Image generation hangs on windows 10

[ammaar8]

Hey, I'm trying to convert figures into static images but it refuses to work on windows 10. I am using this script for testing -

import plotly.graph_objects as go
import numpy as np
import plotly.io as pio
np.random.seed(1)

N = 100
x = np.random.rand(N)
y = np.random.rand(N)
colors = np.random.rand(N)
sz = np.random.rand(N) * 30

fig = go.Figure()
fig.add_trace(go.Scatter(
    x=x,
    y=y,
    mode="markers",
    marker=go.scatter.Marker(
        size=sz,
        color=colors,
        opacity=0.6,
        colorscale="Viridis"
    )
))

fig.write_image('test.png')
fig.show()

It just hangs forever. I tried with both kaleido and orca, same thing. I tried to find out where it was hanging using pycharm and it seems to be this line -

Kaleido/repos/kaleido/py/kaleido/scopes/base.py

Line 192 in 6a46eca

startup_response_string = self._proc.stdout.readline().decode('utf-8')

If you require anymore info let me know.

Having the same issue 😢.

[ammaar8]

Having the same issue 😢.

If it's any help, I am now using wsl2 with ubuntu 20 for this. If it doesn't work on localhost, you can host it on 0.0.0.0 and view it on the wsl's ip. Hoping this gets fixed soon since running it on wsl is a lot slower but have no other option.

[jonmmease]

If possible, it would be helpful to know if the instructions in this comment produce any additional logging info: #36 (comment)

[ammaar8]

If possible, it would be helpful to know if the instructions in this comment produce any additional logging info: #36 (comment)

I tried doing it in cmd and jupyter notebook but it won't interrupt using ctrl+c/interrupt kernel. Any other ideas?

[jonmmease]

Ok, thanks for giving that a try. The next idea is to try to run the kaleido executable CMD, without python.

From python, run this to print out the (long) kaleido launch command

import plotly.io as pio
print(' '.join(pio.kaleido.scope._build_proc_args()))

Then run this from the CMD prompt. If successful, it would print out

{"code": 0, "message": "Success", "result": null, "version": "0.2.1"}

along with some benign warnings. But if it hangs here, it would be great to record what is logged.

[ammaar8]

[0922/185509.685:WARNING:resource_bundle.cc(405)] locale_file_path.empty() for locale
[0922/185509.743:WARNING:headless_browser_main_parts.cc(83)] Cannot create Pref Service with no user data dir.
{"code": 0, "message": "Success", "result": null, "version": "0.2.1"}
[0922/185510.510:ERROR:gpu_init.cc(430)] Passthrough is not supported, GL is swiftshader

Sorry about the late reply, this is what I get.

[leeTimothy]

+1 for similar issue with similar output as above

[jonmmease]

Ok, thanks @ammaar8 and @leeTimothy. That's helpful.

It's possible that the key error is

[0922/185510.510:ERROR:gpu_init.cc(430)] Passthrough is not supported, GL is swiftshader

Although the {"code: 0,...} line indicates that kaleido did launch successfully.

After running that first command, could you try pasting the following content into the console and pressing Enter:

{"data":{"layout": {}}, "format":"svg"}

This is an actual image export request, and if successful would print out an SVG string. Again, it would be helpful to know if this prints out any warnings or errors, or if it hangs.

Thanks!

[leeTimothy]

this might be where the behaviour im experiencing might deviate from @ammaar8

although running the output of

import plotly.io as pio
print(' '.join(pio.kaleido.scope._build_proc_args()))

provides a very similar trace like ammaar

[0924/131936.214:WARNING:resource_bundle.cc(405)] locale_file_path.empty() for locale 
[0924/131936.234:WARNING:headless_browser_main_parts.cc(83)] Cannot create Pref Service with no user data dir.
{"code": 0, "message": "Success", "result": null, "version": "0.2.1"}
[0924/131936.291:ERROR:gpu_init.cc(430)] Passthrough is not supported, GL is swiftshader

the command itself never runs to completion and just hangs there.

if the behaviour deviates - please let me know if you want me to raise this separately.

cheers

[jonmmease]

@leeTimothy, the first command is intended to stay running and wait for image export requests. Did you try pasting the JSON snippet I described above and hitting enter? It would be good to know if this hangs, or if any additional info is logged.
Thanks!

[leeTimothy]

Ah apologies!

Please see below.

{"data":{"layout": {}}, "format":"svg"}
{"code": 1, "message": "Failed to serialize document: Uncaught", "result": null, "version": "0.2.1"}

[jonmmease]

Ok, thanks @leeTimothy.

Here are a couple of experiments to try. The long kaleido command has a bunch of chromium flags. e.g. one of them is --disable-gpu.

1. Try deleting the --disable-gpu flag, and performing the test process again.
2. Try adding the --disable-webgl flag.

If you, or anyone else, is interested in experimenting more with chromium options. Here's a giant list of the available chromium flags: https://peter.sh/experiments/chromium-command-line-switches/.

[leeTimothy]

Hey Jon,

Apols for the late response - believe I may have narrowed it down slightly more.
Issue appears to be specific to Windows machines as haven't seen any other reports on the issuse for anything else.

I've got access to 3 different W10 machines, 2 Running OS Build 19043+ both of which Kaleido doesn't currently work.
The W10 Machine running on OS Build 19041 is still able to properly export static images.

@ammaar8 @guilhermebarrett can you confirm what OS build of W10 you're currently running?

[ammaar8]

Hey @leeTimothy,

Sorry for the late reply, I'm on 19043.1237 like you are!

[jonmmease]

That version info helps a lot, thanks for investigating @leeTimothy and @ammaar8