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.
OK, got it, thanks.
Codec: Intel Geminilake HDMI
Address: 2
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x8086280d
Subsystem Id: 0x80860101
Revision Id: 0x100000
No Modem Function Group found
Default PCM:
N/A
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
Power: setting=UNKNOWN, actual=UNKNOWN, Error, Clock-stop-OK,
Setting-reset
Invalid AFG subtree
--endcollapse--
[ 25.504069] snd_hda_intel 0000:00:0e.0: azx_get_response timeout,
switching to polling mode: last cmd=0x20bf8100
[ 26.516125] snd_hda_intel 0000:00:0e.0: No response from codec,
disabling MSI: last cmd=0x20bf8100
[ 27.528058] snd_hda_intel 0000:00:0e.0: azx_get_response timeout,
switching to single_cmd mode: last cmd=0x20bf8100
[ 27.528259] azx_single_wait_for_response: 12 callbacks suppressed
[ 27.547927] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register
0x2f0d00. -5
We have tested the latest mainline kernel, but the testing result is the
same.
So does the existing kernel driver support the HDMI audio well for
Geminilake? If it does, what is wrong with those machines, HW issue or
Hi,
Yes HDMI audio is tested on Geminilake. Can you please share information on
model you are testing? Also what is the BIOS version you are using?
They are all Dell laptop or desktop machines which are not released to
market yet. The BIOS version of one of the laptops is 0.3.4.
And I will try to upload logs to the bugzilla.
Thank you.
BIOS issue?
Yes this may be a BIOS issue as well.
Regards,
Subhransu
Thanks in advance.
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