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• external USB HD doesn't show up on 'sudo fdisk -l' on one Ubuntu, shows up on another (both 'precise')

  - by Menelaos

  I have a 1.5TB WD external USB HDD and two Ubuntu systems, both 'precise'. When I plug the disk on system A it doesn't show up on the output of sudo fdisk -l nor is it automatically mounted (note that that wasn't always the case - it used to appear in the past). When I plug it on system B (again Ubuntu precise) it shows up when I do a sudo fdisk -l (output appended at the end) and mounts automatically just fine. What does this discrepancy point to and what kind of diagnostics should I run / tools I should use to troubleshoot the problem? I followed the suggestion I received to do a sudo tail -f /var/log/syslog and the output is the following when I plug, unplug and replug the USB cable on System A: Sep 14 23:27:09 thorin mtp-probe: checking bus 2, device 3: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-2" Sep 14 23:27:09 thorin mtp-probe: bus: 2, device: 3 was not an MTP device Sep 14 23:28:01 thorin kernel: [ 338.994295] usb 2-2: USB disconnect, device number 3 Sep 14 23:28:04 thorin kernel: [ 341.808139] usb 2-2: new high-speed USB device number 4 using ehci_hcd Sep 14 23:28:04 thorin mtp-probe: checking bus 2, device 4: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-2" Sep 14 23:28:04 thorin mtp-probe: bus: 2, device: 4 was not an MTP device Sep 14 23:29:54 thorin AptDaemon: INFO: Quitting due to inactivity Sep 14 23:29:54 thorin AptDaemon: INFO: Quitting was requested (I guess the last two message are irrelevant). Output of sudo fdisk -l on System B $ sudo fdisk -l Disk /dev/sda: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00070db4 Device Boot Start End Blocks Id System /dev/sda1 * 2048 2905114623 1452556288 83 Linux /dev/sda2 2905116670 2930276351 12579841 5 Extended /dev/sda5 2905116672 2930276351 12579840 82 Linux swap / Solaris Disk /dev/sdb: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x9c849c84 Device Boot Start End Blocks Id System /dev/sdb1 * 63 488375999 244187968+ 7 HPFS/NTFS/exFAT Disk /dev/sdg: 1500.3 GB, 1500299395072 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930272256 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003e17f Device Boot Start End Blocks Id System /dev/sdg1 2048 2930272255 1465135104 7 HPFS/NTFS/exFAT

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• Alt-Tab in 12.04 requires pressing Enter to select app, can I disable that?

  - by Brett Hoerner

  Alt+Tab quickly opens the switcher for me, but tabbing over to the next app and releasing the keys will just leave it selected, not switch to it. I have to press Enter to actually switch to the app. How do I make it automatically switch when I release like every other switcher out there? Same behavior occurs when using Super+Tab with either the Compiz Ring Switcher or Shift Switcher. This seems different from the 11.10 behavior.

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• Flashing task bar(firefox) in lxde panel and ubuntu internal error

  - by arroy_0209

  I have upgraded from ubuntu10.04 to 12.04 and installed lxde. The panel is now customized according to my convenience. The problem is there was a default checked option for "Flash when there is any window requiring attention" in Task bar(window list) and now when I run firefox, at times the concerned bar in the panel window list starts flashing but it is not clear exactly why at that moment firefox requires my attention. Normally this happens after I download some files (pdf files) and keep using firefox. The only solution I have found is to quit firefox and even after that I receive this message "Sorry, ubuntu12.04 has experienced an internal error. If you notice further problems, try restarting the computer." As usual I report the detailed message to ubuntu as suggested and finally restart the computer. So there are two problems, first, exactly why firefox needs my attention at times and second, why immediately after this, ubuntu experiences an internal error. Please suggest what I should do.

