Month: January 2025

Solve GPU not detected in Tensorflow 2

Post author By yodi
Post date January 29, 2025
No Comments on Solve GPU not detected in Tensorflow 2

When you running this code, your Nvidia GPU is not detected

python3 -c "import tensorflow as tf; print(tf.config.list_physical_devices('GPU'))"

[]

The solution is

pip install "tensorflow[and-cuda]==2.15.1"

Tags Solve GPU not detected in Tensorflow 2

Ubuntu

Fix headphone bluetooth keep disconnecting Ubuntu

Post author By yodi
Post date January 10, 2025
No Comments on Fix headphone bluetooth keep disconnecting Ubuntu

After applying Pipewire with AAC support in Ubuntu 24.04, I got problem where my Bose QuiteComfort is repeatingly disconnecting. The log keep saying input failed to connect

grep blue /var/log/syslog

I did several things like re-install packages and configure the bluetooth /etc/bluetooth/main.conf with AutoEnable=true and ControllerMode = bredr still not working. Also edit /etc/bluetooth/input.conf with `UserspaceHID=true`.

Turns out this solution at https://knowledgebase.frame.work/ubuntu-bluetooth-S1PGxfho works well!

sudo rm -r /var/lib/bluetooth/
rm ~/.config/pulse/* 
sudo apt reinstall --purge bluez gnome-bluetooth
systemctl restart bluetooth

This will remove your headphones from bluetooth (*reset). Then change your headphones mode into pairing mode.

Then do this to enter the bluetooth terminal

bluetoothctl

Then lets find and pair

power on
scan on
pair Device ID
devices
trust ID

If any notification asking for authorization, then choose “yes”. This is usually causing the problem where paired bluetooth is not authorized. next time its connected, its get problem!

Tags Fix headphone bluetooth keep disconnecting Ubuntu

Ubuntu

Enable AAC A2DP codec Ubuntu 24.04

Post author By yodi
Post date January 5, 2025
No Comments on Enable AAC A2DP codec Ubuntu 24.04

I’m using Bose QuietComfort Ultra and its have capabilities to support multiple codecs. Connecting into Ubuntu, currently its only support for SBC-XQ and SBC. To unlock the lossless compression on AAC in Ubuntu 24.04 we need to do several things

Install pipewire with AAC patch
Switch from PulseAudio to Pipewire
Enable it from the sound configuration

Lets do it

First, enable this PPA https://launchpad.net/%7Eaglasgall/+archive/ubuntu/pipewire-extra-bt-codecs

sudo add-apt-repository ppa:aglasgall/pipewire-extra-bt-codecs
sudo apt update

Then, re-install pipewire

sudo apt remove pulseaudio-module-bluetooth

sudo apt install --reinstall pipewire-audio-client-libraries libspa-0.2-bluetooth libspa-0.2-jack pulseaudio-utils

Next, we configure it

sudo apt install pipewire-audio-client-libraries
sudo apt install pipewire-media-session- wireplumber
systemctl --user --now enable wireplumber.service

sudo apt install libldacbt-{abr,enc}2 libspa-0.2-bluetooth pulseaudio-module-bluetooth-

sudo cp /usr/share/doc/pipewire/examples/ld.so.conf.d/pipewire-jack-*.conf /etc/ld.so.conf.d/

sudo ldconfig

Follow the PPA gist : https://gist.github.com/the-spyke/2de98b22ff4f978ebf0650c90e82027e#gistcomment-4320194

Now enable and verify

systemctl --user --now enable wireplumber.service
pactl info

Server String: /run/user/1000/pulse/native
Library Protocol Version: 35
Server Protocol Version: 35
....
Server Name: PulseAudio (on PipeWire 1.0.5) <------ HERE
Server Version: 15.0.0
Default Sample Specification: float32le 2ch 48000Hz
Default Channel Map: front-left,front-right
Default Sink: bluez_output.AC_BF_71_CF_15_96.1
Default Source: alsa_input.usb-

If Bluetooth re-connection has problem like its rejected or stop working after connected at fresh start, this is the solution

First un-pair the device then

sudo systemctl stop bluetooth
sudo rm -rf /var/lib/bluetooth/*
sudo systemctl start bluetooth
sudo reboot

Pair it again. Voila Done!

