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• python: os.system does not execute shell comand

  - by capoluca

  I need to execute shell command in python program (I have ubuntu). More specifically I want to create graph using graphviz in python script. My code is os.system("dot -Tpng graph.dot -o graph.png") It does not work, but if I just type dot -Tpng graph.dot -o graph.png in command line then everything is fine. Do you know what the problem? Thank you! Edit: Does not work means that nothing happens, there are no errors. Output from dot -v -Tpng graph.dot -o graph.png: dot - graphviz version 2.26.3 (20100126.1600) Activated plugin library: libgvplugin_pango.so.6 Using textlayout: textlayout:cairo Activated plugin library: libgvplugin_dot_layout.so.6 Using layout: dot:dot_layout Using render: cairo:cairo Using device: png:cairo:cairo The plugin configuration file: /usr/lib/graphviz/config6 was successfully loaded. render : cairo dot fig gd map ps svg tk vml vrml xdot layout : circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi textlayout : textlayout device : canon cmap cmapx cmapx_np dot eps fig gd gd2 gif gv imap imap_np ismap jpe jpeg jpg pdf plain plain-ext png ps ps2 svg svgz tk vml vmlz vrml wbmp x11 xdot xlib loadimage : (lib) eps gd gd2 gif jpe jpeg jpg png ps svg

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• Sharing my home folders with other users on the same PC

  - by Stephen Myall

  After reviewing similar questions on the same subject Im still none the wiser. I want to share my music, pictures and video folders with other users on my pc. I am using 11.10 and will be upgrading to 12.04. The method I have tried is to right click on the folder (as Administrator), select "Sharing Options" check all the necessary fields and give the share a name like "music-shared". Another dialog pops up then and I select "Set nautilus Permissions". When the other user logs on they go to their Home folder click on the network and can see the "music-shared" folder, but they get a message that the do not have the necessary permissions to view the content. Im sure I'm missing something simple. My Home folder is encrypted and i am willing to unencrypt to make this work Unlike other questions on this site, I dont have a partition etc. i would be grateful for any help.

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• How do I fix my installation of ATI Catalyst Video Drivers in 12.04 LTS?

  - by Boris

  My graphic card is a Mobility Radeon HD 4200 Series. I tried these 2 answers from What is the correct way to install ATI Catalyst Video Drivers in 12.04 LTS? But unfortunately, it does not work for me: When running the amd script, I get this error message: $ sudo sh ./amd-driver-installer-12-4-x86.x86_64.run ... DKMS part of installation failed. Please refer to /usr/share/ati/fglrx-install.log for details When checking this log file, I get: Uninstalling any previously installed drivers. Creating symlink /var/lib/dkms/fglrx/8.961/source -> /usr/src/fglrx-8.961 DKMS: add completed. Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area.... cd /var/lib/dkms/fglrx/8.961/build; sh make.sh --nohints --uname_r=3.2.0-24-generic-pae --norootcheck......(bad exit status: 1) [Error] Kernel Module : Failed to build fglrx-8.961 with DKMS [Error] Kernel Module : Removing fglrx-8.961 from DKMS Deleting module version: 8.961 completely from the DKMS tree. Done. [Reboot] Kernel Module : update-initramfs When checking with fglrxinfo, I get: $ fglrxinfo X Error of failed request: BadRequest (invalid request code or no such operation) Major opcode of failed request: 138 (ATIFGLEXTENSION) Minor opcode of failed request: 66 () Serial number of failed request: 13 Current serial number in output stream: 13

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• pdflatex reads .eps files saved in OS/X, but not in Ubuntu

  - by David B Borenstein

  Sorry if this is a stupid question; I'm a newbie. I am preparing a manuscript in LaTeX. The journal (Physical Biology, an IOP publication) requires that figures be saved in .eps format, so I am trying to do that. However, I cannot get my LaTeX file to build when I have generated the .eps files on my Ubuntu computer. If I save the images on my Mac, the file build just fine. So far, I have tried saving images in ImageJ, FIJI and Inkscape. The same problem occurs in all three. When using kile, I get the following error: /usr/share/texmf-texlive/tex/latex/oberdiek/epstopdf-base.sty:0: Shell escape feature is not enabled. In TexWorks, the error is different, but still there: Package pdftex.def Error: File `./figures4/figure4a-eps-converted-to.pdf' not found. Now, if I fire up Inkscape, FIJI or ImageJ on OS/X, everything works fine. The Mac also can't build with the Ubuntu-saved images. The images generated on the Ubuntu machine open fine using Document Viewer. I am building the same LaTeX file on both computers, with the exact same results. The header of my LaTeX file is: \documentclass[12pt]{iopart} \usepackage{graphicx} \usepackage{epstopdf} \usepackage{parskip} \usepackage{color} \usepackage{iopams} And then the code for the figure is: \begin{figure} \center{\includegraphics[width=4in] {./figures4/figure4a.eps}} \footnotesize{\caption{ \label{fig:4a} (4a) lorem ipsum dolor sic amet.}} \end{figure} I'd be happy to send an example of both .eps files. Again, sorry if this is a dumb question. I tried everything I could think of before posting here. Thanks, David

