I have the same issue when I insert sudo echo "options acerhdf kernelmode=1 interval=5 fanon=67000 fanoff=57000" > /etc/modprobe.d/acerhdf.conf
and do modprobe acerhdf then i get in kern.log Jul 28 17:27:45 Andromeda kernel: [ 2309.098985] acerhdf: Acer Aspire One Fan driver, v.0.7.0 Jul 28 17:27:45 Andromeda kernel: [ 2309.099026] acerhdf: unknown (unsupported) BIOS version Acer/Aspire A315-51/V1.12, please report, abortin My kernel is 4.15.0-29-generic DISTRIB_ID=Ubuntu DISTRIB_RELEASE=18.04 DISTRIB_CODENAME=bionic DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS" NAME="Ubuntu" VERSION="18.04.1 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.1 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/"; SUPPORT_URL="https://help.ubuntu.com/"; BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"; PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"; VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic -- 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/435958 Title: acerhdf: unknown (unsupported) BIOS version Status in linux package in Ubuntu: Fix Released Bug description: After booting, the system displays the following error in terminal: acerhdf: unknown (unsupported) BIOS version Acer/Aspire 4810T/V1.28., please report, aborting! After booting fine. I'm in karmic alpha 6. I updated the bios acer aspire 4810T timeline to version 1.28. With Karmic Alpha 4 did not show this error. I attach dmesg output file. Error is in line 696 from gedit. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/435958/+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
