Difference between revisions of "PineNote Development/Software Tweaks"
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This will improve BT audio quality at least when using the AAC codec. In my experience, the quality is more than acceptable, but there are still issues apparent: occasional isolated stutters even on AAC; prohibitively frequent stutters on SBC-XQ remain. Fully resolving BT audio issues might require further changes similar to the one described above, or may alternatively be a matter of audio software settings (e. g., process priority, audio server buffer settings). Investigation ongoing. | This will improve BT audio quality at least when using the AAC codec. In my experience, the quality is more than acceptable, but there are still issues apparent: occasional isolated stutters even on AAC; prohibitively frequent stutters on SBC-XQ remain. Fully resolving BT audio issues might require further changes similar to the one described above, or may alternatively be a matter of audio software settings (e. g., process priority, audio server buffer settings). Investigation ongoing. | ||
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Revision as of 20:49, 12 January 2023
Fixing Bluetooth
Some users have noticed instability with their wireless driver. Upgrading the driver to the version provided by LibreELEC may help! To do this, download the BCM4345C0.hcd, brcmfmac43455-sdio.bin, and brcmfmac43455-sdio.txt from the libreELEC repositories and place them in the same location as your previous firmware (`/lib/firmware/brmc/`). Then rename brcmfmac43455-sdio.{txt,bin} as `brcmfmac43455-sdio.pine64,pinenote-v1.2.{txt,bin}`. If this doesn't help, ask about it in the matrix chat!
Autoconnect to your Bluetooth devices
This bluetooth-autoconnect project may help.
Preliminary fix for stuttering bluetooth audio
Following a fix used for the Quartz Model A (which uses the same SoC as the Pinenote), we can modify the device tree prior to building the kernel to try to mitigate poor Bluetooth audio streaming. (reference: see https://lore.kernel.org/linux-arm-kernel/20220926055435.31284-1-leo@nabam.net/T/)
Steps:
- Open
arch/arm64/boot/dts/rockchip/rk3566-pinenote.dtsi - Go to line 939, "bluetooth", under the "uart1" section
- Edit the two lines that read "device-wake-gpios" and "host-wake-gpios"; you want them to read "device-wakeup-gpios" and "host-wakeup-gpios" respectively
- Add the following line to the end of the bluetooth section (under the vddio-supply line in my .dtsi): "max-speed = <3000000>;"
- Count your zeros, don't forget your punctuation..
Caveats:
This will improve BT audio quality at least when using the AAC codec. In my experience, the quality is more than acceptable, but there are still issues apparent: occasional isolated stutters even on AAC; prohibitively frequent stutters on SBC-XQ remain. Fully resolving BT audio issues might require further changes similar to the one described above, or may alternatively be a matter of audio software settings (e. g., process priority, audio server buffer settings). Investigation ongoing.