Remontoir
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Tinker board R2.0 audio problem - hissing, noise
Remontoir replied to dmitrich's topic in General Discussion
We do have exactly the same issue: while using the jack output, some (we have dozen of then in the wild ) Tinkerboard S R.20 are randomly and suddenly (can be hours or days) outputing a white noise sound. We are also using the last TinkerOS linux release (based on debian 10.10). When the problem arises, there is absolutely nothing in the logs. When using a digital output ( either bluetooth or HDMI ) there's no such problem. Maybe a problem related to the DAC ? -
Note: I've been told the above is not the serial number but the PPID (Piece Part Identification). The file /sys/firmware/devicetree/base/chosen/bootargs shows (uboot args) : sdwupdate storagemedia=sd androidboot.storagemedia=sd (...) androidboot.serialno=c3d9b8674f4b94f6 The serial number in the boot arguments is the same than the one in /sys/firmware/devicetree/base/serial-number Question : where does this "serial number" comes from ? In the uboot code as a default value ?
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Well, the answer is : https://github.com/TinkerBoard/TinkerBoard/wiki/Developer-Guide#how-to-get-the-sn Not the same number which is on the box's sticker but it will do.
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We made disk-images of a modified TinkerOS for mass deployement. This is for a Tinkerboard S R2.0. I need the serial-number to identify the device. I read /sys/firmware/devicetree/base/serial-number The problem is that I got the exact same serial for a duplicated image on another device ! Also it's not the same as the one on the product box. How can I get the "real" serial using TinkerOS 3.0.11, ideally the serial which is on the box sticker ?
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It's to run an electron app. I managed to make it run with some flags passed to chromium ( something like '--use-gl=egl' ).
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So: someone said this on the now dead tinkerboarding.co.uk : Also, the missing file should be in libgl1-mesa-dri
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Well, adding the same parameters to electron as the one used in /usr/lib/chromium/chromium-wrapper, I can see an improvement. GPU usage is now registering in 'tinker-power-management', but GPU usage is still around 50% for a FHD video. The error in the post above is still present. Here are the aforementioned flags : --use-gl=egl --no-sandbox --gpu-sandbox-start-early --enable-accelerated-video-decode --ignore-gpu-blacklist --ignore-gpu-blocklist AFAII, it's using some userland drivers/decoders for the mali chip ?
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Using Tinker Board S R2.0 Debian 10 V3.0.11 No video acceleration. Xorg log : [ 1941.779] (EE) AIGLX error: dlopen of /usr/lib/arm-linux-gnueabihf/dri/rockchip_dri.so failed (/usr/lib/arm-linux-gnueabihf/dri/rockchip_dri.so: cannot open shared object file: No such file or directory) inxi : Graphics: Device-1: display-subsystem driver: rockchip_drm v: N/A Device-2: rk3288-dw-hdmi driver: dwhdmi_rockchip v: N/A Device-3: malit764 driver: mali v: N/A Display: tty server: X.Org 1.20.4 driver: modesetting resolution: 1920x1080~60Hz OpenGL: renderer: llvmpipe (LLVM 7.0 128 bits) v: 3.3 Mesa 18.3.6