| 2011-10-20 16:45:17 |
Gionatan Danti |
bug |
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|
added bug |
| 2011-10-20 16:45:17 |
Gionatan Danti |
attachment added |
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lshw.txt https://bugs.launchpad.net/bugs/878958/+attachment/2562941/+files/lshw.txt |
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| 2011-10-21 22:11:41 |
Julien Lavergne |
lubuntu-artwork (Ubuntu): status |
New |
In Progress |
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| 2011-10-21 22:11:47 |
Julien Lavergne |
lubuntu-artwork (Ubuntu): importance |
Undecided |
Medium |
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| 2011-10-21 22:11:51 |
Julien Lavergne |
lubuntu-artwork (Ubuntu): assignee |
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Julien Lavergne (gilir) |
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| 2011-10-28 11:40:32 |
Julien Lavergne |
nominated for series |
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Ubuntu Oneiric |
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| 2011-10-28 11:40:32 |
Julien Lavergne |
bug task added |
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lubuntu-artwork (Ubuntu Oneiric) |
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| 2011-10-28 11:40:32 |
Julien Lavergne |
nominated for series |
|
Ubuntu Precise |
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| 2011-10-28 11:40:32 |
Julien Lavergne |
bug task added |
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lubuntu-artwork (Ubuntu Precise) |
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| 2011-10-28 11:44:23 |
Launchpad Janitor |
branch linked |
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lp:~lubuntu-desktop/+junk/lubuntu-artwork |
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| 2011-10-28 11:45:12 |
Launchpad Janitor |
lubuntu-artwork (Ubuntu Precise): status |
In Progress |
Fix Released |
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| 2011-10-28 11:58:12 |
Julien Lavergne |
description |
This (very nice!) default theme use, for many widgets, the "inset" text rendering mode from murrina engine. While beautiful, this "engraved" text rendering effect cause a very high CPU load when a moving window overlaps another one, static window. This results in the overlapped window issuing many expose events that can not be served in time, so a grey trail is visible behind the moving window.
Steps to reproduce this:
a) open a window with some text (eg: obconf -> appearance)
b) open a terminal window and run top
c) open another window and keep moving it over the previous one
d) read, from top, the cpu usage: it will at be near 100% for one core (my machine has an i5-520 CPU @ 2.4 GHz)
Possibile solutions:
a) enable X-based when-mapped backing store
b) use compiz (or other gl-based wm) as window manager
c) simply disable "inset" text rendering or change default theme
Solutions a) and b) have their problems and controindications (especially for a resource-contrained distribution as Lubuntu).
Solution c) is the most obvious: simply disable inset text rendering and CPU usage decrease significantly.
Thanks
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: lubuntu-artwork 0.18
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Thu Oct 20 18:31:43 2011
InstallationMedia: Lubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
ProcEnviron:
LANG=it_IT.UTF-8
SHELL=/bin/bash
SourcePackage: lubuntu-artwork
UpgradeStatus: No upgrade log present (probably fresh install) |
SRU explanation:
[Impact]: This bug impact performance on default installaion of Lubuntu, on some configurations
[Development Fix]: This bug was fixed in 0.19 version of lubuntu-artwork, by disabling inset on theme configuration
[Stable Fix]: Same fix than the development fix can by apply (see http://launchpadlibrarian.net/83896618/lubuntu-artwork_0.18_0.19.diff.gz)
[Test Case] From the original report :
a) open a window with some text (eg: obconf -> appearance)
b) open a terminal window and run top
c) open another window and keep moving it over the previous one
d) read, from top, the cpu usage: it will at be near 100% for one core
[Regression Potential] : Minimal, eventually some graphical difference in some cases, but the tests doesn't show any visual differences
Original report :
This (very nice!) default theme use, for many widgets, the "inset" text rendering mode from murrina engine. While beautiful, this "engraved" text rendering effect cause a very high CPU load when a moving window overlaps another one, static window. This results in the overlapped window issuing many expose events that can not be served in time, so a grey trail is visible behind the moving window.
Steps to reproduce this:
a) open a window with some text (eg: obconf -> appearance)
b) open a terminal window and run top
c) open another window and keep moving it over the previous one
d) read, from top, the cpu usage: it will at be near 100% for one core (my machine has an i5-520 CPU @ 2.4 GHz)
Possibile solutions:
a) enable X-based when-mapped backing store
b) use compiz (or other gl-based wm) as window manager
c) simply disable "inset" text rendering or change default theme
Solutions a) and b) have their problems and controindications (especially for a resource-contrained distribution as Lubuntu).
Solution c) is the most obvious: simply disable inset text rendering and CPU usage decrease significantly.
Thanks
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: lubuntu-artwork 0.18
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Thu Oct 20 18:31:43 2011
InstallationMedia: Lubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
ProcEnviron:
LANG=it_IT.UTF-8
SHELL=/bin/bash
SourcePackage: lubuntu-artwork
UpgradeStatus: No upgrade log present (probably fresh install) |
|
| 2011-10-28 12:00:37 |
Julien Lavergne |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2011-10-28 12:17:22 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/lubuntu-artwork |
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| 2011-10-31 19:37:02 |
Martin Pitt |
lubuntu-artwork (Ubuntu Oneiric): status |
New |
Fix Committed |
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| 2011-10-31 19:37:05 |
Martin Pitt |
bug |
|
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added subscriber SRU Verification |
| 2011-10-31 19:37:07 |
Martin Pitt |
tags |
amd64 apport-bug oneiric |
amd64 apport-bug oneiric verification-needed |
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| 2011-10-31 20:19:21 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/oneiric-proposed/lubuntu-artwork |
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| 2011-12-17 18:38:48 |
Martin Pitt |
tags |
amd64 apport-bug oneiric verification-needed |
amd64 apport-bug oneiric verification-done |
|
| 2011-12-19 14:38:11 |
Launchpad Janitor |
lubuntu-artwork (Ubuntu Oneiric): status |
Fix Committed |
Fix Released |
|
