Ath9k : high video latency and low transfer speed

[Yes21]

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[Yes21]

I copy here @user1321 observations :

I have some news..

1. After replacing firmware file:
   /lib/firmware/ath9k_htc/htc_9271-1.4.0.fw
   with htc_9271-1.4.0.fw from build tree video not freezing anymore.
   It`s look like ImageBuilder script DONT overwrite existing files.
   I have some errors during build process, so, maybe my guess is incorrect. But I belive I am correct in my guess.
   Also, I strongly recommend to take a look at /etc/fstab file.
   As file system in RW state.

So, solution can be:

remove file first, or maybe add some parameter to replace if file exist.

So, to confirm, you may try to replace file at your side.
https://github.com/RespawnDespair/wifibroadcast-image-builder/tree/master/stages/04-Wifibroadcast/FILES/overlay/lib/firmware

file to replace:
/lib/firmware/ath9k_htc/htc_9271-1.4.0.fw

also, it`a good idea to check file system state. Is it ReadOnly or ReadWrite. Run: mount

Other possible reason: if there someware command apt-get upgrade. But, as file /etc/fstab look like in default state, probably problem just with copy process

[Yes21]

vitaliy zlidnev, [22.12.18 19:02]
I just noticed that firmware copied not to /lib/firmware/ath9k_htc/
but to /lib/firmware/
Maybe it`s just wrong path?))

And its explaining why its work fine when firmware was replaced manually.

Jelle Tigchelaar, [22.12.18 19:03]
Damn, thats an easy fix, just move it to the correct folder in the overlay...