[alsa-devel] HDA HDMI audio doesn't work on Intel Geminilake machines

[Hui Wang]

On 2017年11月03日 16:33, Subhransu S. Prusty wrote:
> On Thu, Nov 02, 2017 at 12:40:46PM +0530, Hui Wang wrote:
>> We have several Geminilake laptop and desktop machines, on these
>> machines, the HW configs are same and are as shown below:
>>
>> the HDA controller: 00:0e.0 Audio device [0403]: Intel Corporation
>> Device [8086:3198] (rev 01)
>> the HDMI codec: Vendor Id: 0x8086280d
>> VGA controller: 00:02.0 VGA compatible controller [0300]: Intel
>> Corporation Device [8086:3184] (rev 01) (prog-if 00 [VGA controller])
>>
>> The problem is if we boot the system without plugging the HDMI monitor,
>> the Linux kernel can't find HDMI codec at all. If we plug the HDMI
>> monitor before booting up, the kernel can find the HDMI codec, but there
>> are many errors (as shown below) and the HDMI audio can't play any sound.
> Please create a bugzilla. Share the logs after applying the attached test
> patch. Note to enable the debug logs.
>
The bug was created, https://bugzilla.kernel.org/show_bug.cgi?id=197785

If need me to do more tests, just let me know.

Thanks in advance.

Hui.