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• Force startx to run X in a specific resolution and refresh Rate

  - by Z9iT

  From my past experience (using Win-Xp), this particular monitor works only on 60Hz , Best resolution being 1024x768. I have "installed and configured" Ubuntu 12.04 Minimal (on USB stick) so that most of the time terminal is used, however, whenever there is a need to enter GUI, I may issue startx command to go into gnome. However the problem is that on this particular system, issuing this command poses problem because its default refresh rate won't synchronize with the monitor. The display keep on flickering and utterly unreadable. It is visible that gnome has been loaded and default wallpaper and desktop items are visible. But the problem is due to refresh rate different than 60Hz. I am looking for a command attribute to startx command which will force the refresh rate to 60Hz and resolution preferably to 1204x768 I can open terminals with Ctrl+Alt+T and enter commands. Key combinations like Ctrl+Alt+NumPlus works flawlessly in distributions like solaris, but it's not working for me. Also the commands like xrandr -r 60 60 being refresh rate wont work. The same problem is faced even when I boot from a live CD

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• Running a startup program in terminal as sudo

  - by Brandon

  I need to run a python script in a terminal, myscript.py at startup (on Lubunt). This script requires root. I've setup a .desktop file that runs the following command: lxterminal --command="python /home/d/Jarvis/alarm.py && /bin/bash" The terminal window opens at startup and runs the script, but then closes when the Python script returns an error (because it's not being run as root). When I change the Exec= to this... lxterminal --command="sudo python /home/d/Jarvis/alarm.py && /bin/bash" ... (prefixing command with 'sudo') which works. However, the terminal opens on startup and displays the [sudo] password for d: \ prompt, requiring me to input my password. I would like the execution of the python script at startup to be completely automatic with no user interaction. How can I accomplish this?

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• I cannot remove/install software some dependency issue?

  - by Ryuzaki

  I'm having difficulty trying to install/uninstall applications in Ubuntu 12.04 LTS. I have this warning error that appears on my desktop in the form of a red icon with a line through it and it states: An error occurred, please run Package Manager from the right-click menu or apt-get in a terminal to see what is wrong. The error message was: 'Error: BrokenCount 0' — This usually means that your installed packages have unmet dependencies. I tried to repair automatically through ubuntu software center and I kept getting errors or it just didn't seem to work. Afterwards, I opened terminal and used sudo apt-get check command to see what the problem was and the results yielded: 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: libjack-jackd2-0 : Breaks: libjack-jackd2-0:i386 (!= 1.9.8~dfsg.1-1ubuntu1) but 1.9.8~dfsg.2-1precise1 is installed libjack-jackd2-0:i386 : Breaks: libjack-jackd2-0 (!= 1.9.8~dfsg.2-1precise1) but 1.9.8~dfsg.1-1ubuntu1 is installed E: Unmet dependencies. Try using -f. After I ran sudo apt-get -f install (in an attempt to fix the issue at hand), I encountered the following errors/code: okudaira@haru-kano:~$ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: libjack-jackd2-0 Suggested packages: jackd2 The following packages will be upgraded: libjack-jackd2-0 1 upgraded, 0 newly installed, 0 to remove and 24 not upgraded. 1 not fully installed or removed. Need to get 0 B/197 kB of archives. After this operation, 3,072 B of additional disk space will be used. Do you want to continue [Y/n]? y (Reading database ... 181702 files and directories currently installed.) Preparing to replace libjack-jackd2-0 1.9.8~dfsg.1-1ubuntu1 (using .../libjack-jackd2-0_1.9.8~dfsg.2-1precise1_amd64.deb) ... Unpacking replacement libjack-jackd2-0 ... dpkg: error processing /var/cache/apt/archives/libjack-jackd2-0_1.9.8~dfsg.2-1precise1_amd64.deb (--unpack): './usr/share/doc/libjack-jackd2-0/buildinfo.gz' is different from the same file on the system dpkg-deb: error: subprocess paste was killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/libjack-jackd2-0_1.9.8~dfsg.2-1precise1_amd64.deb localepurge: Disk space freed in /usr/share/locale: 0 KiB localepurge: Disk space freed in /usr/share/man: 0 KiB localepurge: Disk space freed in /usr/share/gnome/help: 0 KiB localepurge: Disk space freed in /usr/share/omf: 0 KiB Total disk space freed by localepurge: 0 KiB E: Sub-process /usr/bin/dpkg returned an error code (1) The real problem I'm having is interpreting what is being stated. I'm fairly new to the ubuntu experience so I'm not very well-versed with the terminology and the entire in's and out's. Can someone tell me what's wrong with my system? I can no longer install/remove any programs at all.