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• Graphics performance of 945GME

  - by l0b0

  Edit: Since setting Appearance - Visual Effects up to a stunning "Normal", I now get ~35 FPS in glxgears right after login, with nothing else running :( I'm getting terrible graphics performance in NeverWinter Nights (native with SoU+HotU+CEP2) on my Eee PC 1005HAB. Even with all graphics settings (including the "advanced" ones) at minimum I get about 2-10 FPS, depending on the scene. Firefox is really sluggish as well - Changing tabs often takes a second, scrolling is laggy, and typing this I notice the delay between pressing keys and seeing the text on screen. The rest of the OS is running OK, although general performance seems to be even worse than my old Eee PC 900. glxgears gives about 60 FPS, which is apparently as it should be (synchronized with the monitor refresh rate). Bugs like Launchpad #252094 and the instructions for Reverting the Jaunty Xorg intel driver to 2.4 are old enough that I'm afraid following the instructions would render the system unusable. Are there any tips for improving graphics performance on this system that are still relevant for 10.10? $ uname -a Linux l0b0eee 2.6.35-28-generic #49-Ubuntu SMP Tue Mar 1 14:40:58 UTC 2011 i686 GNU/Linux $ lspci -nn | grep VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03) $ glxinfo name of display: :0.0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: SGI server glx version string: 1.4 ...

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• Can't get HP Officejet 6500 card reader to work.

  - by Dennis

  This network (wired) printer works great using the latest HPLIP drivers. However when I plug in an SD card, it just blinks and never shows up mounted anywhere. Has anyone come up with a way to mount these? I'm using Lucid, 10.04. re: version, hp-info says xxxxx@lucid:~$ hp-info HP Linux Imaging and Printing System (ver. 3.10.5) Device Information Utility ver. 5.2 Copyright (c) 2001-9 Hewlett-Packard Development Company, LP This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to distribute it under certain conditions. See COPYING file for more details. Using device: hp:/net/Officejet_6500_E709a?zc=HP05857E

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• help with synclient configuration on an ASUS touchpad

  - by yohbs

  I have recently installed Ubuntu 12.04 on my brand new ASUS K55V. The touchpad behaves weird - two finger tap is interpreted as right-click, click and drag is not working (a double click is needed) and so on. Two finger scrolling (horizontal & vertical) works great. I want the touch pad to behave the "normal" way (that is - like in my old laptop...). I read the synclient documentation and many of the questions posted here, and I can even make some stuff work. Unfortunately, I couldn't figure out how to make these work: Click and drag (that is - physically clicking the button and dragging a finger) Clicking in the right side of the button interpreted as right-click Clicking button with two fingers interpreted as middle-click. specs: The touchpad is equipped with a physical button that clicks. Here's the output of xinput list-props "ETPS/2 Elantech Touchpad" | grep Capabilities: Synaptics Capabilities (294): 1, 0, 1, 1, 1, 1, 1 Any help will be much appreciated.

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• Is an ACPI GPE storm normal in an Ubuntu session?

  - by Tinellus

  In a previous question (What is a an ACPI GPE storm?), I asked about ACPI GPE storm. Looking closer to my kern.log file in /var/log/, I notice that in every session at some point (usually withing 20' after startup) a GPE storm is triggered. When I open kern.log immediately after startup, I see that the 'GPE-storm' can be triggered by anything (a copy-action, the opening of an app like Firefox or Thunderbird, etc...). This worries me. Looking for other ACPI related events in kern.log, I find these error messages. I hope someone can give some advice: Jun 10 16:33:20 Guy-VAIO kernel: [ 0.724505] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it Jun 10 16:33:20 Guy-VAIO kernel: [ 0.795205] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored Jun 10 16:33:20 Guy-VAIO kernel: [ 1.024009] ACPI: Deprecated procfs I/F for battery is loaded, please retry with CONFIG_ACPI_PROCFS_POWER cleared Jun 10 16:33:20 Guy-VAIO kernel: [ 23.140259] [Firmware Bug]: ACPI(VGA) defines _DOD but not _DOS There's also a video driver message that worries me, don't know if it's related though: Jun 10 16:33:20 Guy-VAIO kernel: [ 23.162154] fglrx: module license 'Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY' taints kernel. Jun 10 16:33:20 Guy-VAIO kernel: [ 23.162158] Disabling lock debugging due to kernel taint As mentioned in my previous question, I'm experiencing frequent (several times /d) application crashes, that seem random, with apport messages being sent, and less frequent (once a week or so) complete system freezes where the system becomes unresponsive to keyboard, mouse or touchpad input and the only solution is a hard reboot (press start button) My questions: what about the Firmware Bugs in ACPI? how and where do I have to 'clear CONFIG_ACPI_PROCFS_POWER'? what does it mean when fglrx 'taints the kernel', is it serious and what could I do about it? Ubuntu 12.04, 64-bit, 3.2.0-25-generic Kernel, Intel® Core™ i5-2430M CPU @ 2.40GHz × 4 Thanks

