Error launching Nicotine+ #2282

ppom0 · 2022-12-15T18:12:08Z

Hey, first thanks for this wonderful software!
I thought I was dreaming when I switched from SoulseekQt to Nicotine+ :D

Nicotine started to fail at launch.
I don't know why it started to act like this, because it was working on the same setup a few days ago.
I tried rm -r .local/share/nicotine/ .config/nicotine/ but it doesn't help.

Nicotine+ Version: 3.2.6
GTK Version: 3.24.34
Python Version: 3.10.8 (main, Oct 11 2022, 11:35:05) [GCC 11.3.0]
OS: NixOS 22.11
Display: sway 1.7 (wayland)

Type: <class 'BrokenPipeError'>
Value: [Errno 32] Broken pipe
Traceback:   File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/gtkgui/application.py", line 110, in on_activate
    self.core.start(ui_callback=self.frame, network_callback=self.network_callback)
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/pynicotine.py", line 132, in start
    self.shares = Shares(self, config, self.queue, self.network_callback, ui_callback)
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/shares.py", line 510, in __init__
    self.init_shares()
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/shares.py", line 519, in init_shares
    self.rescan_shares(init=True, rescan=rescan_startup)
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/shares.py", line 830, in rescan_shares
    scanner.start()
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/context.py", line 288, in _Popen
    return Popen(process_obj)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/popen_fork.py", line 16, in __init__
    util._flush_std_streams()
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/util.py", line 435, in _flush_std_streams
    sys.stdout.flush()

The text was updated successfully, but these errors were encountered:

slook · 2022-12-15T18:25:31Z

What is your installation method @aopom such as ppa, pip or some other repo packaging?

The path to spawned python machine (used by the shares scanner process) is different from where nicotine core is:

/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/
/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10//multiprocessing/

nicotine-plus/pynicotine/shares.py

Line 829 in 562d12d

    
           scanner, scanner_queue = self.build_scanner_process(shared_folders, init, rescan, rebuild)

nicotine-plus/pynicotine/shares.py

Lines 745 to 755 in 562d12d

    
           def build_scanner_process(self, shared_folders=None, init=False, rescan=True, rebuild=False): 
        
               import multiprocessing 
        
               # Frozen binaries only support fork (if not on Windows) 
        
               if sys.platform != "win32" and getattr(sys, 'frozen', False): 
        
                   start_method = "fork" 
        
               else: 
        
                   start_method = "spawn" 
        
               multiprocessing.set_start_method(start_method, force=True)

nicotine-plus/pynicotine/shares.py

Lines 767 to 768 in 562d12d

    
           scanner = multiprocessing.Process(target=scanner.run) 
        
           scanner.daemon = True

nicotine-plus/pynicotine/shares.py

Line 830 in 562d12d

scanner.start()

The crash is encountered at the same point as in #1843

Type: <class 'BrokenPipeError'>
Value: [Errno 32] Broken pipe

ppom0 · 2022-12-15T21:12:43Z

It's nixpkgs/NixOS packaging (source here). I should maybe open an issue there first.

slook · 2022-12-16T17:18:32Z

start_method = "fork"

Would it work if this was changed to "spawn" in the case of a BrokenPipeError exception?

https://docs.python.org/3.8/library/multiprocessing.html#multiprocessing.set_start_method
"Note that this should be called at most once, and it should be protected inside the if name == 'main' clause of the main module."

Should we run a sort "power on self test" of multiprocessing when launching nicotine and implement the frozen case check to do set_start_method() in there instead?

mathiascode · 2022-12-17T11:56:59Z

@slook Both start methods call _flush_std_streams when initializing, so it doesn't make any difference.

