This is how I got the DSDT ACPI table patched and installed: 1. Disassemple the current dsdt ACPI table (see [1]): ``` mkdir -p /tmp/acpitables cd /tmp/acpitables sudo acpidump > acpidump.out acpixtract -a acpidump.out iasl -d dsdt.dat ``` In my case the output dsdt.dsl file contained some invalid error output lines at the very beginning which I just removed. Otherwise, the compiling in step 4 results in errors.
3. Apply this patch to dsdt.dsl (see [2]): ``` - Name (_HID, "XXXX0000") // _HID: Hardware ID + Name (_HID, "ELAN062F") // _HID: Hardware ID ``` 4. Create an assembler source file out of the patched dsdt.dsl: ``` iasl -sa dsdt.dsl ``` 5. Create a CPIO archive to be loaded by the bootloader (see [3]): ``` mkdir -p kernel/firmware/acpi cp dsdt.aml ssdt1.aml kernel/firmware/acpi find kernel | cpio -H newc --create > acpi_override sudo cp acpi_override /boot ``` 6. Install the patched dsdt file (see [4]): ``` cpio --extract < ./acpi_override cp kernel/firmware/acpi/dsdt.aml /boot/fixed_dsdt.aml # Create or update /boot/grub/custom.cfg to contain acpi /fixed_dsdt.aml ``` Sources: [1] https://01.org/linux-acpi/utilities [2] https://github.com/realnickel/lenovo_thinkbook_iml15_touchpad_acpi_fix/commit/de0ca637f7d8de2164c787801b4af9d4ff586d67 [3] https://wiki.archlinux.org/index.php/DSDT#Using_a_CPIO_archive https://askubuntu.com/questions/1027552/including-a-custom-acpi-dsdt-with-kubuntu-18-04-rc1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853277 Title: Lenovo ThinkBook 14-IML Touchpad not showing up in /proc/bus/input/devices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1853277/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
