.peres@ensi-bourges.fr" title="Martin Peres <martin.peres@ensi-bourges.fr>"> Martin Peres</a> <pre>Thanks for all this information. It seems like NVIDIA changed the default minimum temperature before increasing the fan speed (<a href="http://code.woboq.org/linux/linux/drivers/gpu/drm/nouveau/core/subdev/therm/fan.c.html#195">http://code.woboq.org/linux/linux/drivers/gpu/drm/nouveau/core/subdev/therm/fan.c.html#195</a>). Based on your information, I would guess it is set to 60°C instead of the 40°C I saw on some card. It is very possible that they set a different value per chipset. I'll check again with a recent version of the blob what is the default temperature at which the fan speed starts being increased but I don't think the fix should be to bump the value (that I will set to the minimum value I found across the boards). The proper fix would be to let users change this value in sysfs. I'll keep the bug open as a reminder but my time is very limited this summer. If you feel like writing the patch (in nouveau_hwmon.c), I would gladly review it! Thanks for reporting :)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>