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• apt-get install kernel source error

  - by MA1

  apt-get source linux-image-$(uname -r) gives me the below error Reading package lists... Done Building dependency tree Reading state information... Done Picking 'linux' as source package instead of 'linux-image-3.0.0-12-generic' NOTICE: 'linux' packaging is maintained in the 'Git' version control system at: http://kernel.ubuntu.com/git-repos/ubuntu/ubuntu-oneiric.git Skipping already downloaded file 'linux_3.0.0-17.30.dsc' Need to get 99.9 MB of source archives. Err http://pk.archive.ubuntu.com/ubuntu/ oneiric-updates/main linux 3.0.0-17.30 (tar) 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administrator. ) Err http://pk.archive.ubuntu.com/ubuntu/ oneiric-updates/main linux 3.0.0-17.30 (diff) 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administrator. ) Failed to fetch http://pk.archive.ubuntu.com/ubuntu/pool/main/l/linux/linux_3.0.0.orig.tar.gz 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administratorThe request was rejected by the HTTP filter. Contact your ISA Server administrator. ) Failed to fetch http://pk.archive.ubuntu.com/ubuntu/pool/main/l/linux/linux_3.0.0-17.30.diff.gz 500 ( The request was rejected by the HTTP filter. Contact your ISA Server administrator. ) E: Failed to fetch some archives. Can someone suggest a solution?

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• How to share Rhythmbox playlists in a network?

  - by Ralf Hersel

  My music is stored on a Synology NAS and Rhythmbox has access via NFS to the music files; works perfect. But how can I share the Rhythmbox playlists? I tried to store the playlists.xml file on the NAS and created a link in the home/user/.local/share/rhythmbox directory to the playlists.xml on the NAS but Rhythmbox converts the link to a local file. Any idea on how to force Rhythmbox to use the link to the playlists.xml file on the NAS?

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• While installing updates I get "Package operation Failed" for ubuntu 12.04

  - by user54395

  i get the following response in the details:- Please help nstallArchives() failed: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory (Reading database ... (Reading database ... 5%% (Reading database ... 10%% (Reading database ... 15%% (Reading database ... 20%% (Reading database ... 25%% (Reading database ... 30%% (Reading database ... 35%% (Reading database ... 40%% (Reading database ... 45%% (Reading database ... 50%% (Reading database ... 55%% (Reading database ... 60%% (Reading database ... 65%% (Reading database ... 70%% (Reading database ... 75%% (Reading database ... 80%% (Reading database ... 85%% (Reading database ... 90%% (Reading database ... 95%% (Reading database ... 100%% (Reading database ... 427340 files and directories currently installed.) Preparing to replace thunderbird-trunk-globalmenu 14.0~a1~hg20120409r9862.91177-0ubuntu1~umd1 (using .../thunderbird-trunk-globalmenu_14.0~a1~hg20120409r9866.91235-0ubuntu1~umd1_i386.deb) ... Unpacking replacement thunderbird-trunk-globalmenu ... Preparing to replace thunderbird-trunk 14.0~a1~hg20120409r9862.91177-0ubuntu1~umd1 (using .../thunderbird-trunk_14.0~a1~hg20120409r9866.91235-0ubuntu1~umd1_i386.deb) ... Unpacking replacement thunderbird-trunk ... Processing triggers for man-db ... locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for gnome-menus ... Processing triggers for desktop-file-utils ... Setting up crossplatformui (1.0.27) ... Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service acpid restart Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the stop(8) and then start(8) utilities, e.g. stop acpid ; start acpid. The restart(8) utility is also available. acpid stop/waiting acpid start/running, process 5286 package libqtgui4 exist QT_VERSION = 4 make -C /lib/modules/3.2.0-22-generic/build M=/usr/local/bin/ztemtApp/zteusbserial/below2.6.27 modules make[1]: Entering directory /usr/src/linux-headers-3.2.0-22-generic' CC [M] /usr/local/bin/ztemtApp/zteusbserial/below2.6.27/usb-serial.o /usr/local/bin/ztemtApp/zteusbserial/below2.6.27/usb-serial.c:34:28: fatal error: linux/smp_lock.h: No such file or directory compilation terminated. make[2]: *** [/usr/local/bin/ztemtApp/zteusbserial/below2.6.27/usb-serial.o] Error 1 make[1]: *** [_module_/usr/local/bin/ztemtApp/zteusbserial/below2.6.27] Error 2 make[1]: Leaving directory/usr/src/linux-headers-3.2.0-22-generic' make: * [modules] Error 2 dpkg: error processing crossplatformui (--configure): subprocess installed post-installation script returned error exit status 2 No apport report written because MaxReports is reached already Setting up thunderbird-trunk (14.0~a1~hg20120409r9866.91235-0ubuntu1~umd1) ... Setting up thunderbird-trunk-globalmenu (14.0~a1~hg20120409r9866.91235-0ubuntu1~umd1) ... Errors were encountered while processing: crossplatformui Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) Setting up crossplatformui (1.0.27) ... Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service acpid restart Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the stop(8) and then start(8) utilities, e.g. stop acpid ; start acpid. The restart(8) utility is also available. acpid stop/waiting acpid start/running, process 5541 package libqtgui4 exist QT_VERSION = 4 make -C /lib/modules/3.2.0-22-generic/build M=/usr/local/bin/ztemtApp/zteusbserial/below2.6.27 modules make[1]: Entering directory /usr/src/linux-headers-3.2.0-22-generic' CC [M] /usr/local/bin/ztemtApp/zteusbserial/below2.6.27/usb-serial.o /usr/local/bin/ztemtApp/zteusbserial/below2.6.27/usb-serial.c:34:28: fatal error: linux/smp_lock.h: No such file or directory compilation terminated. make[2]: *** [/usr/local/bin/ztemtApp/zteusbserial/below2.6.27/usb-serial.o] Error 1 make[1]: *** [_module_/usr/local/bin/ztemtApp/zteusbserial/below2.6.27] Error 2 make[1]: Leaving directory/usr/src/linux-headers-3.2.0-22-generic' make: * [modules] Error 2 dpkg: error processing crossplatformui (--configure): subprocess installed post-installation script returned error exit status 2

