• some images black in Shotwell desktop slideshow

    From wAYNE@21:1/5 to All on Wed Sep 21 14:12:09 2022
    Been using Shotwell as control for desktop slideshow. Once every 3 min,
    image changes. I noticed today, however, that after I deleted some
    existing images from the background folder and then reuploaded to
    Shotwell, it's like it's still trying to display the missing images.
    Even tried copying existing images to a new folder, background1, then
    deleting prior folder and all images from Shotwell and it's still
    showing black occasionally. Any ideas welcome. Perhaps there's a
    Shotwell config cached that I need to delete?

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  • From Sjouke Burry@21:1/5 to wAYNE on Wed Sep 21 23:06:26 2022
    On 21.09.22 20:12, wAYNE wrote:
    Been using Shotwell as control for desktop slideshow. Once every 3 min, image changes. I noticed today, however, that after I deleted some
    existing images from the background folder and then reuploaded to
    Shotwell, it's like it's still trying to display the missing images.
    Even tried copying existing images to a new folder, background1, then deleting prior folder and all images from Shotwell and it's still
    showing black occasionally. Any ideas welcome. Perhaps there's a
    Shotwell config cached that I need to delete?

    I use the slide-show mode of Irfanview,no problems whatsoever.

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  • From Bit Twister@21:1/5 to wAYNE on Wed Sep 21 17:02:39 2022
    On Wed, 21 Sep 2022 14:12:09 -0400, wAYNE wrote:
    Been using Shotwell as control for desktop slideshow. Once every 3 min, image changes. I noticed today, however, that after I deleted some
    existing images from the background folder and then reuploaded to
    Shotwell, it's like it's still trying to display the missing images.
    Even tried copying existing images to a new folder, background1, then deleting prior folder and all images from Shotwell and it's still
    showing black occasionally. Any ideas welcome. Perhaps there's a
    Shotwell config cached that I need to delete?

    I have no experience with Shotwell, but the time I saw the same problem
    with my desktop slideshow and viewer was do to the actual file being
    displayed.

    I would verify my account had full read/execute access/same as files
    which display correctly.

    I was able to find the problem files with a gui file manager which had thunbnails that would not display correctly.

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  • From David Catterall@21:1/5 to Sjouke Burry on Wed Sep 21 22:18:08 2022
    On 21/09/2022 22:06, Sjouke Burry wrote:
    I use the slide-show mode of Irfanview,no problems whatsoever.

    When using MATE, I adapt the script found in /usr/share/backgrounds/cosmos .

    D.

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  • From Paul@21:1/5 to wAYNE on Wed Sep 21 18:37:03 2022
    On 9/21/2022 2:12 PM, wAYNE wrote:
    Been using Shotwell as control for desktop slideshow.  Once every 3 min, image changes.  I noticed today, however, that after I deleted some existing images from the background folder and then reuploaded to Shotwell, it's like it's still trying to
    display the missing images. Even tried copying existing images to a new folder, background1, then deleting prior folder and all images from Shotwell and it's still showing black occasionally.  Any ideas welcome.  Perhaps there's a Shotwell config
    cached that I need to delete?


    /home/wayne/.local/share/shotwell/data/photo.db # sqlite database

    Library: Missing Files # shows thumbnails sitting in the thumbnail directory
    # for files that no longer exist. Hard to say what would
    # happen if the thumbnails got deleted. Probably "anarchy".
    # ~/.cache/shotwell contains thumbnails.
    # The database is the controlling element, in any case.
    # It is worshiped.

    Select files with mouse # Tell the tool which vacant files to deal with
    Orange selection rectangles

    Right-click, "Remove from Library" # Should remove the vacant files from photo.db .
    # Presumably removing their thumbnail as well.

    *******

    sqlite3 /home/wayne/.local/share/shotwell/data/photo.db .dump > photo_database_text.txt

    That will show you the current database contents, and likely,
    what it plans to use for a slideshow. Just a guess.

    The database has a number of "CREATE INDEX" calls near the end. And
    somehow, that's how it tells one thumbnail from another. The thumbnail identifiers don't seem to be stored in a table, that I can see. My understanding
    of databases is very shaky.

