AceLan Kao, First, I added "noble-proposed" to /etc/apt/sources.list.d/ubuntu.sources: $ sudo sed -i '/^Suites/ s/$/ noble-proposed/' /etc/apt/sources.list.d/ubuntu.sources
then I ran, apt update: $ sudo apt update Then I was able to install the 6.8.0-40 kernel: $ sudo apt install linux-image-generic/noble-proposed Reading package lists... Done Building dependency tree... Done Reading state information... Done Selected version '6.8.0-40.40' (Ubuntu:24.04/noble-proposed [amd64]) for 'linux-image-generic' The following additional packages will be installed: linux-image-6.8.0-40-generic linux-modules-6.8.0-40-generic linux-modules-extra-6.8.0-40-generic Suggested packages: fdutils linux-tools linux-headers-6.8.0-40-generic The following NEW packages will be installed: linux-image-6.8.0-40-generic linux-image-generic linux-modules-6.8.0-40-generic linux-modules-extra-6.8.0-40-generic 0 upgraded, 4 newly installed, 0 to remove and 97 not upgraded. Need to get 167 MB of archives. After this operation, 166 MB of additional disk space will be used. Do you want to continue? [Y/n] Then I rebooted: $ sudo reboot $ uname -a Linux victus 6.8.0-40-generic #40-Ubuntu SMP PREEMPT_DYNAMIC Fri Jul 5 10:34:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux there was no improvement: $ sudo su - # echo 'file ucsi.c +p' > /proc/dynamic_debug/control # cat /proc/dynamic_debug/control|egrep ucsi drivers/usb/typec/ucsi/ucsi.c:978 [typec_ucsi]ucsi_connector_change =p "Early connector change event\n" drivers/usb/typec/ucsi/ucsi.c:1626 [typec_ucsi]ucsi_register =p "Registered UCSI interface with version %x.%x.%x" # modprobe ucsi_acpi # dmesg|egrep ucsi [ 142.839586] ucsi_acpi USBC000:00: Registered UCSI interface with version 1.0.0 [ 147.900394] ucsi_acpi USBC000:00: failed to reset PPM! [ 147.900400] ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed next attempt will be with v6.11-rc1 as you have suggested. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2073538 Title: kacpi_notify high cpu on interrupt gpe17 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2073538/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs