Also tried to gather powertop-related issues for further analysis, however, wasn't able to do it completely:
1) Firstly I enabled next startup option: dyndbg="file ec.c +p ; drivers/pci/* +p". I added ACPI's ec as it might be fault reason as well. At least for some models, EmbeddedControl includes a table for fan temperatures as, for example, implemented in https://github.com/dominiksalvet/asus-fan-control Kernel messages could be found in dmesg_startup during the startup of the system. 2) Before gathering data via powertop I tried to emulate maximal speed. For me it happens when I try to editing something or opening video in the browser. dmesg_change_speed gathered for this case. 3) Finally, I tried to run powertop and... my keyboard was stuck. It happens in 100% of cases. So, what I did I run next cmd: powertop --auto-tune 2> powertop_start_err > powertop_start_out && sleep 5 && dmesg > dmesg_powertop rebooted and attached both powertop_start_err and powertop_start_out. No need to attach dmesg_powertop as it always empty. Seems accordingly to https://askubuntu.com/questions/1131279/powertop-cpufreq-stats-failed-and-devfreq-not-enabled-running-auto-tone powertop is not an appropriate utility for notebooks. Please, suggest something else. ========================================================================== My conclusion so far seems it related somehow to ACPI float regions that somehow overlap with other devices. P.S. find my system-related info for my ASUS G752VL in latest comments of https://bugzilla.kernel.org/show_bug.cgi?id=153281 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1775717 Title: CPU/GPU Fans suddenly go 100% RPM on Asus ROG G752VT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1775717/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
