[HANDS-ON BUG]unit2:FileNotFoundError: [Errno 2] No such file or directory: 'Xvfb'

[jakezou]

Describe the bug

A clear and concise description of what the bug is.
Please share your notebook link so that we can reproduce the error

Material

• Did you use Google Colab?

If not:

• Your Operating system (OS)
• Version of your OS

[jakezou]

---

FileNotFoundError Traceback (most recent call last)
in <cell line: 4>()
2 from pyvirtualdisplay import Display
3
----> 4 virtual_display = Display(visible=0, size=(1400, 900))
5 virtual_display.start()

5 frames
/usr/lib/python3.10/subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, restore_signals, gid, gids, uid, umask, start_new_session)
1861 if errno_num != 0:
1862 err_msg = os.strerror(errno_num)
-> 1863 raise child_exception_type(errno_num, err_msg, err_filename)
1864 raise child_exception_type(err_msg)
1865

FileNotFoundError: [Errno 2] No such file or directory: 'Xvfb'

[simoninithomas]

Hey there 👋

Thanks for pointing this out it was a bug I thought was resolved last time #275 but I forgot to push the new notebook. It's now done.

I let you try and if it's good for you I'm closing the issue 🤗

[miklewis]

simoninithomas-
I am still encountering exactly the same problem in colab reported by jakezou

[simoninithomas]

@miklewis did you run the notebook and reopen it after for the second part? Xvfb is quite unstable sometime with colab the best solution is to reset the notebook 😩.

[miklewis]

@simoninithomas Thanks for responding so rapidly! I've tried reopening the notebook & resetting the runtime several times but with the same result. The code is intended to set up tensorboard. This was working last fall. # Visualization utils %load_ext tensorboard import sys from tqdm.notebook import trange !pip install tensorboardx gym pyvirtualdisplay !apt-get install -y xvfb python-opengl ffmpeg The last line fails with result appearing when program attempts to initialize a virtual display for tensorboard output # Virtual display from pyvirtualdisplay import Display virtual_display = Display(visible=0, size=(1400, 900)) Error appears as: E: Unable to locate package python-opengl

…

--------------------------------------------------------------------------- FileNotFoundError Traceback (most recent call last) <ipython-input-1-3a106e665c21> <https://localhost:8080/#> in <cell line: 25>() 23 from pyvirtualdisplay import Display 24 ---> 25 virtual_display = Display(visible=0, size=(1400, 900)) /usr/lib/python3.10/subprocess.py <https://localhost:8080/#> in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, restore_signals, gid, gids, uid, umask, start_new_session) 1861 if errno_num != 0: 1862 err_msg = os.strerror(errno_num) -> 1863 raise child_exception_type(errno_num, err_msg, err_filename) 1864 raise child_exception_type(err_msg) 1865 FileNotFoundError: [Errno 2] No such file or directory: 'Xvfb' Which appears to be the same/similar error being reported by @jakezou

On Mon, Aug 28, 2023 at 5:31 AM Thomas Simonini ***@***.***> wrote: @miklewis <https://github.com/miklewis> did you run the notebook and reopen it after for the second part? Xvfb is quite unstable sometime with colab the best solution is to reset the notebook 😩. — Reply to this email directly, view it on GitHub <#381 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQ5NNMSSUXP3BQIBAAD4HTXXRQNDANCNFSM6AAAAAA3IE42VA> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[simoninithomas]

What's the notebook?

[miklewis]

I am sorry for not responding sooner. Xvfb problem was unsatisfyingly resolved by breaking the install into parts replacing: '!apt-get install -y xvfb python-opengl ffmpeg' with '!apt-get install xvfb !apt-get install python-opengl ffmpeg'

…

On Wed, Sep 13, 2023 at 5:18 AM Thomas Simonini ***@***.***> wrote: Closed #381 <#381> as completed. — Reply to this email directly, view it on GitHub <#381 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQ5NNNN6R7SOJRT6WL546DX2F25HANCNFSM6AAAAAA3IE42VA> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[simoninithomas]

Hey there 👋 no problem 😄 I'm adding this to the next update to be more clear on how to install xvfb on different platform (colab, vm, computer)