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• Drivers for Sony Ericsson Phones

  - by user93671

  I'm trying to locate a driver to access my memory card inside my Sony Ericsson Walkman phone. I have 12.04 and it doesn't seem to recognize it. Ideally I would like to install the entire PC Suite that came with the phone, but I'll just settle to access the memory card so I can add music when I need too. I tried using mass storage mode, media transfer, phone mode, even print mode and still nothing.

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• Why won't apt-get install anything after I deleted its cached lists?

  - by Gernot

  Recently I had a problem with the update-manager and search for a solution. On my search I found a post, where someone had the same problem and as solution they told him he should run this command on the terminal: sudo rm /var/lib/apt/lists/* I also run this, and the update-manager worked again. But now, I noticed that apt-get won't install anything. I wanted to install rvm (for ruby) and therefore I needed a few packages (build-essential and curl to be precise). But if I tried to install them, I always get the message that there is no installcandidate for that package... . What can I do to get apt-get working again?

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• Memory limiting solutions for greedy applications that can crash OS?

  - by Hooked

  I use my computer for scientific programming. It has a healthy 8GB of RAM and 12GB of swap space. Often, as my problems have gotten larger, I exceed all of the available RAM. Rather than crashing (which would be preferred), it seems Ubuntu starts loading everything into swap, including Unity and any open terminals. If I don't catch a run-away program in time, there is nothing I can do but wait - it takes 4-5 minutes to switch to a command prompt eg. Ctrl-Alt-F2 where I can kill the offending process. Since my own stupidity is out of scope of this forum, how can I prevent Ubuntu from crashing via thrashing when I use up all of the available memory from a single offending program? At-home experiment*! Open a terminal, launch python and if you have numpy installed try this: >>> import numpy >>> [numpy.zeros((10**4, 10**4)) for _ in xrange(50)] * Warning: may have adverse effects, monitor the process via iotop or top to kill it in time. If not, I'll see you after your reboot.

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• AMD Catalyst diskless cluster

  - by Nathan Moos

  I'm using Ubuntu 13.10 to set up a diskless compute cluster. When I use the procedure detailed in https://help.ubuntu.com/community/DisklessUbuntuHowto, I successfully am able to boot all four nodes. However, once I install Catalyst, I immediately have problems: only one diskless node boots properly, with the other two hanging while attempting to start X. My assumption is that my Catalyst build was somehow specific to the node which I booted from first, which somehow prevents the other nodes from loading Catalyst. Can anyone provide hints to help solve this? Thank you in advance!

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• How can I read the sourcecode of a PDF

  - by Fendrix

  I want get the sourcecode of a PDF File. Unfortunately once I open the PDF with a texteditor some lines doesn't make sense... just like.... %PDF-1.6 %âãÏÓ 3 0 obj <</Ff 0/F 6/Type/Annot/Subtype/Widget/DR<</Font<</Helv 2 0 R>>>>/T(Ä\n¬4^XÈ4ýæçO§W²W^D³^Ywzº<92>õÌ^AÀÄi]â<96><8c>)/V(Ä\n¬4^XÈ4ýæçO§W²W^Dø<93>r^D¥à<82>ú<83>Z^Q7^Cv^FÈ)/AP<</N 1 0 R>>/P 4 0 R/BS<</W 1/S/S>>/FT/Tx/Rect[40 50 70 80]/DA(Ä\n¬4^XÈ4ýæçO§W²W^Dù~êw3<84>&^X´âL|q@³^VC<8a>"Ýo^N¿=Ì<91>ta^R`àz)>> endobj 6 0 obj so %PDF-1.6 is fine but after it s not resolving the correct letters.... I tried with vim ... is there any chance to get the correct content ....

