On Sunday, January 6, 2013 8:00:02 PM UTC-6, Sebastian Reichel wrote:
> Package: openbox
> 
> Version: 3.5.0-6
> 
> Severity: important
> 
> 
> 
> Hi,
> 
> 
> 
> openbox hangs with 100% CPU usage, when removing a display from a dual
> 
> head configuration. This only happens when removing the second display
> 
> while some windows are still displayed on it. If all windows are
> 
> positioned on the first display openbox does not hang after removing
> 
> the second display.
> 
> 
> 
> The bug can be reproduced using the following steps:
> 
> 
> 
>  $ xrandr --output HDMI2 --right-of LVDS1 --auto
> 
>  # start some X program and move it's window to the new display
> 
>  $ xrandr --output HDMI2 --off
> 
> 
> 
> -- Sebastian
> 
> 
> 
> -- System Information:
> 
> Debian Release: 7.0
> 
>   APT prefers testing
> 
>   APT policy: (500, 'testing'), (100, 'unstable'), (50, 'experimental')
> 
> Architecture: amd64 (x86_64)
> 
> Foreign Architectures: i386
> 
> armhf
> 
> 
> 
> Kernel: Linux 3.7-trunk-amd64 (SMP w/2 CPU cores)
> 
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> 
> Shell: /bin/sh linked to /bin/dash
> 
> 
> 
> Versions of packages openbox depends on:
> 
> ii  dpkg                      1.16.9
> 
> ii  libc6                     2.13-37
> 
> ii  libglib2.0-0              2.33.12+really2.32.4-3
> 
> ii  libice6                   2:1.0.8-2
> 
> ii  libobrender27             3.5.0-6
> 
> ii  libobt0                   3.5.0-6
> 
> ii  libsm6                    2:1.2.1-2
> 
> ii  libstartup-notification0  0.12-1
> 
> ii  libx11-6                  2:1.5.0-1
> 
> ii  libxau6                   1:1.0.7-1
> 
> ii  libxext6                  2:1.3.1-2
> 
> ii  libxinerama1              2:1.1.2-1
> 
> ii  libxml2                   2.8.0+dfsg1-7
> 
> ii  libxrandr2                2:1.3.2-2
> 
> ii  libxrender1               1:0.9.7-1
> 
> 
> 
> Versions of packages openbox recommends:
> 
> ii  obconf          1:2.0.3+20110805+debian-1
> 
> ii  openbox-themes  1.0.2
> 
> 
> 
> Versions of packages openbox suggests:
> 
> ii  libxml2-dev  2.8.0+dfsg1-7
> 
> ii  menu         2.1.46
> 
> ii  python       2.7.3~rc2-1
> 
> ii  ttf-dejavu   2.33-3
> 
> 
> 
> -- no debconf information
> 
> 
> 
> 
> 
> -- 
> 
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> 
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Just thought I'd share. I hit this issue as well and looked into it a bit 
deeper. Turns out it's fixed in master. If you want a quick fix now, you can 
build from the source.

Commit with fix:
https://github.com/danakj/openbox/commit/01f62ded2fe289fe245f4f05b5825f4bdcbe1dc3

Associated bug:
https://bugzilla.icculus.org/show_bug.cgi?id=5500


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