    There are fewer thumbnails than photos. I have no idea what that means.
    There are more photos of the .png persuasion, than there are thumbnails.

    The MD5SUM value in the table, is for the master photograph, not for a thumb.

    This appears to be about as much fun as you would expect.

    Paul

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  • From wAYNE@21:1/5 to David Catterall on Thu Sep 22 09:59:06 2022
    On 9/21/22 5:18 PM, David Catterall wrote:
    On 21/09/2022 22:06, Sjouke Burry wrote:
    I use the slide-show mode of Irfanview,no problems whatsoever.

    When using MATE, I adapt the script found in
    /usr/share/backgrounds/cosmos .

    D.


    What is MATE, the Ubuntu repository shows six entries?

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  • From wAYNE@21:1/5 to All on Thu Sep 22 09:48:34 2022
    T24gOS8yMS8yMiAyOjEyIFBNLCB3QVlORSB3cm90ZToNCj4gQmVlbiB1c2luZyBTaG90d2Vs bCBhcyBjb250cm9sIGZvciBkZXNrdG9wIHNsaWRlc2hvdy7CoCBPbmNlIGV2ZXJ5IDMgbWlu LCANCj4gaW1hZ2UgY2hhbmdlcy7CoCBJIG5vdGljZWQgdG9kYXksIGhvd2V2ZXIsIHRoYXQg YWZ0ZXIgSSBkZWxldGVkIHNvbWUgDQo+IGV4aXN0aW5nIGltYWdlcyBmcm9tIHRoZSBiYWNr Z3JvdW5kIGZvbGRlciBhbmQgdGhlbiByZXVwbG9hZGVkIHRvIA0KPiBTaG90d2VsbCwgaXQn cyBsaWtlIGl0J3Mgc3RpbGwgdHJ5aW5nIHRvIGRpc3BsYXkgdGhlIG1pc3NpbmcgaW1hZ2Vz LiANCj4gRXZlbiB0cmllZCBjb3B5aW5nIGV4aXN0aW5nIGltYWdlcyB0byBhIG5ldyBmb2xk ZXIsIGJhY2tncm91bmQxLCB0aGVuIA0KPiBkZWxldGluZyBwcmlvciBmb2xkZXIgYW5kIGFs bCBpbWFnZXMgZnJvbSBTaG90d2VsbCBhbmQgaXQncyBzdGlsbCANCj4gc2hvd2luZyBibGFj ayBvY2Nhc2lvbmFsbHkuwqAgQW55IGlkZWFzIHdlbGNvbWUuwqAgUGVyaGFwcyB0aGVyZSdz IGEgDQo+IFNob3R3ZWxsIGNvbmZpZyBjYWNoZWQgdGhhdCBJIG5lZWQgdG8gZGVsZXRlPw0K PiANCg0KV2hhdCBzZWVtZWQgdG8gc29sdmUgdGhpcyB3YXMgc2ltcGx5IHJlYm9vdGluZy4g IEkgc3VzcGVjdGVkIGl0IG1pZ2h0IA0KYW5kIHRyaWVkIGl0IGFmdGVyIHRoZSBwb3N0LiAg QWxsIGltYWdlcyBkaXNwbGF5aW5nIHdlbGwgbm93LiAgSSBkb24ndCANCmxpa2UgdGhlIHN1 ZGRlbiB0cmFuc2l0aW9ucyBiZXR3ZWVuIHRoZW0sIGJ1dCBJIGNhbiBsaXZlIHdpdGggdGhh dC4NCg==

