showimg malfunction in Kubuntu Hardy

[bob23450]

Binary package hint: showimg

I found that the application "showimg" (0.9.5-1.1ubuntu2) behaves incorrectly in Kubuntu Hardy while it worked fine in previous distributions. In particular, the thumbnails / icons suddenly disappear when the mouse pointer passes over them; they are temporarily restored when scrolling the thumbnails window. I noticed this after dist-upgrading to Hardy. Other graphic viewers work well.

[bob23450 (bzanetti-deactivatedaccount)]

I add that the problem affects both Kubuntu 8.04 and Kubuntu-KDE4 8.04 but not Kubuntu 7.10 or previous. You can easily check it by simply running the live CD then install and run the package showimg:
$ sudo apt-get install showimg
$ showimg
May be a Qt regression?

[bob23450 (bzanetti-deactivatedaccount)]

Maybe it can help: i found that the following error message is printed on the terminal for each icon loaded:

KexiDB: Connection::querySingleRecord(): !cursor->moveFirst() || cursor->eof()

coming from line 2015 of file showimg/kexi/kexidb/connection.cpp

[bob23450 (bzanetti-deactivatedaccount)]

Update: the application works correctly under openSUSE 11.0 / KDE4 (showimg 0.9.5, kipi 0.1.5 on KDE 3.5.9 "release" 49.1, opensuse 11.0).

[zoinksbob (brain-centipedes)]

I can confirm this on xubuntu and ubuntu 8.04.1 on both x86 and x86_64. All packages are up-to-date as of this posting.

[bob23450 (bzanetti-deactivatedaccount)]

I upgraded Kubuntu 8.04.1 to KDE 3.5.10 => problem still present.
Note that the debian package "showimg_0.9.5-1.1_i386.deb" installed alone with dpkg shows the problem too under Kubuntu Hardy, while it does not under Gutsy. I suspect that the problem is most likely related to the libraries rather than to the application itself.

[bob23450 (bzanetti-deactivatedaccount)]

Bingo! Downgrading the package libqt3-mt from version "3:3.3.8-b-0ubuntu3" to "3:3.3.8really3.3.7-0ubuntu11" restores the correct behaviour of showimg (even though it might break something else...).

Tested on Kubuntu Hardy (KDE 3.5.10) i386 up to date.

This suggests that a bug has been introduced in the package libqt3-mt after version 3:3.3.8really3.3.7-0ubuntu11.

[bob23450 (bzanetti-deactivatedaccount)]

The package libqt3-mt version 3.3.8-b-0ubuntu3 and the latest version 3.3.8-b-5ubuntu1 taken from the ubuntu repository are causing the malfunction in showimg while version 3.3.8really3.3.7-0ubuntu11 (ubuntu repo) as well as version 3.3.8b-5 (debian repo) are not. It should be worth to review which changes can be causing the problem.

[bob23450 (bzanetti-deactivatedaccount)]

I determined that the malfunction is being caused by the patch: "kubuntu_09_flickerfree_qiconview.dpatch" (see Bug 209227).

As a matter of fact, the library file libqt-mt.so.3.3.8 obtained by compiling the source package qt-x11-free_3.3.8-b-0ubuntu3 *without* applying that patch works correctly with showimg; the one obtained with that patch applied (default) shows the malfunction.

IMHO the patch should be either revised and corrected or removed in a future update (or maybe showimg should be patched to work correctly with the current library).

[Scott Kitterman (kitterman)]

 bob23450 (bzanetti),

It is really quite rude to subscribe other people to bugs they have not expressed an interest in. I unsubscribed myself once and yet you did it again. Please don't.

At a guess, you did this because I've expressed interest in KDE 3.5.10 related regressions. This is nothing to do with that.

[bob23450 (bzanetti-deactivatedaccount)]

Scott
I apologize for that, I must have piked up the wrong user name. Please forgive me, I didn't mean to bother you.
Best regards.

[Jonathan Thomas (echidnaman)]

Showimg is no longer in the repos, so this probably won't be fixed.