Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.20 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.20-rc3 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to thermald in Ubuntu. https://bugs.launchpad.net/bugs/1803881 Title: thermal thermal_zone4: failed to read out thermal zone (-61) Status in linux package in Ubuntu: Incomplete Status in thermald package in Ubuntu: New Bug description: Thermald can't read zone4. It's making my fan go crazy, this issue seems to be a bit more controlled in 18.10. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic sudo apt-cache policy thermald thermald: Installed: 1.7.0-5ubuntu1 Candidate: 1.7.0-5ubuntu1 Version table: *** 1.7.0-5ubuntu1 500 500 http://gb.archive.ubuntu.com/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status cat /sys/class/thermal/thermal_zone4/type iwlwifi find /sys/class/thermal/thermal_zone4/ -type f -print -exec cat {} \; /sys/class/thermal/thermal_zone4/uevent /sys/class/thermal/thermal_zone4/trip_point_5_temp -32768000 /sys/class/thermal/thermal_zone4/trip_point_3_type passive /sys/class/thermal/thermal_zone4/trip_point_4_temp -32768000 /sys/class/thermal/thermal_zone4/trip_point_2_type passive /sys/class/thermal/thermal_zone4/power/runtime_active_time 0 /sys/class/thermal/thermal_zone4/power/runtime_active_kids 0 /sys/class/thermal/thermal_zone4/power/runtime_usage 0 /sys/class/thermal/thermal_zone4/power/runtime_status unsupported /sys/class/thermal/thermal_zone4/power/autosuspend_delay_ms cat: /sys/class/thermal/thermal_zone4/power/autosuspend_delay_ms: Input/output error /sys/class/thermal/thermal_zone4/power/async disabled /sys/class/thermal/thermal_zone4/power/runtime_suspended_time 0 /sys/class/thermal/thermal_zone4/power/runtime_enabled disabled /sys/class/thermal/thermal_zone4/power/control auto /sys/class/thermal/thermal_zone4/available_policies power_allocator user_space bang_bang fair_share step_wise /sys/class/thermal/thermal_zone4/policy step_wise /sys/class/thermal/thermal_zone4/trip_point_3_temp -32768000 /sys/class/thermal/thermal_zone4/trip_point_1_type passive /sys/class/thermal/thermal_zone4/k_d cat: /sys/class/thermal/thermal_zone4/k_d: Input/output error /sys/class/thermal/thermal_zone4/sustainable_power cat: /sys/class/thermal/thermal_zone4/sustainable_power: Input/output error /sys/class/thermal/thermal_zone4/type iwlwifi /sys/class/thermal/thermal_zone4/trip_point_7_type passive /sys/class/thermal/thermal_zone4/offset cat: /sys/class/thermal/thermal_zone4/offset: Input/output error /sys/class/thermal/thermal_zone4/slope cat: /sys/class/thermal/thermal_zone4/slope: Input/output error /sys/class/thermal/thermal_zone4/trip_point_2_temp -32768000 /sys/class/thermal/thermal_zone4/trip_point_0_type passive /sys/class/thermal/thermal_zone4/trip_point_6_type passive /sys/class/thermal/thermal_zone4/emul_temp cat: /sys/class/thermal/thermal_zone4/emul_temp: Permission denied /sys/class/thermal/thermal_zone4/k_po cat: /sys/class/thermal/thermal_zone4/k_po: Input/output error /sys/class/thermal/thermal_zone4/integral_cutoff cat: /sys/class/thermal/thermal_zone4/integral_cutoff: Input/output error /sys/class/thermal/thermal_zone4/k_i cat: /sys/class/thermal/thermal_zone4/k_i: Input/output error /sys/class/thermal/thermal_zone4/trip_point_1_temp -32768000 /sys/class/thermal/thermal_zone4/k_pu cat: /sys/class/thermal/thermal_zone4/k_pu: Input/output error /sys/class/thermal/thermal_zone4/temp 46000 /sys/class/thermal/thermal_zone4/trip_point_7_temp -32768000 /sys/class/thermal/thermal_zone4/trip_point_5_type passive /sys/class/thermal/thermal_zone4/trip_point_0_temp -32768000 /sys/class/thermal/thermal_zone4/trip_point_6_temp -32768000 /sys/class/thermal/thermal_zone4/trip_point_4_type passive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803881/+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