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  • From wAYNE@21:1/5 to All on Thu Sep 22 09:53:58 2022
    T24gOS8yMS8yMiA1OjA2IFBNLCBTam91a2UgQnVycnkgd3JvdGU6DQo+IE9uIDIxLjA5LjIy IDIwOjEyLCB3QVlORSB3cm90ZToNCj4+IEJlZW4gdXNpbmcgU2hvdHdlbGwgYXMgY29udHJv bCBmb3IgZGVza3RvcCBzbGlkZXNob3cuwqAgT25jZSBldmVyeSAzIG1pbiwNCj4+IGltYWdl IGNoYW5nZXMuwqAgSSBub3RpY2VkIHRvZGF5LCBob3dldmVyLCB0aGF0IGFmdGVyIEkgZGVs ZXRlZCBzb21lDQo+PiBleGlzdGluZyBpbWFnZXMgZnJvbSB0aGUgYmFja2dyb3VuZCBmb2xk ZXIgYW5kIHRoZW4gcmV1cGxvYWRlZCB0bw0KPj4gU2hvdHdlbGwsIGl0J3MgbGlrZSBpdCdz IHN0aWxsIHRyeWluZyB0byBkaXNwbGF5IHRoZSBtaXNzaW5nIGltYWdlcy4NCj4+IEV2ZW4g dHJpZWQgY29weWluZyBleGlzdGluZyBpbWFnZXMgdG8gYSBuZXcgZm9sZGVyLCBiYWNrZ3Jv dW5kMSwgdGhlbg0KPj4gZGVsZXRpbmcgcHJpb3IgZm9sZGVyIGFuZCBhbGwgaW1hZ2VzIGZy b20gU2hvdHdlbGwgYW5kIGl0J3Mgc3RpbGwNCj4+IHNob3dpbmcgYmxhY2sgb2NjYXNpb25h bGx5LsKgIEFueSBpZGVhcyB3ZWxjb21lLsKgIFBlcmhhcHMgdGhlcmUncyBhDQo+PiBTaG90 d2VsbCBjb25maWcgY2FjaGVkIHRoYXQgSSBuZWVkIHRvIGRlbGV0ZT8NCj4+DQo+IEkgdXNl IHRoZSBzbGlkZS1zaG93IG1vZGUgb2YgSXJmYW52aWV3LG5vIHByb2JsZW1zIHdoYXRzb2V2 ZXIuDQoNClRoZSByZXBvc2l0b3J5IHNob3dzIGl0LCBidXQgdW5mb3J0dW5hdGVseSBoYXMg dG8gaGF2ZSBXSU5FPyAgSSB0cmllZCANCm9uZSB3aGVuIEkgd2FzIHJ1bm5pbmcgbXkgcHJp b3IgVWJ1bnR1IHZlcnNpb24gYW5kIGRpZG4ndCBjYXJlIGZvciBpdC4gDQpNb3N0IG9mIHRo ZSBwcm9ncmFtcyBJIHdhbnRlZCB3b3VsZG4ndCBydW4uICBBbHNvLCBkb2Vzbid0IGl0IGlu Y3JlYXNlIA0Kc2VjdXJpdHkgcmlza3Mgc2luY2UsIGFmdGVyIGFsbCwgeW91J3JlIG9wZW5p bmcgdGhlIGRvb3IgdG8gV2luPw0K

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  • From DanS@21:1/5 to wAYNE on Thu Sep 22 16:20:36 2022
    wAYNE <wayne34@no_verizon.net> wrote in
    news:tghp3i$25kta$1@dont-email.me:

    On 9/21/22 2:12 PM, wAYNE wrote:
    Been using Shotwell as control for desktop slideshow. 
    Once every 3 min, image changes.  I noticed today,
    however, that after I deleted some existing images from
    the background folder and then reuploaded to Shotwell,
    it's like it's still trying to display the missing images.
    Even tried copying existing images to a new folder,
    background1, then deleting prior folder and all images
    from Shotwell and it's still showing black occasionally. 
    Any ideas welcome.  Perhaps there's a Shotwell config
    cached that I need to delete?


    What seemed to solve this was simply rebooting. I
    suspected it might and tried it after the post. All images
    displaying well now. I don't like the sudden transitions
    between them, but I can live with that.

    ... the winduhs way of trying to fix something!

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Paul@21:1/5 to wAYNE on Thu Sep 22 13:33:29 2022
    On 9/22/2022 9:48 AM, wAYNE wrote:
    On 9/21/22 2:12 PM, wAYNE wrote:
    Been using Shotwell as control for desktop slideshow.  Once every 3 min, image changes.  I noticed today, however, that after I deleted some existing images from the background folder and then reuploaded to Shotwell, it's like it's still trying to
    display the missing images. Even tried copying existing images to a new folder, background1, then deleting prior folder and all images from Shotwell and it's still showing black occasionally.  Any ideas welcome.  Perhaps there's a Shotwell config
    cached that I need to delete?