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• Remove gradients from elementary theme?

  - by John

  I really don't like the gradients in the elementary theme, and I was wondering if there were a way to remove them, from applications like Nautilus-Elementary, Postler, Dexter, etc. I've tried commenting out the Apps/[Application].rc in /usr/share/themes/elementary/gtk-2.0/gtkrc but it doesn't work, still leaves the gradients in their place. I'm a big fan of the other controls in the theme; the scroll bar, the way it borders gedit and the buttons, and I'd like to keep these features, but I don't like the way it styles its windows. Thanks for any help, as always!

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• Trying to install Team viewer on Ubuntu 12.04

  - by Teknikk

  I recently got Ubuntu installed on my server, I wanted to install TeamViewer so i could easy manage the virtual machines, However, I get errors when installing it from App store?, And I also get errors, but more detailed on the terminal. Error output: tek@tek-G53SW:~/Download$ sudo dpkg -i ipts teamviewer_linux_x64.deb dpkg: error processing ipts (--install): cannot access archive: No such file or directory (Reading database ... 142115 files and directories currently installed.) Preparing to replace teamviewer7 7.0.9360 (using teamviewer_linux_x64.deb) ... Unpacking replacement teamviewer7 ... dpkg: dependency problems prevent configuration of teamviewer7: teamviewer7 depends on libc6-i386 (>= 2.7); however: Package libc6-i386 is not installed. teamviewer7 depends on lib32asound2; however: Package lib32asound2 is not installed. teamviewer7 depends on lib32z1; however: Package lib32z1 is not installed. teamviewer7 depends on ia32-libs; however: Package ia32-libs is not installed. dpkg: error processing teamviewer7 (--install): dependency problems - leaving unconfigured Errors were encountered while processing: ipts teamviewer7 I tried to install it manually, but with no luck, I heard some others has this problems. I am running Ubuntu 12.04 x64. Error @ sudo apt-get install libc6-i386 lib32asound2 lib32z1 ia32-libs : tek@tek-G53SW:~/Download$ sudo apt-get install libc6-i386 lib32asound2 lib32z1 ia32-libs Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: ia32-libs : Depends: ia32-libs-multiarch E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). tek@tek-G53SW:~/Download$ More errors tek@tek-G53SW:~/Download$ sudo apt-get -f install [sudo] password for tek: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be REMOVED: teamviewer7 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 81.9 MB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 142441 files and directories currently installed.) Removing teamviewer7 ... tek@tek-G53SW:~/Download$ sudo apt-get install libc6-i386 lib32asound2 lib32z1 ia32-libs Reading package lists... Done Building dependency tree Reading state information... Done lib32z1 is already the newest version. libc6-i386 is already the newest version. lib32asound2 is already the newest version. Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: ia32-libs : Depends: ia32-libs-multiarch E: Unable to correct problems, you have held broken packages. tek@tek-G53SW:~/Download$ sudo apt-get install ia32-libs-multiarch Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: ia32-libs-multiarch:i386 : Depends: gstreamer0.10-plugins-good:i386 but it is not going to be installed Depends: gtk2-engines:i386 but it is not going to be installed Depends: gtk2-engines-murrine:i386 but it is not going to be installed Depends: gtk2-engines-pixbuf:i386 but it is not going to be installed Depends: gtk2-engines-oxygen:i386 but it is not going to be installed Depends: ibus-gtk:i386 but it is not going to be installed Depends: libcanberra-gtk-module:i386 but it is not going to be installed Depends: libcups2:i386 but it is not going to be installed Depends: libcupsimage2:i386 but it is not going to be installed Depends: libfontconfig1:i386 but it is not going to be installed Depends: libgail-common:i386 but it is not going to be installed Depends: libgphoto2-2:i386 but it is not going to be installed Depends: libgtk2.0-0:i386 but it is not going to be installed Depends: libnss3:i386 but it is not going to be installed Depends: libqt4-opengl:i386 but it is not going to be installed Depends: libqt4-qt3support:i386 but it is not going to be installed Depends: libqt4-scripttools:i386 but it is not going to be installed Depends: libqt4-svg:i386 but it is not going to be installed Depends: libqtgui4:i386 but it is not going to be installed Depends: libqtwebkit4:i386 but it is not going to be installed Depends: librsvg2-common:i386 but it is not going to be installed Depends: libsane:i386 but it is not going to be installed E: Unable to correct problems, you have held broken packages. tek@tek-G53SW:~/Download$

