I see this in the dmesg :-
[ 7.955515] rt286 i2c-INT343A:00: Device with ID register ffffffff is
not rt286
and this comes from :-
regmap_read(rt286->regmap,
RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &ret);
if (ret != RT286_VENDOR_ID) {
dev_err(&i2c->dev,
"Device with ID register %x is not rt286\n", ret);
return -ENODEV;
}
This means we are not reading the RT286 codec ID correctly over I2C. I have no
access to this HW so can
someone check the BIOS settings for RT286 and make sure it's enabled in I2S
mode.
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https://bugs.launchpad.net/bugs/1413446
Title:
Audio broken on 2015 XPS 13 (9343) in I2S mode in Ubuntu 14.10/15.04
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