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• Touchpad stops working after desktop shows up

  - by gsedej

  Hi! I have problem with touch-pad. It is not working correctly. It goes like this. When laptop is booting, right after desktop shows, I can move mouse with touch-pad for a second, but when icons shows up, touch-pad does not want to move cursor at all. Even buttons stops work. The same problem with Ubuntu 10.04 and Ubuntu 10.10 I can see "Touchpad" tab in "Mouse" menu, and I can even set "two finger scrolling". I checked in gconf-editor under "desktop-gnome-pheriferals-touchpad" and it's enabled. Furthermore I checked xinput and it is as it should be: SynPS/2 Synaptics TouchPad id=11 [slave pointer (2)]. I tried to create new master reattach but still nothing... EDIT: Laptop has fn + F7 to control touch-pad. Ubuntu shows bobble showing touchpad OFF and touchpad ON. But it does nothing. No matter if it say ON, it still does not work.

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• How can I determine whether a shellscript runs as root or not?

  - by EvilPhoenix

  This is something I've been curious about. I make a lot of small bash scripts (.sh files) to do tasks that I routinely do. Some of those tasks require everything to be ran as superuser. I've been curious: Is it possible to, within the BASH script prior to everything being run, check if the script is being run as superuser, and if not, print a message saying You must be superuser to use this script, then subsequently terminate the script itself. The other side of that is I'd like to have the script run when the user is superuser, and not generate the error. Any ideas on coding (if statements, etc.) on how to execute the aforementioned?

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• How to make the emacs not to pop up a window when using tab-completion?

  - by Jinx

  When I use the emacs shell mode or in gdb, when I type double tab, the emacs pop up a new window which always cover an existed window. While in terminal, when I type double tab, to complete a directory, the terminal just print all the candidates in the same window. Can I make the emacs not to pop up a new window when I use this feature? edit this is I wanna do , but it's wrong, can somebody fix this? ;remove annoying poped-up windows (defun rm-popup-window () (other-window) (kill-this-buffer) (other-window) ) (global-set-key [C-'] 'rm-popup-window);

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• Blender 2.63a window position unstable with dual monitor extended desktop

  - by Steve Smith

  I have two 1920 x 1200 HP monitors and running Ubuntu 12.10. If I set them up as an extended desktop, (both 1280 x 1024 positioned for 2048 x 1280, all my applications work fine EXCEPT Blender (even Inkscape). Blender works great on a single monitor but always defaults to a window size that uses all available real estate and it can't do that with 2048 x 1280. It launches, but jumps all over the screen. Does any know a way to start Blender in a fixed size window so it would run in just one monitor?

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• Mouse / Usb don't work

  - by Enrico

  I just start now with Xubuntu (11.10) and don't know why but my mouse work strage, so if i move my mouse it move like jump not fluid (but if i use my pad there aren't any problem). another really strange thing is if I take off the mouse (usb) and put back doesn't work anymore.also if i put pen drive nothing uppen, maybe it's some usb problem or something i don't know. PC: Fujitsu Siemens Amilo. thank for your help Enrico

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• Ubuntu doesn't find hdds with higher clock rates

  - by user136243

  I dual boot windows 7 64-bit and ubuntu 13.10 64-bit on separate disks, and utilize some overclocking from the BIOS. Windows works fine, however ubuntu can't seem to find any hard drives, except for at stock cpu speeds. While attempting to boot it says Gave up waiting for root device... and ALERT! /dev/sdb7 does not exist. Dropping to shell! A bootable usb stick still works, but gparted doesn't detect any other drives. Have tried: Boot-repair Changing SATA mode in BIOS Newer kernels Older ubuntu versions Not sure it's relevant, but the motherboard is a Gigabyte GA-A75M-UD2H with the newest BIOS version, the CPU an AMD Llano. This is hardly a fatal error, but it's inconvenient to change BIOS settings whenever I want to switch OS, and furthermore I'm quite curious about why it won't work. I'd appreciate any insight into what the actual problem is. So how can I resolve this issue ?

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• Max Brightness in ubuntu lower when compared to windows

  - by sklingel

  I've installed Ubuntu 14.04 on my (new) ThinkPad Edge330. Everything worked quite well so far. I've noticed that the screen wasn't that bright and was a bit disappointed of the ThinkPad, but then I realized that the brightness was much better on a parallel windows 7 installation I did later on. I already used this tip: Max brightness on NetBook I did increase the brightness to an acceptable level (could be the actual max. brightness, or is there a way to increase it even further?) But now unfortunately I cannot change the screen brightness at all anymore. Not by using the FN keys or in the system settings.