@aopom How are you starting Nicotine+?

slook · 2022-12-17T15:02:22Z

I thought it might depend upon if the process's stdout gets attached onto an inaccessible execution environment.

ppom0 · 2022-12-19T16:52:13Z

@mathiascode I tried starting it in a terminal (alacritty), in a tmux session in alacritty, and with my command launcher (wofi). Both alacritty and wofi are started by the wayland server (sway). tmux is set to inherit from wayland environment variables too (SWAYSOCK and WAYLAND_DISPLAY). I also just tried running it directly from sway (swaymsg exec nicotine)

mathiascode · 2022-12-19T17:04:50Z

I'm assuming you see log messages from Nicotine+ in the terminal?

ppom0 · 2022-12-19T20:03:29Z

There are only GTK warnings due to my GTK theme. I just checked, changing the theme removes those warnings and Nicotine still crashes.
The logs I pasted are shown by a GUI:

slook · 2022-12-19T21:10:38Z

Does the same thing happen if you run Nicotine+ from a local Git folder?

ppom0 · 2022-12-20T21:42:43Z

I built it with the code from the last commit and I have the same issue :/

mathiascode · 2022-12-20T22:50:41Z

Since there's no log output in the terminal, it would seem like stdout is broken in the main process too on your system.

To verify if only Nicotine+ is affected, could you run the following Python script?

import sys
print("test")
sys.stdout.flush()

Also, could you remove these lines and see if anything changes?

nicotine-plus/pynicotine/__init__.py

Lines 118 to 120 in ff3ca17

    
           # Always use UTF-8 for print() 
        
           if sys.stdout is not None: 
        
               sys.stdout = io.TextIOWrapper(sys.stdout.detach(), encoding="utf-8", line_buffering=True)

ppom0 · 2022-12-20T23:16:02Z

With this override removed, I get the exact same error :/

Traceback:   File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/gtkgui/application.py", line 110, in on_activate
    self.core.start(ui_callback=self.frame, network_callback=self.network_callback)
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/pynicotine.py", line 132, in start
    self.shares = Shares(self, config, self.queue, self.network_callback, ui_callback)
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/shares.py", line 510, in __init__
    self.init_shares()
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/shares.py", line 519, in init_shares
    self.rescan_shares(init=True, rescan=rescan_startup)
  File "/nix/store/ax1br9c00lm3xjqmfwrm9inqr8xdhyb5-nicotine-plus-3.2.6/lib/python3.10/site-packages/pynicotine/shares.py", line 830, in rescan_shares
    scanner.start()
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/context.py", line 288, in _Popen
    return Popen(process_obj)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/popen_fork.py", line 16, in __init__
    util._flush_std_streams()
  File "/nix/store/zdba9frlxj2ba8ca095win3nphsiiqhb-python3-3.10.8/lib/python3.10/multiprocessing/util.py", line 435, in _flush_std_streams
    sys.stdout.flush()

mathiascode · 2022-12-20T23:49:37Z

What about the Python script in my last comment?

ppom0 · 2022-12-21T12:33:48Z

Yeah sorry, it works fine. Prints test and no exception throwned.

mathiascode · 2022-12-21T14:28:41Z

Is there any difference with the following commands?
nicotine --rescan
nicotine --headless

ppom0 · 2022-12-21T16:45:10Z

nicotine --headless seems to work fine:

$ nicotine --headless
[2022-12-21 17:42:36] Loading Python 3.10.8 (main, Oct 11 2022, 11:35:05) [GCC 11.3.0]
[2022-12-21 17:42:36] Loading Nicotine+ 3.2.6
[2022-12-21 17:42:36] Loading plugin system
[2022-12-21 17:42:36] The range you specified for client connection ports was 2234-2239, but none of these were usable. Increase and/or move the range and restart Nicotine+.
[2022-12-21 17:42:36] Rescanning shares…
[2022-12-21 17:42:36] 0 folders found before rescan, rebuilding…
[2022-12-21 17:42:37] UPnP: Failed to forward external port None: UPnP is not available on this network

nicotine --rebuild as well:

$ nicotine --rebuild
[2022-12-21 17:43:48] Rescanning shares…
[2022-12-21 17:43:48] 0 folders found before rescan, rebuilding…

No GUI is spawning.

