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Old 10-16-2020, 04:27 PM   #31
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The problem was fixed for me with 5.3, but I use a custom swap size.
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Old 10-16-2020, 11:51 PM   #32
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There is another possible, fix. I could have calibre manually shutdown the single instance mutex and listening socket before restart. So then even if the parent process sticks around for an indeterminate time, it wont prevent the child from running.
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Old 10-17-2020, 03:51 AM   #33
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Here is the fix discussed above: https://github.com/kovidgoyal/calibr...8110aa3a645bf7
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Old 10-17-2020, 06:53 AM   #34
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Quote:
Originally Posted by ownedbycats View Post
Can you try installing the portable version of Calibre and trying there? It'll be a completely clean set of configs so that might narrow it down to either "problem with my setup of Calibre" or "problem with my system." (With the caveat that portable is x86 instead of x64.)
Same error message from portable 5.3
Code:
Traceback (most recent call last):
  File "calibre\gui2\main.py", line 573, in main
  File "calibre\gui2\main.py", line 522, in create_listener
  File "multiprocessing\connection.py", line 446, in __init__
  File "multiprocessing\connection.py", line 645, in __init__
  File "multiprocessing\connection.py", line 658, in _new_handle
PermissionError: [WinError 5] Access is denied
.

I just installed the portable, ran it, left everything at default and then typed Ctrl R. This is repeatable.


I'll look at the other issue re paging setup when I have time.
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Old 10-17-2020, 06:54 AM   #35
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Quote:
Originally Posted by kovidgoyal View Post
Does this require a binary release to test or can I run from source?
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Old 10-17-2020, 09:02 AM   #36
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Quote:
Originally Posted by georgemk View Post
Does this require a binary release to test or can I run from source?
You can run from source.
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Old 10-17-2020, 11:04 AM   #37
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Are those with the the problem using custom page file settings - I recall fixing a similar issue on a Windows 7 system (not mine, not calibre) by putting the settings back to the default settings.

BR
Was using custom page file settings. Changed to allow Windows to manage, reboot, checked it was set then tried Calibre again.
And the result, erroring still on Ctrl R.

So no difference between custom or managed.
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Old 10-17-2020, 11:22 AM   #38
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Quote:
Originally Posted by kovidgoyal View Post
You can run from source.
Okay, I have cloned the code from github, setup from source and tested that it was done by adding a "hello world" to __init__.py. Ran debug to ensure that it was using the source and yes it was.

Then ran calibre which showed version "5.3*" in the gui. And nothing changed except the text showing the traceback

Code:
calibre, version 5.3.0
ERROR: Cannot start calibre: <p>calibre is already running.</p><p>calibre may be running in the system tray, in the lower right region of the screen.</p><p>If you are sure it is not running,  try rebooting your computer.

Traceback (most recent call last):
  File "C:\Users\george\github\calibre\src\calibre\gui2\main.py", line 551, in run_main
  File "C:\Users\george\github\calibre\src\calibre\gui2\main.py", line 495, in create_listener
  File "multiprocessing\connection.py", line 446, in __init__
  File "multiprocessing\connection.py", line 645, in __init__
  File "multiprocessing\connection.py", line 658, in _new_handle
PermissionError: [WinError 5] Access is denied
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Old 10-17-2020, 11:26 AM   #39
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@georgemk: And this is after how much time?
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Old 10-17-2020, 11:34 AM   #40
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@georgemk: have you tried booting in safe mode and checking that the problem is still there? Some "security suite" could be gating access to networking based on its own idea of what is proper.
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Old 10-17-2020, 11:35 AM   #41
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From Ctrl R to error box is 4 seconds now.
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Old 10-17-2020, 11:49 AM   #42
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@georgemk: have you tried booting in safe mode and checking that the problem is still there? Some "security suite" could be gating access to networking based on its own idea of what is proper.
And we have a winner here. Booted into safe mode with network and Ctrl R and Ctrl Shift R worked every time. I tried it multiple times without any error.

Booted back into normal Windows mode and error occurs first time of asking.

The security suite in use is just Windows 10 Security, no 3rd party tools installed.

So does anyone have an idea for where I look for a setting to change?
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Old 10-17-2020, 12:00 PM   #43
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It's not even networking, its a local named pipe, must be a pretty aggressive antivirus.
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Old 10-17-2020, 12:19 PM   #44
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I've found a bit of a solution or a further problem depending on your point of view.

I've uninstall Calibre and then installed it again form the same MSI I'd used for earlier this week when I upgraded to 5.3.

Now I can restart Calibre from the Plugin dialog restart button. (tested by adding 2 plugins in 2 separate goes) But not by keyboard nor the Preferences
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Old 10-17-2020, 12:32 PM   #45
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If it doesn't fail in safe mode then something that is being started when you boot is causing the problem. Run the Windows Task Manager (start / Windows System / Task Manager or CRTL-ALT-DEL then select Task Manager), click on the Startup tab then look for things that you don't know what they do.

You could also disable some, reboot, then see of the problem is still there. If so, reenable the ones you stopped and disable some others. If not, reenable one by one until the problem comes back.
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