[SRU][Focal][OEM-5.6][PATCH 0/1] No sound, Dummy output on Acer Swift 3 SF314-57G with Ice Lake core-i7 CPU

Hui Wang hui.wang at canonical.com
Wed Jul 29 08:27:58 UTC 2020

On 2020/7/29 下午3:46, Stefan Bader wrote:
> On 29.07.20 06:25, Hui Wang wrote:
>> BugLink: https://bugs.launchpad.net/bugs/1877757
>> This patch is already in the 5.8-rc1, so it is already in the Groovy kernel.
>> I thought this patch will be merged to ubuntu kernel with stable patches,
>> but today a ubuntu user pushed me to do sth to let this patch be merged
>> to ubuntu kernel asap, so I send this SRU.
> This is no argument for SRU. Either you are behind this and decided that there
> is little enough risk and enough benefit to go ahead or you push back at the
> user if there is good arguments against. What I try to say, we do get told by
> users (or PMs). They can ask but it is us making the decisions.

OK, got it.


>> [Impact]
>> On this machine, after booting up, there is no valid sound card, the
>> gnome-control-center shows a dummy output only. check the dmesg, the alsa
>> sof driver fails to initialize.
>> [Fix]
>> Backport a patch from upstream, after applying this patch, the sof driver
>> will not fail anymore even the codec driver is hda_generic
>> [Test Case]
>> A couple of users already test this patch on their machines, after booting
>> up, there is a valid sound card, and could output sound from output devices.
>> [Regression Risk]
>> Low, this is cherry-picked from upstream, and this just adds a new kind of
>> codec (generic) support, and a couple of ubuntu users already verified this
>> patch.
> Technically this looks ok but the bug report misses proper status (and
> importance settings). Please fix this.

Okay, done.


> Thanks,
> Stefan
>> Kai Vehmanen (1):
>>    ASoC: SOF: Intel: hda: fix generic hda codec support
>>   sound/soc/sof/intel/hda-codec.c | 51 +++++++++++++++++++++++++++++----
>>   1 file changed, 45 insertions(+), 6 deletions(-)

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