Bug 200463

Summary:	Acer Aspire Switch 10 (SW5-012) no sound, bytcr-rt5640 loads successfully
Product:	Drivers	Reporter:	Martin Cihlář (martin.cibule)
Component:	Sound(ALSA)	Assignee:	Jaroslav Kysela (perex)
Status:	NEW ---
Severity:	normal
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	any	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	dmesg output dmesg output after starting X alsa-info.sh output Kernel config

Description Martin Cihlář 2018-07-09 17:37:38 UTC

Device running Gentoo Linux, kernel compiled from gentoo-sources (i.e. not vanilla from kernel.org). Issue reproducible on a 4.17 kernel as well. Currently using the PulseAudio with UCM file from:
https://github.com/plbossart/UCM/tree/master/bytcr-rt5640
Note the firmware loading messages from intel_sst_acpi, FW seems to fail to load at boot, but loads successfully after starting X server. Firmware fails to load even when the FW blob is built in (FIRMWARE_IN_KERNEL=y, EXTRA_FIRMWARE=intel/fw_sst_0f28.bin, EXTRA_FIRMWARE_DIR=/lib/firmware).
Let me know if you need anything.

Comment 1 Martin Cihlář 2018-07-09 17:39:21 UTC

Created attachment 277295 [details]
dmesg output

Comment 2 Martin Cihlář 2018-07-09 17:39:58 UTC

Created attachment 277297 [details]
dmesg output after starting X

Comment 3 Martin Cihlář 2018-07-09 17:40:46 UTC

Created attachment 277299 [details]
alsa-info.sh output

Comment 4 Martin Cihlář 2018-07-09 17:41:32 UTC

Created attachment 277301 [details]
Kernel config