[SRU][OEM-5.6][PATCH 0/2] alsa: the output volume can't be adjusted on the Lenovo machines with Bass speaker

[Hui Wang]

+binli and shengyao

On 6/11/21 1:48 PM, Timo Aaltonen wrote:
> On 11.6.2021 4.28, Hui Wang wrote:
>> BugLink: https://bugs.launchpad.net/bugs/1931649
>>
>> These 2 patches are already in the ubuntu 5.8.0-generic and later
>> version kernels, but they are not in the oem-5.6 oem kernel yet.
>>
>> [Impact]
>> Users could adjust the speaker's output volume from UI, but the sound
>> doesn't change with the user's adjustment.
>>
>> [Fix]
>> Backport 2 upstream patches, these patches are merged to 5.8.0-generic
>> with stable update, but not in 5.6-oem yet.
>>
>> [Test]
>> run amixer contents | grep DAC1, we could see the DAC1 mixer control
>> is found, adjust the speaker's volume from gnome-sound-setting, then
>> play some sound, we could hear the sound's volume is changed with our
>> adjustment.
>>
>>
>> [Where problems could occur]
>> This could possibly introduce the speaker output doesn't work anymore
>> on lenovo machines with dual speakers, but this posibility is very low,
>> I have tested the patches on 3 different lenovo machines with dual
>> speakers.
>>
>>
>> Hui Wang (1):
>>    ALSA: hda/realtek: make bass spk volume adjustable on a yoga laptop
>>
>> Takashi Iwai (1):
>>    ALSA: hda/realtek - Improved routing for Thinkpad X1 7th/8th Gen
>>
>>   sound/pci/hda/patch_realtek.c | 49 ++++++++++++++++++++++++++++++++++-
>>   1 file changed, 48 insertions(+), 1 deletion(-)
>>
>
> oem-5.6 is practically EOL, it has migrated to oem-5.10 where it 
> hadn't already migrated to hwe-5.8

That is sth weird to me too, I don't know why Lenovo still test oem-5.6 
kernel on a TGL machine.

Hi Binli and Shengyao,

Is it OK to use oem-5.10 kernel to replace oem-5.6 kernel on that machine?

Thanks,

Hui.

>
>