[Bug 74861] [hsw] Fast audio playback on Intel Haswell HDMI due to runtime pm
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Thu May 29 16:21:30 PDT 2014
https://bugzilla.kernel.org/show_bug.cgi?id=74861
--- Comment #7 from Peter Curtis <kernel at pcurtis.com> ---
(In reply to Takashi Iwai from comment #5)
> Is the problem always seen unless i915.disable_power_well=0 is passed? For
> example, if you replug HDMI and play on your TV (I suppose it's no extra
> receiver), does the problem remain?
Yes
>
> Then, check whether the audio side is really properly configured. At
> least, /proc/asound/card*/eld#* file should show that the monitor is
> connected and ELD is valid.
/proc/asound/HDMI/eld#0.2 contains
monitor_present 1
eld_valid 0
>
> If it's properly connected, the next thing to check is
> /sys/kernel/debug/dri/64/i915/i915_power_domain. What entries are enabled
> there.
Lots of files in folder but not one of that name
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