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• fern-wifi-cracker "Exec format error" breaks packaging system

  - by cunix

  root@cunix:/home/cunix# sudo apt-get remove fern-wifi-cracker Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libqt4-test libqt4-sql-mysql mysql-common libqt4-xmlpatterns libqt4-help python-qt4 python-sip libqt4-sql-sqlite libqt4-sql macchanger libqt4-designer libmysqlclient16 python-scapy libqt4-scripttools Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: fern-wifi-cracker 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. After this operation, 3,514kB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 167661 files and directories currently installed.) Removing fern-wifi-cracker ... dpkg (subprocess): unable to execute installed pre-removal script (/var/lib/dpkg/info/fern-wifi-cracker.prerm): Exec format error dpkg: error processing fern-wifi-cracker (--remove): subprocess installed pre-removal script returned error exit status 2 Errors were encountered while processing: fern-wifi-cracker E: Sub-process /usr/bin/dpkg returned an error code (1) how to uninstall?

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• External drive hanging, load average through the roof

  - by Paul Tomblin

  I have an external USB drive, and I run an hourly rsync to it as a backup. This has been working fine for years. This weekend, I got two new 2Tb internal drives, and decided it was time to re-install Ubuntu from scratch to clear out all the old cruft. About once a day since the re-install, the backup script hangs hard, usually in the "rm -rf" I do before the rsync. By the time I notice the problem, my load average is in the stratosphere and climbing fast (one time, it was over 150), but anything that doesn't touch the drive seems to be running fine. One thing that I find suspicious is that something, I don't know what, is doing a "smartctl" and a "hdparm" command on the USB drive. I'm pretty sure smartctl isn't supposed to run on external drives. I can't figure out what's doing it, either. Here's part of ps auwwfx when it's hung: root 7310 0.0 0.0 4248 352 ? D 20:15 0:00 /sbin/hdparm -C /dev/sdd root 7808 0.0 0.0 17372 1632 ? D 20:15 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 8427 0.0 0.0 4248 356 ? D 20:20 0:00 /sbin/hdparm -C /dev/sdd root 8925 0.0 0.0 17372 1628 ? D 20:20 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 9529 0.0 0.0 4248 356 ? D 20:25 0:00 /sbin/hdparm -C /dev/sdd root 10026 0.0 0.0 17372 1628 ? D 20:25 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 10655 0.0 0.0 4248 356 ? D 20:30 0:00 /sbin/hdparm -C /dev/sdd root 11151 0.0 0.0 17372 1632 ? D 20:30 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 11774 0.0 0.0 4248 356 ? D 20:35 0:00 /sbin/hdparm -C /dev/sdd root 12271 0.0 0.0 17372 1628 ? D 20:35 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 12878 0.0 0.0 4248 352 ? D 20:40 0:00 /sbin/hdparm -C /dev/sdd root 13374 0.0 0.0 17372 1632 ? D 20:40 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 14011 0.0 0.0 4248 352 ? D 20:45 0:00 /sbin/hdparm -C /dev/sdd root 14507 0.0 0.0 17372 1628 ? D 20:45 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 15116 0.0 0.0 4248 352 ? D 20:50 0:00 /sbin/hdparm -C /dev/sdd root 15612 0.0 0.0 17372 1632 ? D 20:50 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 16223 0.0 0.0 4248 352 ? D 20:55 0:00 /sbin/hdparm -C /dev/sdd root 16734 0.0 0.0 17372 1632 ? D 20:55 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 17345 0.0 0.0 4248 352 ? D 21:00 0:00 /sbin/hdparm -C /dev/sdd root 17842 0.0 0.0 17372 1628 ? D 21:00 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 18463 0.0 0.0 4248 352 ? D 21:05 0:00 /sbin/hdparm -C /dev/sdd root 18960 0.0 0.0 17372 1628 ? D 21:05 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 19598 0.0 0.0 4248 356 ? D 21:10 0:00 /sbin/hdparm -C /dev/sdd root 20096 0.0 0.0 17372 1628 ? D 21:10 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 21280 0.0 0.0 4244 356 ? D 21:15 0:00 /sbin/hdparm -C /dev/sdd root 21784 0.0 0.0 17372 1632 ? D 21:15 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 22414 0.0 0.0 4244 356 ? D 21:20 0:00 /sbin/hdparm -C /dev/sdd root 22912 0.0 0.0 17372 1628 ? D 21:20 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 23541 0.0 0.0 4244 356 ? D 21:25 0:00 /sbin/hdparm -C /dev/sdd root 24038 0.0 0.0 17372 1632 ? D 21:25 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd root 24658 0.0 0.0 4244 356 ? D 21:30 0:00 /sbin/hdparm -C /dev/sdd root 25157 0.0 0.0 17372 1628 ? D 21:30 0:00 /usr/sbin/smartctl -a -n standby -A -i /dev/sdd Why is this happening, and how can I stop it?