Apart from this, nicotine -s throws the same error.

hyunlee1o · 2022-12-21T22:44:08Z

I got a similar error. It works when launched from terminal but not from desktop launcher

Nicotine+ Version: 3.3.0.dev4
GTK Version: 3.24.35
Python Version: 3.10.9 (linux)

Type: <class 'BrokenPipeError'>
Value: [Errno 32] Tubería rota
Traceback:   File "/usr/lib/python3/dist-packages/pynicotine/gtkgui/application.py", line 880, in on_activate
    core.start()
  File "/usr/lib/python3/dist-packages/pynicotine/core.py", line 200, in start
    events.emit("start")
  File "/usr/lib/python3/dist-packages/pynicotine/events.py", line 215, in emit
    function(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/pynicotine/shares.py", line 569, in _start
    self.rescan_shares(init=True, rescan=rescan_startup)
  File "/usr/lib/python3/dist-packages/pynicotine/shares.py", line 876, in rescan_shares
    scanner.start()
  File "/usr/lib/python3.10/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
  File "/usr/lib/python3.10/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "/usr/lib/python3.10/multiprocessing/context.py", line 288, in _Popen
    return Popen(process_obj)
  File "/usr/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/usr/lib/python3.10/multiprocessing/popen_fork.py", line 16, in __init__
    util._flush_std_streams()
  File "/usr/lib/python3.10/multiprocessing/util.py", line 435, in _flush_std_streams
    sys.stdout.flush()

slook · 2022-12-22T09:00:03Z

What is your OS distro, and which method of installation @hyunlee1o ?

hyunlee1o · 2022-12-22T09:43:09Z

Linux, debian testing. El jue., 22 dic. 2022 10:00 a. m., slook ***@***.***> escribió:

…

What is your OS @hyunlee1o <https://github.com/hyunlee1o> ? — Reply to this email directly, view it on GitHub <#2282 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACCL2RHTHJMCH6GIBN2GPJ3WOQKB3ANCNFSM6AAAAAATAAZJWQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

mathiascode · 2022-12-22T11:30:49Z

Related issues:
#1965
#1978

mathiascode · 2022-12-27T17:41:58Z

@hyunlee1o Which desktop environment are you using? I can't reproduce the issue with a default Debian Testing installation (GNOME).

hyunlee1o · 2022-12-27T17:44:24Z

i3-wm El mar., 27 dic. 2022 6:42 p. m., Mat ***@***.***> escribió:

…

@hyunlee1o <https://github.com/hyunlee1o> Which desktop environment are you using? I can't reproduce the issue with a default Debian Testing installation (GNOME). — Reply to this email directly, view it on GitHub <#2282 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACCL2RBJC6ZDTULJ4WTJ2STWPMS7BANCNFSM6AAAAAATAAZJWQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

mathiascode · 2022-12-31T16:51:45Z

I managed to reproduce the issue. Run this command in a terminal:
nicotine |:

hyunlee1o · 2022-12-31T17:15:01Z

Yeah, it crashes in terminal :3

Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pynicotine/gtkgui/application.py", line 884, in on_activate
    core.start()
  File "/usr/lib/python3/dist-packages/pynicotine/core.py", line 200, in start
    events.emit("start")
  File "/usr/lib/python3/dist-packages/pynicotine/events.py", line 215, in emit
    function(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/pynicotine/shares.py", line 569, in _start
    self.rescan_shares(init=True, rescan=rescan_startup)
  File "/usr/lib/python3/dist-packages/pynicotine/shares.py", line 876, in rescan_shares
    scanner.start()
  File "/usr/lib/python3.10/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
  File "/usr/lib/python3.10/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "/usr/lib/python3.10/multiprocessing/context.py", line 288, in _Popen
    return Popen(process_obj)
  File "/usr/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/usr/lib/python3.10/multiprocessing/popen_fork.py", line 16, in __init__
    util._flush_std_streams()
  File "/usr/lib/python3.10/multiprocessing/util.py", line 435, in _flush_std_streams
    sys.stdout.flush()
BrokenPipeError: [Errno 32] Tubería rota

