Created attachment 104216 dmesg of 3.16 + patch from comment #80 Woohooo! Daniel, your patch from comment #80 seems to make the bug go away!
Attached is dmesg from 3.16 + patch from comment #80. 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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1339939 Title: [Lenovo ThinkPad T400] intel graphics fail after suspend with 3.16 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1339939/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
