[Bug 91410] [BDW][Audio][HD-A Display] DP/HDMI audio playback abnormal

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91410

--- Comment #18 from Vasily Khoruzhick <anarsoul at gmail.com> ---
(In reply to Lu, Han from comment #12)
> Hi Vasily,
> 
> The issue is reproduced in our BDW NUC too.
> I applied the "diagnose.patch" and check the dmesg, the cdclock received by
> audio changes when issue happens:
> in normal case, cdclock = 337.5MHz;
> when issue happened, cdclock = 540MHz.
> 
> Could you please double check on your platform, through either intel_reg
> read or dmesg, to see if we observed the same issue? Sorry I have no Lenovo
> Carbon X1 gen3 laptop on my hand.

Hi Lu,

I always get cdclock = 675000. It always fails for me, it doesn't depend on
whether system was suspended or not. 

Probably snd_hdac_get_display_clk() returns incorrect value?

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