[Bug 93881] HDMI sometimes muted at boot

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=93881

guillaume-florianx.vidal at intel.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #13 from guillaume-florianx.vidal at intel.com ---
Hi Mengdong,
This is not reproducible on BSW-M, but eDP is off when I plug HDMI (with Eywa,
drm or mainline kernels).

Tested with AOC 2369M monitor, same result, same logs.

I take new snapshot on 4.0.0 mainline kernel, attached files are in
"04_17_15-4.0-logs.zip"
What is new is that we can see invalid AFG subtree in latest kernel, meaning
codec lost response.
IEC958 Playback switch is already on with latest kernel. Root cause is
elsewhere.

Your patch "i915-not-disable-power-well.patch" fixes the issue.
$cat sys/module/i915/parameters/disable_power_well
0

The issue is not reproducible when i915 power well is disabled.

-- 
You are receiving this mail because:
You are on the CC list for the bug.