    What seemed to solve this was simply rebooting.  I suspected it might and tried it after the post.  All images displaying well now.  I don't like the sudden transitions between them, but I can live with that.

    So you have no files showing in a "Missing Files" folder.

    Paul

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  • From wAYNE@21:1/5 to All on Thu Sep 22 14:05:41 2022
    T24gOS8yMi8yMiAxOjMzIFBNLCBQYXVsIHdyb3RlOg0KPiBPbiA5LzIyLzIwMjIgOTo0OCBB TSwgd0FZTkUgd3JvdGU6DQo+PiBPbiA5LzIxLzIyIDI6MTIgUE0sIHdBWU5FIHdyb3RlOg0K Pj4+IEJlZW4gdXNpbmcgU2hvdHdlbGwgYXMgY29udHJvbCBmb3IgZGVza3RvcCBzbGlkZXNo b3cuwqAgT25jZSBldmVyeSAzIA0KPj4+IG1pbiwgaW1hZ2UgY2hhbmdlcy7CoCBJIG5vdGlj ZWQgdG9kYXksIGhvd2V2ZXIsIHRoYXQgYWZ0ZXIgSSBkZWxldGVkIA0KPj4+IHNvbWUgZXhp c3RpbmcgaW1hZ2VzIGZyb20gdGhlIGJhY2tncm91bmQgZm9sZGVyIGFuZCB0aGVuIHJldXBs b2FkZWQgDQo+Pj4gdG8gU2hvdHdlbGwsIGl0J3MgbGlrZSBpdCdzIHN0aWxsIHRyeWluZyB0 byBkaXNwbGF5IHRoZSBtaXNzaW5nIA0KPj4+IGltYWdlcy4gRXZlbiB0cmllZCBjb3B5aW5n IGV4aXN0aW5nIGltYWdlcyB0byBhIG5ldyBmb2xkZXIsIA0KPj4+IGJhY2tncm91bmQxLCB0 aGVuIGRlbGV0aW5nIHByaW9yIGZvbGRlciBhbmQgYWxsIGltYWdlcyBmcm9tIFNob3R3ZWxs IA0KPj4+IGFuZCBpdCdzIHN0aWxsIHNob3dpbmcgYmxhY2sgb2NjYXNpb25hbGx5LsKgIEFu eSBpZGVhcyB3ZWxjb21lLiAgDQo+Pj4gUGVyaGFwcyB0aGVyZSdzIGEgU2hvdHdlbGwgY29u ZmlnIGNhY2hlZCB0aGF0IEkgbmVlZCB0byBkZWxldGU/DQo+Pj4NCj4+DQo+PiBXaGF0IHNl ZW1lZCB0byBzb2x2ZSB0aGlzIHdhcyBzaW1wbHkgcmVib290aW5nLsKgIEkgc3VzcGVjdGVk IGl0IG1pZ2h0IA0KPj4gYW5kIHRyaWVkIGl0IGFmdGVyIHRoZSBwb3N0LsKgIEFsbCBpbWFn ZXMgZGlzcGxheWluZyB3ZWxsIG5vdy7CoCBJIGRvbid0IA0KPj4gbGlrZSB0aGUgc3VkZGVu IHRyYW5zaXRpb25zIGJldHdlZW4gdGhlbSwgYnV0IEkgY2FuIGxpdmUgd2l0aCB0aGF0Lg0K PiANCj4gU28geW91IGhhdmUgbm8gZmlsZXMgc2hvd2luZyBpbiBhICJNaXNzaW5nIEZpbGVz IiBmb2xkZXIuDQo+IA0KPiAgwqDCoCBQYXVsDQo+IA0KDQpJJ2xsIGNoZWNrIGxhdGVyIHdo ZW4gSSdtIGhvbWUgYW5kIGJhY2sgb24gdGhlIGRlc2t0b3AuDQo=

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  • From mechanic@21:1/5 to DanS on Thu Sep 22 18:45:50 2022
    On Thu, 22 Sep 2022 16:20:36 +0000, DanS wrote:

    What seemed to solve this was simply rebooting. I
    suspected it might and tried it after the post. All images
    displaying well now. I don't like the sudden transitions
    between them, but I can live with that.

