<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - commit c1132367 "Extract GT render sleep (rc6) management" prevents entering s2idle" href="https://bugs.freedesktop.org/show_bug.cgi?id=111909#c15">Comment # 15</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - commit c1132367 "Extract GT render sleep (rc6) management" prevents entering s2idle" href="https://bugs.freedesktop.org/show_bug.cgi?id=111909">bug 111909</a> from <a class="email" href="mailto:kenny@panix.com" title="Kenneth C <kenny@panix.com>"> Kenneth C</a> <pre>So this is interesting: I was browsing the list of DRI/i915 bugs and saw <a class="bz_bug_link bz_status_NEW " title="NEW - [guc/huc] Deep Package C-states never reached after laptop screen is turned off" href="show_bug.cgi?id=111594">https://bugs.freedesktop.org/show_bug.cgi?id=111594</a> ([guc/huc] Deep Package C-states never reached after laptop screen is turned off) and verified that indeed (on my branch of Linus' tip with all recent DRI/i915 changes unmerged) I also never go back into GFX%rc6 states after a suspend. So I'd added the patch in <a href="https://patchwork.freedesktop.org/patch/337552/">https://patchwork.freedesktop.org/patch/337552/</a> (and modifying the condition to essentially read "if(false)" as my tree doesn't have the "submission_supported" structure member and commit 724df646c8037 has it explicitly disabled anyway). Long story short though, no-oping intel_guc_resume() has allowed my machine to have GFX%rc6 after a suspend, and I suspect it may help with s0 idle power consumption as well. I do have "enable_guc=2" set so I may get HuC operation, BTW.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>