<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - pwm1 value not restored during hibernate/restore cycle in the event of manual fan management mode" href="https://bugs.freedesktop.org/show_bug.cgi?id=66177#c9">Comment # 9</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - pwm1 value not restored during hibernate/restore cycle in the event of manual fan management mode" href="https://bugs.freedesktop.org/show_bug.cgi?id=66177">bug 66177</a> from <a class="email" href="mailto:martin.peres@ensi-bourges.fr" title="Martin Peres <martin.peres@ensi-bourges.fr>"> Martin Peres</a> <pre>(In reply to <a href="show_bug.cgi?id=66177#c7">comment #7</a>) > Sorry, one other thing I forgot to mention, which should be pretty obvious, > given what I reported so far: > > The "auto" fan management seems to work as expected when I do *not* use it > after hibernate/restore. > > In other words, when I boot up my machine (which, by default, has fan > management disabled) and then select "auto" fan management with "echo 2 > > ../pwm1_enable", then things are OK - the fan duty (pwm1) constantly hovers > between 20 and 28, depending on my card temperature, keeping that > temperature under control. No problems there. That's what I tested and it indeed worked beautifully. But I only tested that on my desktop PCs and I never suspend them. Silly me... > > Things are then *really* screwed up when I do hibernate/restore as reported > previously. So, I suspect the hibernate/restore does something to the > nouveau driver which prevents the auto mode from working properly. Again, what worries me the most is the fact that the fan stop being updated randomly. That's a SERIOUS bug! For the sysfs bug, I'll try to come up with an acceptable solution for both users and devs.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>