System76 Lemur Pro

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The Lemur Pro is a laptop sold by System76. It was first released in April 2020.

High console log level

When Arch is booted from a live environment, or is installed from a live environment, some users have reported a high console log level. This causes a flood of messages to be printed to the console, which can make it very difficult to use. This issue is resolved with the https://github.com/pop-os/system76-acpi-dkms/ repo which can be installed via the system76-acpi-dkms^AUR package.

Note that the current console log level is given by the first entry of the command cat /proc/sys/kernel/printk (run as the regular user). Prior to installing the system76-acpi-dkms^AUR package, the kernel messages can be temporarily avoided by setting the current console log level, to 4 for example, by running the command echo 4 > /proc/sys/kernel/printk (run as the root user).

Audio issues with the headphone jack

It has been reported that the audio may not work correctly when using the headphone jack. A reported solution is to set the model parameter of the snd_hda_intel kernel module to headset-mode-no-hp-mic (note that this solution corresponds to commit 5132da7 in the https://github.com/pop-os/linux GitHub repo). See Kernel module#Setting module options for information on how to set this parameter. As an example, you can make this setting persistent at boot by creating the file /etc/modprobe.d/headset.conf with the contents options snd_hda_intel model=headset-mode-no-hp-mic.