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Bug#798809: [libreoffice-impress] Deleting and pasting slides in Impress trigger 100% CPU and freeze UI



Package: libreoffice-impress
Version: 1:5.0.1-1
Severity: important

--- Please enter the report below this line. ---

Since I upgraded to 5.0, Impress slows to unusability any time I attempt to delete or paste slides. I primarily use it on a document with roughly 80-100 slides that I copy and update weekly, so it may have a lot of cruft in it. However, it shouldn't take a whole minute to delete 20 slides, let alone the 20 minutes it has taken on at least one occasion.

I've reduced the document to a seemingly minimum number of slides, but it's still 13MiB on disk. If it's ok to upload something of that size here, I will do so.

It seems that after removing enough pages, it begins to work well again. I don't know what triggers it yet. If I have opportunity to further experiment, I'll provide updates.

Thanks,
Michael

--- System information. ---
Architecture: amd64
Kernel: Linux 4.1.0-2-amd64

Debian Release: stretch/sid
500 unstable www.deb-multimedia.org
500 unstable httpredir.debian.org
500 stable dl.google.com
500 stable deb.opera.com
1 experimental httpredir.debian.org

--- Package information. ---
Depends (Version) | Installed
=================================================-+-=====================
libreoffice-core (= 1:4.2.6-1) | 1:5.0.1-1
libreoffice-draw (= 1:4.2.6-1) | 1:5.0.1-1
libc6 (>= 2.14) |
libetonyek-0.0-0 |
libgcc1 (>= 1:4.1.1) |
libodfgen-0.0-0 (>= 0.0.3) |
libstdc++6 (>= 4.9) |
libwpd-0.9-9 |
libwpg-0.2-2 |
libxml2 (>= 2.6.27) |
uno-libs3 (>= 4.1.0~alpha) |
ure |
zlib1g (>= 1:1.1.4) |
fontconfig |
fonts-opensymbol |
libreoffice-common (>> 1:4.2.6) |
ure (>= 4.2~) |
libatk1.0-0 (>= 1.12.4) |
libboost-date-time1.55.0 |
libc6 (>= 2.16) |
libcairo2 (>= 1.2.4) |
libclucene-contribs1 (>= 2.3.3.4) |
libclucene-core1 (>= 2.3.3.4) |
libcmis-0.4-4 (>= 0.4.0) |
libcups2 (>= 1.4.0) |
libcurl3-gnutls (>= 7.16.2) |
libdbus-1-3 (>= 1.0.2) |
libdbus-glib-1-2 (>= 0.78) |
libeot0 |
libexpat1 (>= 2.0.1) |
libexttextcat-2.0-0 (>= 2.2-8) |
libfontconfig1 (>= 2.11) |
libfreetype6 (>= 2.3.5) |
libgcc1 (>= 1:4.1.1) |
libgdk-pixbuf2.0-0 (>= 2.22.0) |
libgl1-mesa-glx |
OR libgl1 |
libglib2.0-0 (>= 2.15.0) |
libglu1-mesa |
OR libglu1 |
libgraphite2-3 (>= 1.2.2) |
libgtk2.0-0 (>= 2.24.0) |
libharfbuzz-icu0 (>= 0.9.18) |
libharfbuzz0b (>= 0.9.18) |
libhunspell-1.3-0 (>= 1.3.3) |
libhyphen0 (>= 2.7.1) |
libice6 (>= 1:1.0.0) |
libicu52 (>= 52~m1-1~) |
libjpeg8 (>= 8c) |
liblangtag1 (>= 0.4.0) |
liblcms2-2 (>= 2.2+git20110628) |
libldap-2.4-2 (>= 2.4.7) |
libmythes-1.2-0 |
libneon27-gnutls |
libnspr4 (>= 2:4.9-2~) |
OR libnspr4-0d (>= 1.8.0.10) |
libnss3 (>= 2:3.13.4-2~) |
OR libnss3-1d (>= 3.12.0~beta2) |
libpango-1.0-0 (>= 1.14.0) |
libpangocairo-1.0-0 (>= 1.14.0) |
libpangoft2-1.0-0 (>= 1.14.0) |
libpng12-0 (>= 1.2.13-4) |
libsm6 |
libssl1.0.0 (>= 1.0.0) |
libstdc++6 (>= 4.9) |
libx11-6 |
libxext6 |
libxinerama1 |
libxml2 (>= 2.7.4) |
libxrandr2 |
libxrender1 |
libxslt1.1 (>= 1.1.25) |
libxt6 |
uno-libs3 (>= 4.2.0~rc1) |
zlib1g (>= 1:1.1.4) |
librdf0 (>= 1.0.17) |
libreoffice-core (= 1:4.2.6-1) | 1:5.0.1-1
libc6 (>= 2.14) |
libcdr-0.0-0 |
libdbus-1-3 (>= 1.0.2) |
libdbus-glib-1-2 (>= 0.78) |
libetonyek-0.0-0 |
libfreehand-0.0-0 |
libgcc1 (>= 1:4.1.1) |
libglib2.0-0 (>= 2.15.0) |
libicu52 (>= 52~m1-1~) |
liblcms2-2 (>= 2.2+git20110628) |
libmspub-0.0-0 |
libodfgen-0.0-0 (>= 0.0.3) |
libstdc++6 (>= 4.9) |
libvisio-0.0-0 (>= 0.0.18) |
libwpd-0.9-9 |
libwpg-0.2-2 |
libxml2 (>= 2.6.27) |
uno-libs3 (>= 4.1.0~alpha) |
ure |
zlib1g (>= 1:1.1.4) |


Recommends (Version) | Installed
====================================================-+-===========
libreoffice-avmedia-backend-gstreamer | 1:5.0.1-1
OR libreoffice-avmedia-backend-vlc |


Suggests (Version) | Installed
=======================-+-===========
bluez |
--
Michael redbeard Johnson
or someone like him

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