Andrew (keen101): 1) In order to better confirm applicability, could you please undo your WORKAROUND, and test the kernel parameter: intel_idle.max_cstate=1
what is most helpful is you personally testing this (not relying on someone else, somewhere else, with some other/similar hardware). 2) If the above does indeed provide a WORKAROUND, as per Len Brown (upstream) he needs you to test a debug patch, and then use a script that increases the probability of invoking the bug: 1) Debug patch: https://bugzilla.kernel.org/attachment.cgi?id=248751 2) Script: https://bugzilla.kernel.org/attachment.cgi?id=248841 Could you please temporarily remove your WORKAROUND, and use this patch to provide the requested information? ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1575467 Title: [Dell Inspiron 3451] WARNING: CPU: 1 PID: 1297 at /build/linux-lts- utopic-vy2yyy/linux-lts- utopic-3.16.0/drivers/gpu/drm/i915/intel_display.c:1743 vlv_wait_port_ready+0x126/0x170 [i915]() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575467/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
