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marianosimone / epub-thumbnailer

Script to extract the cover of an epub book and create a thumbnail for it
GNU General Public License v3.0
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Gnome-shell Window manager warnings in Ubuntu Cosmic #23

Closed arky closed 3 years ago

arky commented 5 years ago

epub-thumbnailer (1.0) fails to work on latest Ubuntu. The following logs are seen in syslog:

Feb 13 14:54:56 Think org.gnome.Shell.desktop[3587]: Window manager warning: 0x1c00016 (epub-thumb) appears to be one of the offending windows with a timestamp of 9172827. Working around... Feb 13 14:54:57 Think org.gnome.Shell.desktop[3587]: Window manager warning: 0x1c00016 (epub-thumb) appears to be one of the offending windows with a timestamp of 9172861. Working around...

$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.10 Release: 18.10 Codename: cosmic

$ python --version Python 2.7.15+

$ nautilus --version GNOME nautilus 3.26.4

marianosimone commented 5 years ago

HI @arky, thanks for the report!

Do you have any more information you can share about what's going on? Is the system misbehaving in any way? are thumbnails being created? are there any special conditions that may make this happen (e.g. a directory with many files? a mounted external/over the network filesystem?)

arky commented 5 years ago

@marianosimone

Running the script manually works without any problem but epub thumbnails are being created in nautilus. Is there anyway to debug nautilus plugins?

Thanks!

marianosimone commented 5 years ago

I don't currently have access to a linux machine, so it's a bit hard for me to help you debug this. I think my previous questions still stand (not sure if you missed a not in your last comment): are the thumbnails being created? are there any special conditions that may make this happen (e.g. a directory with many files? a mounted external/over the network filesystem?)

Researching the particular warning, I see that almost always that message comes after another one saying something like: Window manager warning: 0xAAAAAA (#something @ O) appears to be one of the offending windows with a timestamp of XXXXXX. Working around... is that the case for you?

arky commented 5 years ago

@marianosimone Sorry I missed that. It is standard Ubuntu ext4 partition mounted as local filesystem. There aren't many epub files on it. I no longer get the window manager warnings anymore but the epub are not shown in nautilus. Will continue to debug this.

marianosimone commented 5 years ago

Great, thanks for the update.

Seems like the problem is no longer that there are warnings, but that thumbnails are not generated 🤔

It would be interesting to see what check_desktop_env returns: https://github.com/marianosimone/epub-thumbnailer/blob/9fb3a1d6d9c999732258cc910568c17898ff54a6/install.py#L78-L91. That way, we can probably see if the installation process is doing the right thing inferring the system

marianosimone commented 3 years ago

Closing as inactive