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• set default java version

  - by Dónal

  I have been using Java 6 on Ubuntu 11.10, but now I want to update to version 7. I've installed version 7 via PPA as described here. If I run sudo update-alternatives --config java I get the following output: There are 2 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status ------------------------------------------------------------ 0 /usr/lib/jvm/java-7-oracle/jre/bin/java 64 auto mode 1 /usr/lib/jvm/java-6-sun/jre/bin/java 63 manual mode * 2 /usr/lib/jvm/java-7-oracle/jre/bin/java 64 manual mode Similarly, if I run: sudo update-alternatives --config javac I get the output: Selection Path Priority Status ------------------------------------------------------------ 0 /usr/lib/jvm/java-7-oracle/bin/javac 64 auto mode 1 /usr/lib/jvm/java-6-sun/bin/javac 63 manual mode * 2 /usr/lib/jvm/java-7-oracle/bin/javac 64 manual mode So it looks like version 7 is already the default. But if I run either java -version or javac -version The output indicates that version 6 is still the default. How can I set the default to version 7?

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• 13.04 Logitech bluetooth speaker adapter pairing but no mixer output

  - by user1455622

  I had to change [General] Enable = Socket in /etc/bluetooth/audio.conf to get it to pair. But now that they are I don't get an output in pavucontrol. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/HFPAG on adapter /org/bluez/3855/hci0. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/HFPHS on adapter /org/bluez/3855/hci0. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/A2DPSource on adapter /org/bluez/3855/hci0. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/A2DPSink on adapter /org/bluez/3855/hci0. E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'connected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'connected' D: [pulseaudio] bluetooth-util.c: Unknown Bluetooth minor device class 0 D: [pulseaudio] module-card-restore.c: Not restoring profile for card bluez_card.C8_84_47_15_B7_34, because already set. I: [pulseaudio] module-card-restore.c: Restoring port latency offsets for card bluez_card.C8_84_47_15_B7_34. I: [pulseaudio] card.c: Created 2 "bluez_card.C8_84_47_15_B7_34" W: [pulseaudio] module-bluetooth-device.c: Profile has no transport D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event. I: [pulseaudio] card.c: Changed profile of card 2 "bluez_card.C8_84_47_15_B7_34" to off I: [pulseaudio] module.c: Loaded "module-bluetooth-device" (index: #22; argument: "address=C8:84:47:15:B7:34 profile=a2dp"). I: [alsa-source] alsa-source.c: Scheduling delay of 10,06ms, you might want to investigate this to improve latency... I: [alsa-source] ratelimit.c: 5 events suppressed I: [alsa-source] alsa-source.c: Overrun! I: [alsa-source] alsa-source.c: Increasing minimal latency to 2,00 ms D: [alsa-source] alsa-source.c: latency set to 20,00ms D: [alsa-source] alsa-source.c: hwbuf_unused=62008 D: [alsa-source] alsa-source.c: setting avail_min=442 What can I do to get it working? Regards,

