AttributeError and Lots of crashes...

[JSWolf]

I have one other suggestion. Given that when you run in safe mode, the graphics driver is disabled, try setting the following environement variable.

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"

[MikesBooks]

Originally Posted by JSWolf

I have one other suggestion. Given that when you run in safe mode, the graphics driver is disabled, try setting the following environement variable.

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"

Thanks for the tip! You know what? I think it actually worked!

After setting the flag, and restarting twice (just to make sure), I opened Calibre and it hard crashed after the splash window. So I restarted once more, and so far, it's been stable! I've added 41 books (mix of epub, azw3, and mostly pdf) and no crashes. I edited the publisher tag and no crashes. This is the most stable it's been!

I'm looking at the driver details for my video card (NVIDIA GeForce RTX 4070 Ti) and it was updated 5/20/25 which is pretty much when all of the crashes started! So perhaps that really was the issue? The driver is 576.52 and I updated from 566.36

I'll keep plucking around in the program in debug mode and see if I get any further errors!

One thing though:
Is there an easy way to put my custom stuff back? I have some old backups and things, but I'm not sure what the best/quickest way to doing that is.

Example: Custom Columns (i had a big #subject one) and Custom Icons that showed the rating and what kind of file it was.

Thanks!

[BetterRed]

Originally Posted by JSWolf

I have one other suggestion. Given that when you run in safe mode, the graphics driver is disabled, try setting the following environement variable.

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"

Bookmarked

Because I never update device drivers I always forget this one.

Originally Posted by MikesBooks

. . .

One thing though:
Is there an easy way to put my custom stuff back? I have some old backups and things, but I'm not sure what the best/quickest way to doing that is.

Example: Custom Columns (i had a big #subject one) and Custom Icons that showed the rating and what kind of file it was.

Did you lose the custom column definitions or 'just' the content

As for the column icons, see the WARNING in ==>> restore_database

But running 'calibredb --restore_database -r' wasn't the solution, do you have a backup of the library you can restore?

BR

[MikesBooks]

Originally Posted by BetterRed

Bookmarked

Did you lose the custom column definitions or 'just' the content


BR

So I'm not sure how to answer this, so I'll do my best

Inside the opf file for each book I still see the information, such as price and read_month. But of course, the new database doesn't know what these columns are. If I try and create, say, a #priority one, it doesn't recognize it as the same data from the books opf.

I can easily redo the custom icons, that was no big deal, but I'd really love to recover the custom columns somehow.

Restoring an old db still leads to crashes, and just for the sake of things, i did a hard factory reset/format of the HD, reinstalled windows, and went back to the old drivers.

So far it seems stable with the new metadata.db but I really would like to figure out how to copy the look/feel and customs from the old one to the new.

Is there any way to export/import just that? Or copy it somehow to a new empty database and start fresh?

Thanks!

[JSWolf]

Originally Posted by MikesBooks

So I'm not sure how to answer this, so I'll do my best

Inside the opf file for each book I still see the information, such as price and read_month. But of course, the new database doesn't know what these columns are. If I try and create, say, a #priority one, it doesn't recognize it as the same data from the books opf.

I can easily redo the custom icons, that was no big deal, but I'd really love to recover the custom columns somehow.

Restoring an old db still leads to crashes, and just for the sake of things, i did a hard factory reset/format of the HD, reinstalled windows, and went back to the old drivers.

So far it seems stable with the new metadata.db but I really would like to figure out how to copy the look/feel and customs from the old one to the new.

Is there any way to export/import just that? Or copy it somehow to a new empty database and start fresh?

Thanks!

You can start a new empty library with all of your custom columns. Then you can copy from the current library to the new library. If there are any columns in the current library that are not in the new library, you can decide if you want them or not as you'll get asked which columns you want.

[BetterRed]

Originally Posted by MikesBooks

. . .

Is there any way to export/import just that? Or copy it somehow to a new empty database and start fresh?

Not that I know of, only Kovid would be able to answer definitively.

My 'assumption' has been that the GUI Library manager->Library maintenance->Restore database function

• creates a fresh database as a clone with the same database schema,
• restores the column data from the book folder metadata.opf files
• restores the library specific preferences from the metadata_db_prefs_backup.json file

But I'm wondering if the command line version of restore_database does something less that that - hence the WARNING in the manual.

BR

[kovidgoyal]

restore database restores all the custom columns adn their data as best as it can from those very OPF files.