Tags Enable AAC A2DP codec Ubuntu 24.04

Tensorflow

Solve TF-TRT Warning: Could not find TensorRT

Post author By yodi
Post date January 5, 2025
No Comments on Solve TF-TRT Warning: Could not find TensorRT

Installing TensorRT is tricky and shall be matched with the version of tensorflow. This is how you do it. First check the required version

python3 -c "import tensorflow.compiler as tf_cc; \
print(tf_cc.tf2tensorrt._pywrap_py_utils.get_linked_tensorrt_version())"

And then the result

2025-01-05 16:30:38.552990: I tensorflow/core/util/port.cc:113] oneDNN custom operations are on. You may see slightly different numerical results due to floating-point round-off errors from different computation orders. To turn them off, set the environment variable `TF_ENABLE_ONEDNN_OPTS=0`.
2025-01-05 16:30:38.576738: E external/local_xla/xla/stream_executor/cuda/cuda_dnn.cc:9261] Unable to register cuDNN factory: Attempting to register factory for plugin cuDNN when one has already been registered
2025-01-05 16:30:38.576767: E external/local_xla/xla/stream_executor/cuda/cuda_fft.cc:607] Unable to register cuFFT factory: Attempting to register factory for plugin cuFFT when one has already been registered
2025-01-05 16:30:38.577423: E external/local_xla/xla/stream_executor/cuda/cuda_blas.cc:1515] Unable to register cuBLAS factory: Attempting to register factory for plugin cuBLAS when one has already been registered
2025-01-05 16:30:38.581769: I tensorflow/core/platform/cpu_feature_guard.cc:182] This TensorFlow binary is optimized to use available CPU instructions in performance-critical operations.
To enable the following instructions: AVX2 AVX512F AVX512_VNNI FMA, in other operations, rebuild TensorFlow with the appropriate compiler flags.
2025-01-05 16:30:39.023446: W tensorflow/compiler/tf2tensorrt/utils/py_utils.cc:38] TF-TRT Warning: Could not find TensorRT
(8, 6, 1)

This showing result for my tensorflow version, the tensor rt version is “(8.6.1)”. Next, go download tensorrt version eg: https://developer.nvidia.com/nvidia-tensorrt-8x-download

Extract it and go to “tensorrt/python” folder. Since i’m using mamba, I will go to my environment and install the tensor wheel packages based on my python version

(tf) ➜  python ls
tensorrt-8.6.1-cp310-none-linux_x86_64.whl           tensorrt_dispatch-8.6.1-cp37-none-linux_x86_64.whl
tensorrt-8.6.1-cp311-none-linux_x86_64.whl           tensorrt_dispatch-8.6.1-cp38-none-linux_x86_64.whl
tensorrt-8.6.1-cp36-none-linux_x86_64.whl            tensorrt_dispatch-8.6.1-cp39-none-linux_x86_64.whl
tensorrt-8.6.1-cp37-none-linux_x86_64.whl            tensorrt_lean-8.6.1-cp310-none-linux_x86_64.whl
tensorrt-8.6.1-cp38-none-linux_x86_64.whl            tensorrt_lean-8.6.1-cp311-none-linux_x86_64.whl
tensorrt-8.6.1-cp39-none-linux_x86_64.whl            tensorrt_lean-8.6.1-cp36-none-linux_x86_64.whl
tensorrt_dispatch-8.6.1-cp310-none-linux_x86_64.whl  tensorrt_lean-8.6.1-cp37-none-linux_x86_64.whl
tensorrt_dispatch-8.6.1-cp311-none-linux_x86_64.whl  tensorrt_lean-8.6.1-cp38-none-linux_x86_64.whl
tensorrt_dispatch-8.6.1-cp36-none-linux_x86_64.whl   tensorrt_lean-8.6.1-cp39-none-linux_x86_64.whl

And I installed

pip install tensorrt-8.6.1-cp311-none-linux_x86_64.whl

Done, now your tensor rt warning is gone!

If you are looking for Ubuntu 24.04 Nvidia deb packages

https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2404/x86_64/

For CUDNN, NUMA and others, you can follow this

https://stackoverflow.com/questions/78894063/how-can-i-resolve-tensorflow-warnings-cudnn-cufft-cublas-and-numa

Tags Solve TF-TRT Warning: Could not find TensorRT

Solve no matches found: tensorflow[and-cuda]

Post author By yodi
Post date January 2, 2025
No Comments on Solve no matches found: tensorflow[and-cuda]

I found that Tensorflow 2.15 under python 3.9 not able to find my GPU. With nvcc already installed and using mamba, the solution is quite easy

python3 -m pip install 'tensorflow[and-cuda]'

pip install 'tensorflow[and-cuda]'

# with version
pip install 'tensorflow[and-cuda]==2.15.1'

Tags no matches found: tensorflow[and-cuda]