Original exception was:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pynicotine/gtkgui/application.py", line 884, in on_activate
    core.start()
  File "/usr/lib/python3/dist-packages/pynicotine/core.py", line 200, in start
    events.emit("start")
  File "/usr/lib/python3/dist-packages/pynicotine/events.py", line 215, in emit
    function(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/pynicotine/shares.py", line 569, in _start
    self.rescan_shares(init=True, rescan=rescan_startup)
  File "/usr/lib/python3/dist-packages/pynicotine/shares.py", line 876, in rescan_shares
    scanner.start()
  File "/usr/lib/python3.10/multiprocessing/process.py", line 121, in start
    self._popen = self._Popen(self)
  File "/usr/lib/python3.10/multiprocessing/context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "/usr/lib/python3.10/multiprocessing/context.py", line 288, in _Popen
    return Popen(process_obj)
  File "/usr/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 32, in __init__
    super().__init__(process_obj)
  File "/usr/lib/python3.10/multiprocessing/popen_fork.py", line 16, in __init__
    util._flush_std_streams()
  File "/usr/lib/python3.10/multiprocessing/util.py", line 435, in _flush_std_streams
    sys.stdout.flush()
BrokenPipeError: [Errno 32] Tubería rota
Exception ignored in: <_io.TextIOWrapper name='<stdout>' encoding='utf-8'>
BrokenPipeError: [Errno 32] Tubería rota
Fatal Python error: _enter_buffered_busy: could not acquire lock for <_io.BufferedReader name='<stdin>'> at interpreter shutdown, possibly due to daemon threads
Python runtime state: finalizing (tstate=0x0000557d5e372870)

Current thread 0x00007f21d427f040 (most recent call first):
  <no Python frame>
fish: Process 305934, 'nicotine' from job 1, 'nicotine |:' terminated by signal SIGABRT (Abort)

Fixes #2282

mathiascode · 2022-12-31T18:33:31Z

Could you test the 3.2.x branch and see if the issue is resolved for you?
https://github.com/nicotine-plus/nicotine-plus/blob/3.2.x/doc/TESTING.md

hyunlee1o · 2022-12-31T18:41:41Z

I tested and it run without issue

ppom0 · 2023-01-02T14:21:36Z

Fixes the bug for me too! Thanks a lot :D

ppom0 · 2023-01-02T14:38:35Z

Hum, It worked one time, then I ran the older version by mistake and now I have the issue again with the last 3.2.x version, even after rm -r .local/share/nicotine/ .config/nicotine/

mathiascode · 2023-01-02T16:26:36Z

Hum, It worked one time, then I ran the older version by mistake and now I have the issue again with the last 3.2.x version, even after rm -r .local/share/nicotine/ .config/nicotine/

That doesn't make much sense. Can you re-download the latest 3.2.x development build, to ensure that it's actually the latest. If nothing changes. can you paste the error?

slook · 2023-01-07T00:19:34Z

@aopom @hyunlee1o The latest stable release includes the fix, please check everything is okay with it on your systems. Thank you.

Nicotine+ 3.2.8 released on January 6th 2023 https://nicotine-plus.org/doc/DOWNLOADS

hyunlee1o · 2023-01-08T00:12:42Z

Working, thanks for your time and effort.

ppom0 · 2023-01-10T20:16:51Z

Yes it works!
Thank a lot

ppom0 mentioned this issue Dec 15, 2022

nicotine-plus fail at start NixOS/nixpkgs#206303

Closed

slook mentioned this issue Dec 16, 2022

Nicotine+ can't be launched from network drive on Windows #1843

Open

mathiascode added the bug label Dec 27, 2022

mathiascode closed this as completed in 620b6ba Dec 31, 2022

mathiascode added a commit that referenced this issue Dec 31, 2022

Redirect stdout to /dev/null if it's no longer available

1ed4191

Fixes #2282

Derkades mentioned this issue Jan 19, 2023

Flatpak missing ipcountrydb.bin #2328

Closed

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Error launching Nicotine+ #2282

Error launching Nicotine+ #2282

ppom0 commented Dec 15, 2022 •

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ppom0 commented Jan 10, 2023

Error launching Nicotine+ #2282

Error launching Nicotine+ #2282

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