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Issue 916773 link

Starred by 3 users

Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 1
Type: Bug



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Hana: Left right audio channels are swapped

Project Member Reported by avkodipelli@google.com, Dec 19

Issue description

Chrome Version: 72.0.3626.22
Chrome OS Version: 11316.29.0
Chrome OS Platform: Hana
Network info: Wifi

Please specify Cr-* of the system to which this bug/feature applies (add
the label below).

Steps To Reproduce:
(1) Play left and right channel testing video.
https://www.youtube.com/watch?v=hTvJoYnpeRQ&t=20
(2) Observe channels.

Expected Result:
- Audio should play as per channel mentioned in the video.

Actual Result:
- Channels swapped.

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
Always

Feedback report: https://listnr.corp.google.com/report/85856740403
 
Components: -Internals>Media>Audio OS>Kernel>Audio
Owner: cychiang@chromium.org
Status: Assigned (was: Untriaged)
Jimmy, please reassign as appropriate.
Labels: -Type-Bug-Regression Type-Bug
Issue also observed on M71(11151.59.071.0.3578.94). Removing regression label.
Labels: M-73
Issue also observed on M73(11429.0.0, 73.0.3644.0)
There is no Hana here. But elm works fine.
There is no change in Hana UCM file for a while, and it is exactly the same as UCM file on elm.
So I have no clue how this bug could happen.

I ahave requested one Hana from MTV.
Comparing dsp.ini between hana and elm, there is a little difference, but just for tuning. The routing is exactly the same.
Did you check the schematic? Is there a chance they reversed the channel select pins on the amps?
Cc: vineeths@chromium.org tonycwlin@chromium.org
+vineeths, tonycwlin

I found the schematic of elm, but could not find the schematic of hana in EE folder.

Hi Vineeth and Tony,
Do you know where can I find the schematics of hana ?
I would like to check if speaker is routed differently.

Thanks!

Hana is a.single board used across many devices

Over 700,000 Hana devices have been built already

So I'm not sure what changed, but I suspect this may be a newer device like sycamore based on the same Hana board.

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