forked from torvalds/linux
X13s
Johan Hovold edited this page Apr 29, 2024
·
42 revisions
This page aims to provide an overview of the current status of Linux support for the X13s laptop.
For some background on this project and further details, see my presentation at Kernel Recipes 2023:
https://kernel-recipes.org/en/2023/schedule/the-arm-laptop-project/
Important fixes and support for new features (once stable enough) can be found in my X13s (sc8280xp) wip branches, for example:
https://github.com/jhovold/linux/tree/wip/sc8280xp-6.9-rc6
These branches also include a minimal (but functional) johan_defconfig that serves as documentation for the configuration options that need to be enabled for the X13s.
| Feature | Status |
|---|---|
| Audio | 6.5 |
| Backlight | 6.0 |
| Battery | 6.3 |
| Bluetooth | 6.4 |
| Camera | started |
| CPUfreq | 6.0 |
| Display | 6.3 |
| EFI variables | 6.7 |
| Fingerprint reader | wip branch |
| GPU | 6.5 |
| Hibernation | - |
| Keyboard | 6.0 |
| Keyboard special keys | - |
| Modem | 6.2 |
| NVMe SSD | 6.2 |
| PCIe (x4) | 6.2 |
| Remoteproc | 6.0 |
| RTC | 6.4 |
| Suspend | 6.1 |
| Thermal sensors | 6.2 |
| Touchpad (alternate) | 6.0 (6.4) |
| Touchscreen | 6.0 |
| TPM | - |
| USB | 6.0 |
| USB-PD | started |
| USB-C DisplayPort Alt Mode | 6.3 |
| Video acceleration | wip branch |
| Virtualisation | - |
| Watchdog | 6.0 |
| Wi-Fi | 6.4 |
To boot Linux the following kernel parameters need to be provided:
clk_ignore_unused pd_ignore_unused arm64.nopauth efi=noruntime
due to a generic resource handover issue and a couple of firmware bugs, respectively.
With recent UEFI firmware efi=noruntime can be left out when the Linux Boot option is enabled.
- alsa-ucm-conf 1.2.11
- linux-firmware-20230919
- also video acceleration firmware (qcvss8280.mbn) with WIP branch
- Mesa 23.1.4
- ModemManager 1.20 + fcc-unlock symlink (and qmicli)
- Qualcomm protection-domain mapper daemon (pd-mapper)
- Active speaker protection not enabled, volume limited for now
- DisplayPort output not enabled
- Pipewire playback and capture issues (switch to Pulseaudio as workaround)
- Reducing quantum size appears to help with playback issues
pw-metadata -n settings 0 clock.max-quantum 1024
- Pops and clicks
-
Speaker digital gain changed by codec driver(fixed in 6.8-rc3, 6.7.4, 6.6.16)- Can result in too quiet or distorted playback
- Install alsa-ucm-conf 1.2.11 and remove old state to restore default settings
systemctl stop alsa-restore; rm /var/lib/alsa/asound.state; reboot
- Connectivity issues due to missing board-specific firmware (e.g. very limited range)
- Device address needs to be set manually for now
btmgmt --index 0 public-addr 00:11:22:33:44:55-
Address needs to be set in reverse (little-endian) order(fixed in 6.9-rc3, 6.8.5, 6.6.26)
- Probe failure due to command timeouts (infrequent)
- Link training fails during resume (very infrequent)
-
GNOME Mutter Wayland compositor crashes due to a Mutter bug(fixed in GNOME 46) - Image corruption with some high resolution modes
- Support for some functions like mic mute is missing
- ModemManager 1.20 and 1.21 require a fcc-unlock symlink directly to the vendor script
ln -sf /usr/share/ModemManager/fcc-unlock.available.d/105b /etc/ModemManager/fcc-unlock.d/105b\:e0c3
- aDSP fails to register its services (e.g. sound, battery, USB-C orientation) (very infrequent)
-
All displays fail to resume if suspending with external display connected(fixed in 6.8) - All displays fail to resume if suspending after disconnecting external display in X
- Crash on resume if disconnecting external display while suspended
- Not yet hitting deepest low-power state during suspend
- USB disconnect triggers wakeup (disconnect before suspending as workaround)
-
Wi-Fi suspend issues(fixed in linux-firmware-20240220)- Firmware wakes system up immediately or crashes on resume in some setups
- GPU throttling not implemented
- Fails to probe due to missing post-reset delay, trigger reprobe as workaround (fixed in wip branch)
echo 4-0010 > /sys/bus/i2c/drivers/i2c_hid_of/bind
- Display driver does not yet support 4-lane DisplayPort Alt Mode
- USB Power Delivery (USB-PD) not fully implemented
- Some adapters (e.g. docking stations) may fail to charge battery
- USB-C coldplug orientation detection not working (flip cable as workaround)
- MAC address not static, can be worked around using udev (e.g. in /etc/udev/rules.d/90-net-address.rules)
ACTION=="add", SUBSYSTEM=="net", KERNELS=="0006:01:00.0", RUN+="/usr/bin/ip link set dev $name address xx:xx:xx:xx:xx:xx" - Wi-Fi breaks due to ring-buffer corruption (infrequent)