# Problems and Solutions in Lambda Stack ## Problem installing lambda stack: Failed to fetch python3-tensorflow-cuda **User:** Leon **Date:** Jan 27, 2021 Hello, just try to rerun the command, that happens sometimes. Just rerun the command make sure your device has a stable internet connection. **TLDR:** Rerun install command. --- ## Cannot apt --fix, potentially conflicting packages **User:** Leon **Date:** Jan 27, 2021 Please try this: `sudo apt-get update && sudo apt-get dist-upgrade`. This should upgrade it properly then restart via: `sudo reboot` and it should work perfectly fine again. --- ## OpenCV in lambda-stack - non-gpu? **User:** Leon **Date:** Jan 27, 2021 OpenCV GPU has to be installed manually and is to my knowledge not included in Lambda Stack. Here’s an article explaining it: [How to install OpenCV 4.2.0 with CUDA 10.1 on Ubuntu 20.04 LTS (Focal Fossa) | by Shitty Bots | Medium](https://medium.com/@sb.jaduniv/how-to-install-opencv-4-2-0-with-cuda-10-1-on-ubuntu-20-04-lts-focal-fossa-bdc034109df3) --- ## Unable to uninstall tensorflow **User:** Leon **Date:** Sep 6, 2019 Lambda stack installs the packages with apt. You can uninstall with `sudo apt autoremove python-tensorflow` --- ## Import numba fails **User:** Leon **Date:** Jul 31, 2019 For updates, do `sudo apt install python3-numba` or if you want to keep the version you can install it via `pip3 install numba`. Best, Leon --- ## Unable to enter desktop **User:** Leon **Date:** Jun 12, 2019 Reinstall the Nvidia driver and then install the Ubuntu desktop again. Remember to disable nouveau in the bootloader. Best, Leon --- ## The TensorFlow library was compiled to use AVX2 instructions, but these aren't available on your machine **User:** Leon **Date:** May 17, 2019 Your CPU just doesn't support AVX2. You have to uninstall the tensorflow CPU version and install tensorflow-gpu. That should probably work. --- ## Lambda-tensorflow-benchmark on a tensorbook? **User:** Leon **Date:** May 17, 2019 No actually no reason for that. You didn’t really give much information about what you did run. Maybe some more information would be helpful. --- ## Tensorbook - Ubuntu 18 No sound **User:** Leon **Date:** Mar 8, 2019 Try `sudo ubuntu-drivers autoinstall` --- ## Upgrade Jupyter 4.4 to latest **User:** Leon **Date:** Mar 7, 2019 Do `sudo install python3-jupyter` --- ## Item-based Recommendation **User:** Leon **Date:** Mar 4, 2019 I don't have one. But if you want to, you can join our discord server where we share a lot of information about Machine Learning Research. [Lambda Deep Learning Community](https://discord.gg/UYP93sN) --- ## Stuck at "Configuring libcudnn7" - can't accept the license (resolved) **User:** Leon **Date:** Mar 4, 2019 Currently that’s a cuDNN problem. Hopefully, they fix it. Best, Leon --- ## Tensorbook reboot and show black **User:** Leon **Date:** Mar 4, 2019 Can you enter tty with `CTRL+ALT+F3`? --- ## Lambda Tensorbook Specifications **User:** Leon **Date:** Feb 14, 2019 Yes activate it in the Boom and check in Ubuntu under Settings then Devices and then Thunderbolt. Check that full access is checked there. --- ## Stucked at ubuntu logo **User:** Leon **Date:** Feb 12, 2019 Type exit and then go to the main grub menu and start ubuntu. If that doesn't work, go to advanced options and select the first option then. In case it still doesn’t work. Pls message me on Discord. My name is Leon Nowsden on there and I am online 24/7. [Lambda Deep Learning Community](https://discord.gg/acZQRrk) --- ## Desktop windows 10 Cuda issue **User:** Leon **Date:** Feb 9, 2019 Then I am sorry. I don't have an idea right now. Leon --- ## Downgrade to Cuda 9 **User:** Leon **Date:** Feb 6, 2019 Just install CUDA9 from the CUDA archive. Then reboot and delete CUDA10 from path. --- ## Experiencing some technical issues with my new TensorBook **User:** Leon **Date:** Dec 2, 2018 That’s a common problem. I had that too. But since the last Ubuntu update it was solved. Just update Ubuntu 18.04 as far as possible. --- ## Accessing lambda stack libraries from Tensorflow **User:** Leon **Date:** Dec 2, 2018 Probably something went wrong with Pycharm. Try: `python3 your_file_name_in_the_correct_dir.py` --- ## I am trying lambda-stack on my tensorbook and it says unable to locate package lambda-stack **User:** Leon **Date:** Dec 2, 2018 Something went wrong when you added the repo. Just do this: ```bash LAMBDA_REPO=$(mktemp) && \ wget -O${LAMBDA_REPO} https://lambdalabs.com/static/misc/lambda-stack-repo.deb && \ sudo dpkg -i ${LAMBDA_REPO} && rm -f ${LAMBDA_REPO} && \ sudo apt-get update && sudo apt-get install -y lambda-stack-cuda ``` --- ## Tensorbook Max fan issues and battery usage **User:** Leon **Date:** Nov 7, 2018 Can you try htop and then read out the CPU usage. and then kill the process. --- ## Reg: Installing Suse Enterprise Linux / Windows 10 via (VM) **User:** Leon **Date:** Nov 7, 2018 Nah it works fine with a KVM. --- ## 404 Not Found [IP: 52.218.209.35 80] **User:** Leon **Date:** Nov 7, 2018 Yes it worked fine [@sabalaba](https://deeptalk.lambda.ai/u/sabalaba) --- ## Using the Stack on Other OS's **User:** Leon **Date:** Nov 6, 2018 Sure just try it. I don't experiment any more. --- ## Using the Stack on Other OS's **User:** Leon **Date:** Nov 6, 2018 No it’s just Ubuntu with Xfce installed on top. **User:** Leon **Date:** Nov 6, 2018 Yes, Ubuntu with xfce works fine but I always had problems with other distros.