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• flash video appears blue ubuntu 12.04

  - by pst007x

  This is a duplicate, however the solution given does not work. After updating to Ubuntu 12.04 from Ubuntu 11.10, all video is now blue, whether playing in a browser or a player. I have tried to uninstall all Flash and re-installed but makes no difference. Does anyone have any ideas? Fix (work around) Issue: All web browsers flash player video is blue Chromium Google Chrome Firefox Both flash plugins causes flash video to appear have a blue overlay, so remove. Adobe - flashplugin Flashplugin - installer Solution (not as functional as adobe flash plug in but it works) Install Lightspark (plus any browser-plugins) or Install Gnash (plus any browser-plugins) FIX (Possible) Removed: Gnash-browser plugins Video Decode and Presentation API for Unix (libraries) libvdpau1 Installed: Adobe-flashplugin Re-started browser, and it worked for me.

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• avr-gcc 4.7 on ubuntu 12.04

  - by birky

  Please how can I install avr-gcc version 4.7 on ubuntu 12.04? :~$ avr-gcc -v Using built-in specs. COLLECT_GCC=avr-gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/avr/4.5.3/lto-wrapper Target: avr Configured with: ../src/configure -v --enable-languages=c,c++ --prefix=/usr/lib --infodir=/usr/share/info --mandir=/usr/share/man --bindir=/usr/bin --libexecdir=/usr/lib --libdir=/usr/lib --enable-shared --with-system-zlib --enable-long-long --enable-nls --without-included-gettext --disable-libssp --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=avr Thread model: single gcc version 4.5.3 (GCC) :~$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

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• Can I get any logging and error output from Flash?

  - by Dave M G

  To further provide better information for my other question about browsers and Pulse audio, I wanted to see if I could get some kind of helpful log information. I've looked at logs from both Pulseaudio and Firefox, but don't see anything like an error in either of them. The problem I'm experiencing may be coming from Flash. Is there a way I can trap specifically any log output from Flash? Update: I've downloaded the Linux Flash Player 10.3 Plugin content debugger, and I've installed libflashplayer.so in ~/.mozilla/firefox/plugins/, and copied the user/* files to /user. I've also set up mm.cfg to say: ErrorReportingEnable=1 TraceOutputFileEnable=1 MaxWarnings=50 TraceOutputFileName=/home/dave/.macromedia/Flash_Player/Logs/flashlog.txt And I rebooted just to be sure everything was starting fresh. However, after playing a Flash video from Youtube, flashlog.txt is not being generated. How can I be sure that logging is in fact enabled, so I can tell whether I'm simply not getting errors or I haven't set up logging correctly?

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• Interrupted Upgrade from 11.10 to 12.04

  - by Tamil

  My upgrade using alternative iso from 11.10 to 12.04 got interrupted and I had to hard restart my machine. Now I feel that everything is recovered except my already installed packages like vim. How do I backup my home folder for fresh installation of ubuntu? Following are the errors I'm facing I couldn't mark any package for re-installation in synaptic or remove and install too. output of sudo apt-get install vim Building dependency tree Reading state information... Done Package vim is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'vim' has no installation candidate If I try installing it from synaptic I get apache2.2-common: Package apache2.2-common has no available version, but exists in the database. This typically means that the package was mentioned in a dependency and never uploaded, has been obsoleted or is not available with the contents of sources.list my sources.list file # added by the release upgrader # deb cdrom:[Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120822.4)]/ precise main restricted # added by the release upgrader # # deb cdrom:[Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120822.4)]/ precise main restricted # deb cdrom:[Ubuntu 11.04 _Natty Narwhal_ - Release amd64 (20110427.1)]/ natty main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://archive.ubuntu.com/ubuntu precise main restricted deb-src http://archive.ubuntu.com/ubuntu precise main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://archive.ubuntu.com/ubuntu precise-updates main restricted deb-src http://archive.ubuntu.com/ubuntu precise-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://archive.ubuntu.com/ubuntu precise universe deb-src http://archive.ubuntu.com/ubuntu precise universe deb http://archive.ubuntu.com/ubuntu precise-updates universe deb-src http://archive.ubuntu.com/ubuntu precise-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://archive.ubuntu.com/ubuntu precise multiverse deb-src http://archive.ubuntu.com/ubuntu precise multiverse deb http://archive.ubuntu.com/ubuntu precise-updates multiverse deb-src http://archive.ubuntu.com/ubuntu precise-updates multiverse ## Uncomment the following two lines to add software from the 'backports' ## repository. ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. # deb http://us.archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse # deb-src http://us.archive.ubuntu.com/ubuntu/ natty-backports main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu precise-security main restricted deb-src http://archive.ubuntu.com/ubuntu precise-security main restricted deb http://archive.ubuntu.com/ubuntu precise-security universe deb-src http://archive.ubuntu.com/ubuntu precise-security universe deb http://archive.ubuntu.com/ubuntu precise-security multiverse deb-src http://archive.ubuntu.com/ubuntu precise-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. deb http://archive.canonical.com/ubuntu precise partner # deb-src http://archive.canonical.com/ubuntu natty partner ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. deb http://extras.ubuntu.com/ubuntu precise main deb-src http://extras.ubuntu.com/ubuntu precise main # deb http://tamil.3758_gmail.com:[email protected]/free unstable main # disabled on upgrade to oneiric # deb http://debian.datastax.com/natty oneiric main # disabled on upgrade to oneiric sudo apt-get update Err http://archive.ubuntu.com precise InRelease Err http://archive.canonical.com precise InRelease Err http://archive.ubuntu.com precise-updates InRelease Err http://archive.ubuntu.com precise-security InRelease Err http://extras.ubuntu.com precise InRelease Err http://archive.canonical.com precise Release.gpg Unable to connect to 172.16.140.249:3142: Err http://archive.ubuntu.com precise Release.gpg Unable to connect to 172.16.140.249:3142: Err http://archive.ubuntu.com precise-updates Release.gpg Unable to connect to 172.16.140.249:3142: Err http://extras.ubuntu.com precise Release.gpg Unable to connect to 172.16.140.249:3142: Err http://archive.ubuntu.com precise-security Release.gpg Unable to connect to 172.16.140.249:3142: W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/precise/InRelease

