This repo addresses some of the issues of Huawei Matebook running Linux.
First extract tables:
acpidump > acpidump.hex
acpixtract -a acpidump.hex
Put them along with refs.txt and chosen patches, then decompile tables:
iasl -fe refs.txt -da dsdt.dat ssdt*.dat
Apply patches of your choice.
patch < 0001-Enable-S3-sleep-state.patch
This should enable S3 system sleep state (suspend-to-ram), which is much more power-efficient sleep state compared to S0idle. After you install patched DSDT the deep value of mem_sleep option will be unlocked. To use S3 by default add mem_sleep_default=deep to GRUB_CMDLINE_LINUX params list in /etc/default/grub.
patch < 0002-Enable-hardware-buttons-support.patch
Nuff said. This fixes power button and volume buttons.
patch < 0003-Fix-battery-AC-status-reporting.patch
It is buggy out of the box - reports charging while fully charged and more. This mostly fixes behaviour.
It's important to increment DSDT version in dsdt.dsl:
-DefinitionBlock ("", "DSDT", 2, "ALASKA", "A M I ", 0x01072009)
+DefinitionBlock ("", "DSDT", 2, "ALASKA", "A M I ", 0x01072010)
After applying patches you can compile back DSDT table:
iasl dsdt.dsl
You can use it by passing it to kernel at boot time. Actual method depends on your distribution. Your kernel should be built with CONFIG_ACPI_TABLE_UPGRADE.
For Fedora and any distributions using dracut one can place provided 99-acpi-tables.conf file at /etc/dracut.conf.d/. Compiled tables should be placed in /usr/local/lib/firmware/acpi.
After you run
sudo dracut -f
your table upgrades will be added into installed kernels. On kernel updates dracut also will add upgraded tables into them during install.
After resuming from S3 sleep the camera led is switched on by hardware and keeps lighting. To turn it off one can run following command:
i2cset -y -f 7 0x4c 0x28 0
You can set it to run automatically on wakeup, e.g. using systemd you can place provided cam-reset.sh file at /lib/systemd/system-sleep/.
Setting SATA ALPM mode to any other than max_performance currently leads to graphic glitches (flickering). Kernels 4.15+ use mode med_power_with_dipm by default. As workaround you can place provided 99-matebook-alpm.rules file at /etc/udev/rules.d to override this setting.
On Fedora the device often fails to reboot due to bug in wifi driver. Workaround is set CleanupOnExit to false in /etc/firewalld/firewalld.conf.
Some needed pieces of firmware can't be packaged into linux distributions due to licensing constraints, so they need to be installed manually.
First mount efivars (if not mounted already):
mount -t efivarfs none /sys/firmware/efi/efivars
Copy nvram file required by driver to location where driver expects it:
cp /sys/firmware/efi/efivars/nvram-74b00bd9-805a-4d61-b51f-43268123d113 /lib/firmware/brcm/brcmfmac4356-pcie.txt
This fixes poor wifi signal quality. Next for bluetooth to work the hcd firmware is needed. At time of writing one can be obtained here. File needs to be renamed to BCM4354A2-0a5c-6420.hcd and placed at /lib/firmware/brcm/.
Optional step is to place a CLM blob which can be found here at /lib/firmware/brcm/.