    ... the winduhs way of trying to fix something!

    Strangely effective in many cases.

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From David Catterall@21:1/5 to wAYNE on Thu Sep 22 19:45:58 2022
    On 22/09/2022 14:59, wAYNE wrote:
    What is MATE, the Ubuntu repository shows six entries?

    MATE is one of the Desktop Environments available for Ubuntu. Other
    possible `skins' for Ubuntu include LXQt and Xfce.

    I do not use these others but I do use MATE, but actually on a Mint system.

    With kind regards,
    David in Co Longford

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  • From wAYNE@21:1/5 to All on Thu Sep 22 21:13:25 2022
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    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Paul@21:1/5 to wAYNE on Fri Sep 23 02:58:53 2022
    On 9/22/2022 9:13 PM, wAYNE wrote:
    On 9/21/22 6:37 PM, Paul wrote:
    On 9/21/2022 2:12 PM, wAYNE wrote:
    Been using Shotwell as control for desktop slideshow.  Once every 3 min, image changes.  I noticed today, however, that after I deleted some existing images from the background folder and then reuploaded to Shotwell, it's like it's still trying to
    display the missing images. Even tried copying existing images to a new folder, background1, then deleting prior folder and all images from Shotwell and it's still showing black occasionally.  Any ideas welcome.  Perhaps there's a Shotwell config
    cached that I need to delete?


    /home/wayne/.local/share/shotwell/data/photo.db    # sqlite database

    Library: Missing Files           # shows thumbnails sitting in the thumbnail directory
                                      # for files that no longer exist. Hard to say what would
                                      # happen if the thumbnails got deleted. Probably "anarchy".
                                      # ~/.cache/shotwell   contains thumbnails.
                                      # The database is the controlling element, in any case.
                                      # It is worshiped.

    Select files with mouse          # Tell the tool which vacant files to deal with
    Orange selection rectangles

    Right-click, "Remove from Library"   # Should remove the vacant files from photo.db .
                                          # Presumably removing their thumbnail as well.

    *******

    sqlite3 /home/wayne/.local/share/shotwell/data/photo.db .dump > photo_database_text.txt

    That will show you the current database contents, and likely,
    what it plans to use for a slideshow. Just a guess.

    The database has a number of "CREATE INDEX" calls near the end. And
    somehow, that's how it tells one thumbnail from another. The thumbnail
    identifiers don't seem to be stored in a table, that I can see. My understanding
    of databases is very shaky.

    There are fewer thumbnails than photos. I have no idea what that means.
    There are more photos of the .png persuasion, than there are thumbnails.

    The MD5SUM value in the table, is for the master photograph, not for a thumb.

    This appears to be about as much fun as you would expect.

        Paul


    Was going to try this process, but what opens this type of file?  I downloaded and installed "db browser for sqlite" but it wouldn't open it.

    Try:

    sqlite3 photo.db .dump

    and a bunch of text should be dumped into the Terminal.

    You can also try

    file photo.db

    and determine if it is a Berkeley db, a JetBlue, a sqlite, a maria or whatever.

    For forensics, I start with the "file" command. Surprisingly, the
    "file" command is unable to keep up with modern invention, and
    some stuff you would expect to be there, is missing. Still, your
    file browsing thingy relies on "file" command, to determine what to do with
    a file. The /etc/magic file contains the gubbins that make "file" work.

    Only Level 39 Wizards know how to add entries to /etc/magic, and
    if those Wizards die... The trick is, the entries in /etc/magic
    cannot collide with one another, or bad things happen. There
    can be hundreds of detections in there. People who "create"
    new file types, are well advised to not be creating file formats
    which accidentally match the magic of an existing file type.
    I do not know who provides an idiot alerting service, to
    stop mischief like that. At one time, there used to be USENET
    conversations on the crafting of new /etc/magic entries,
    by those Wizards. But I have not seen such a discussion in
    a donkeys age.

    Paul

    --- SoupGate-Win32 v1.05
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