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• ubuntu integrated graphics suspend + hybrid graphics

  - by kapad

  My laptop uses a hybrid graphics hardware. Using the vgaswitcheroo I am able to power off either card and switch between them correctly. The issue is that the system wakes up/resumes from suspend correctly only when using the discrete graphics, or atleast the discrete graphics must be powered on even if the display is connected to the onboard intel card. Has anyone faced this issues? Is there any workaround? I only want to use the integrated card and not the discrete amd card. System Info Intel HD 3000 ATI mobility radeon HD 7600M Ubuntu 12.10

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• Juju didn't configure rabbitmq for openstack?

  - by SaM

  I have installed ubuntu Openstack HA with juju with all 24 servers. But my openstack is not working at all. On dashboard on every page I get errors saying "could not retrieve usage information", "could not retrieve volume information, "could not retrieve .....etc I spent hours and have discovered that juju has not done configuration correctly. I found that on cloud controller in nova.conf juju has added rabitmq vhost enrty, but that virtual host is not added in rabbitmq. Then how is its suppose to work? And on juju-gui canvas rabbimq is all green and is working fine, which in reality its not. I am really wondering if juju has really done correct configuration in all 24 servers now, I am getting the feeling that it would have been faster if I would have done openstack deployment manually instead of using juju. Why was the virtual host entry not added in rabbitmq? How should I solve this?

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• Two Wifi Icons in Panel [Solved]

  - by Alex

  I have the exact problem in 13.10 as this user Two Wifi indicators in panel. Here are some screenshots: Here are some screenshots from another user: http://ubuntuforums.org/showthread.php?t=2183020&p=12825563 ifconfig and iwconfig outputs $ ifconfig lo Link encap:Local Loopback inet addr:XXXXXX Mask:XXXXXXX inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:2243 errors:0 dropped:0 overruns:0 frame:0 TX packets:2243 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:209889 (209.8 KB) TX bytes:209889 (209.8 KB) wlan0 Link encap:Ethernet HWaddr XXXXXXXXX inet addr:XXXXXX Bcast:XXXXXXXX Mask:XXXXXXX inet6 addr: XXXXXXX Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5925 errors:0 dropped:0 overruns:0 frame:0 TX packets:3361 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2951818 (2.9 MB) TX bytes:630579 (630.5 KB) $ iwconfig lo no wireless extensions. wlan0 IEEE 802.11abgn ESSID:"XXXXX" Mode:Managed Frequency:2.437 GHz Access Point: XXXXXXXX Bit Rate=72.2 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=49/70 Signal level=-61 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:153 Invalid misc:472 Missed beacon:0

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• which default.list should i modify for default applications and what are the differences between the 2

  - by damien

  I would like to add miro to the default application GUI in system settings/default applications.I added ;miro.desktopnext to all rhythmbox.desktop entries eventually discovering if it was not added to audio/x-vorbis+ogg=rhythmbox.desktop as audio/x-vorbis+ogg=rhythmbox.desktop;miro.desktop it would not appear in the system settings/default applications drop down list for audio. I can find default.list in either /etc/gnome/defaults.list or /usr/share/applications/defaults.list modifying either gives me the same results.What is the difference and which is the correct list to modify?

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