<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [dpm] rs880: Power usage doesn't drop with dpm=1" href="https://bugs.freedesktop.org/show_bug.cgi?id=67321#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [dpm] rs880: Power usage doesn't drop with dpm=1" href="https://bugs.freedesktop.org/show_bug.cgi?id=67321">bug 67321</a> from <a class="email" href="mailto:l-1@dbr.me.uk" title="l-1@dbr.me.uk">l-1@dbr.me.uk</a> <pre>(In reply to <a href="show_bug.cgi?id=67321#c3">comment #3</a>) > (In reply to <a href="show_bug.cgi?id=67321#c2">comment #2</a>) > > Will DPM ever reach the levels of fglrx ? > > I'm not sure what else fglrx does on rs780 off hand. A suggestion: Stutter Mode I'm not a linux expert but I've done some ad hoc testing. The results imply that stutter mode is working on fglrx but not working on r600g. My hardware is Athlon II x2 240, RS880G + 128MB sideport RAM Kernel 3.12.9 At idle with the HT bus set to its default 2GHz the wallplug power is: fglrx 31.7W r600g 36.2W If I set the HT bus to 400MHz, in the BIOS, as a crude approximation of disconnecting the HT bus 80%, I get: fglrx 31.2W r600g 32.7W (a reduction of 3.5W) I read that, when using UMA, it should be possible to disconnect the HT bus 93% of the time, and presumably even more with sideport RAM. If my idea is plausible, is it possible to enable stutter mode in r600g?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>