<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [gm45 regression] [drm:init_ring_common]: *ERROR* render ring initialization failed" href="https://bugs.freedesktop.org/show_bug.cgi?id=76554#c82">Comment # 82</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [gm45 regression] [drm:init_ring_common]: *ERROR* render ring initialization failed" href="https://bugs.freedesktop.org/show_bug.cgi?id=76554">bug 76554</a> from <a class="email" href="mailto:jikos@jikos.cz" title="Jiri Kosina <jikos@jikos.cz>"> Jiri Kosina</a> <pre>Created <a href="attachment.cgi?id=104216" name="attach_104216" title="dmesg of 3.16 + patch from comment #80">attachment 104216</a> <a href="attachment.cgi?id=104216&action=edit" title="dmesg of 3.16 + patch from comment #80">[details]</a> dmesg of 3.16 + patch from <a href="show_bug.cgi?id=76554#c80">comment #80</a> Woohooo! Daniel, your patch from <a href="show_bug.cgi?id=76554#c80">comment #80</a> seems to make the bug go away! Attached is dmesg from 3.16 + patch from <a href="show_bug.cgi?id=76554#c80">comment #80</a>. No more ring initialization errors in dmesg, everything working properly. I'll do a couple more suspend/resume cycles to be sure that the problem just doesn't happen less frequently and will report back. So either it's the wait_for_atomic() -> wait_for() change, the extra wait_for() added in order to wait for the head to be cleared, or the extra I915_READ_HEAD() reads inserted. Unless you now have a clear idea of what's happening, I'll try to isolate which of the changes in the patch is the one that makes the difference.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>