A true mainline Linux Kernel for the Pinebook Pro
Hi all,

I've got a major update for you all regarding S3 sleep. Thanks to a forward port of the SIP driver by @theotherjimmy the current state of the v5.5 branch does finally support S3 sleep giving you more than 200 hours of standby time.
However, there is a small catch: It does not work with mainline u-boot yet. Only the BSP u-boot is supported.

Additionally you may also see WiFi instability after sleep. I've not done any extensive testing on that yet.

(02-10-2020, 01:12 AM)Der Geist der Maschine Wrote: In the past, there was a whine while playing audio. It continued for two seconds and vanished.

With the new kernel (or other Manjaro changes?), the whine is permanent. I only get rid of when disabling audio in pavucontrol.

I've not observed any change regarding automatic power control of the amplifier. Some userspace applications tend to keep DAPM from putting the audio path to sleep though. Have you checked wether closing all open applications makes a difference yet?

(02-10-2020, 09:46 PM)xmixahlx Wrote: i can confirm the low volume, high pitched whine on speakers with current kernel and alsa config.

Unfortunately the whine itself is a hardware issue. I can do nothing about that. However, the speaker amplifier should get disabled when there is no application playing sound.

(02-10-2020, 09:46 PM)xmixahlx Wrote: speaker output also has low volume output into headphones.

That is expected behaviour. Headphone output and speakers are connected in parallel on the mainboard of the Pinebook Pro. Again there is nothing I can do about that. Think it should not really be an issue though.

Have a nice day,

Manjaro ARM

Kernel dev
Buy me a coffee

Messages In This Thread
RE: A true mainline Linux Kernel for the Pinebook Pro - by tsys - 02-11-2020, 01:56 AM
5.12 - by kalpazanius - 04-26-2021, 04:38 PM
RE: 5.12 - by ramsey - 06-19-2021, 05:36 PM
RE: 5.12 - by linuxad - 06-20-2021, 09:26 AM

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