Status: Right now I'm on linux-image-generic-hwe-16.04 version 4.10.0.33.35 and it looks like the situation has improved a lot. The last few days I was able to suspend and resume and the fan remained silent. I only remember one time when the fan was loud and only a reboot helped.
Therefore I'd like to keep this issue open for a few more days, just to see if it happens again... Besides this, I would still be happy if anyone can answer my questions from above... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1711951 Title: CPU fan goes full throttle triggered by waking up from suspend on Lenovo X1 Carbon (4th Gen., 2016) Status in linux package in Ubuntu: In Progress Status in linux source package in Zesty: In Progress Bug description: This is a copy of a very similar bug report which is currently marked as triaged and where my comment is ignored maybe because of that. Please see my additional remarks at the end of this report. --- Thinkpad X1 Carbon 5th generation ultrabook with i7 Kabylake CPU running Ubuntu 17.04 has its fan go full steam if the laptop is woken up from sleep/suspend. Without any sleep/suspend the laptop's fan is basically "off" or silent, even for hours. The bug has been fixed upstream, see 6625914 ACPI / EC: Drop EC noirq hooks to fix a regression 9c40f95 Revert "ACPI / EC: Enable event freeze mode..." to fix a regression and/or https://bugzilla.kernel.org/show_bug.cgi?id=196129 (with duplicate https://bugzilla.kernel.org/show_bug.cgi?id=191181) and I hope this fix will make its way into a near-future kernel update to ubuntu :) Many thanks! --- Source: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1709616 Additional remarks: - Like mentioned in https://bugzilla.kernel.org/show_bug.cgi?id=191181, the bug happens in other Lenovo models as well. It's not limited to the X1 Carbon 5th Gen. - The bug was fixed in kernel 4.13 but not in 4.10. This means that users who run the HWE kernel on Ubuntu 16.04 LTS will have this problem too! I can reproduce it on my local system which has "linux-image-generic- hwe-16.04" installed (4.10.0.32.34). Reading through the comments, it's not exactly clear to me which of the commits has fixed this problem, but I guess that the following two changes have made the difference: https://patchwork.kernel.org/patch/9835823/ https://patchwork.kernel.org/patch/9835825/ I am reporting this as a new issue because the fixes from 4.13 need to be backported to 4.10 for users of the Ubuntu 16.04 HWE kernel. Many thanks! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1711951/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
