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 repo which can be installed via the system76-acpi-dkmsAUR 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-dkmsAUR 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 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.