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• ubuntu lite volume control

  - by idio

  i've recently gave up on the main ubuntu, especially since new updates ruined Quantal and Raring is just a mess and went on to install a more friendly version: Ubuntu Lite. while i am quite happy with most functionalities of this lite version of 12.04, one of the modifications volume control is totally ridiculos, there is an applet that is completely counter-intutitive. So my question is: is there a way to install back the ubuntu classic volume control so i can let go of this applet alltogether? thanx

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• Partition Configuration to avoid reinstalling applications after update

  - by nightcrawler

  The major bane when I update Ubuntu (which is way more frequent than Windows) is that I lose all installed application. To be precise I do a lot of Maple, Matlab, Geogebra & for all of those I install Java platform which too isnt very straightforward plus the license management things, which really give me craps. I don't install application in /home (to be made available to all users) thus a separate /home partition is meaningless. Can we circumvent this problem somehow such that Java dependent applications along with JDK doesn't blow away after update, may be by a separate partition (just like /home) where only custom (other than provided by Ubuntu Software Center) install application resides Further: I use specific binary of Java (Java6 update 32), its an important requirement for me, thus I don't want to let it crash/overwritten or similar

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• Set up a GUI managed firewall for other machines?

  - by Azendale

  What ways are there of setting up a firewall for traffic routed for other machines whose rules can be managed by a GUI? Can GUFW do it? FireStarter? (or should that be avoided because it is supposedly no longer updated?) *By filtering, I'm mean the traffic I am setting rules up for is not destined for this computer. It is either from or to other computers on my LAN. Say, for (a simplified, hypothetical) example: I have an ethernet connection at my dorm that I have plugged into eth0. It gets an address of 192.168.1.185 and I also have 192.168.185.0/24 routed to me, so I don't have to do any NAT. I have a hub attached to my second ethernet port (eth1) with a few Windows computers and I give addresses out of my 192.168.185.0/24 block with DHCP. How can I use my Ubuntu box to block incoming connections from eth0 that are being routed to my Windows computers and let through just a few specific ports (so fellow students can't see what files my Windows boxes are sharing via SMB)?

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• Unity greeter background not changing for users automatically after upgrade

  - by bioShark

  I have recently upgraded from 11.10 to 12.04. Normal upgrade, no new installation. In 11.10 I was using Simple LightDM Manager tool to set a custom wallpaper on the login screen. This tool unfortunately doesn't seem to do anything since I have upgraded. I have also heard that 12.04 is suppose to have this feature (changing login wallpaper per different user) by default. I have searched in settings but unfortunately in vain. So, to keep it short, could somebody direct me to the option(s) page where I can make the desired changes.

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• Can I use Ubuntu to write a Windows 7 ISO to USB in Ubuntu?

  - by Salim Fadhley

  I need to create a Windows installation USB drive from an ISO file. I used unetbootin which seems to be the only tool that can write non-linux images. The USB disk boots (sort-of), but it gets stuck at the very first stage. A UNetbootin spash screen that keeps counting-down from ten to 0, and then restarts. The screen looks like this: Is there a way to make Windows boot from a USB image created on Linux?

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• FTP Connection established...Connection timed out problem with all my sites and FTP programs?

  - by janoChen

  Just few hours ago FileZilla was working fine. Then, suddenly I started to get this error: Status: Resolving address of ftp.readtypechinese.com Status: Connecting to 69.175.14.60:21... Status: Connection established, waiting for welcome message... Error: Connection timed out Error: Could not connect to server And it happens with all my sites: Status: Resolving address of edasich.dreamhost.com Status: Connecting to 173.236.223.223:21... Status: Connection established, waiting for welcome message... Error: Connection timed out Error: Could not connect to server I'm using FileZilla 3.5.0 and Ubuntu 11.10. Any suggestions to fix this? (I already tried Passive mode and it doesn't work). EDIT: Ocasionally, the log goes beyond the ...waiting for welcome message: Status: Connection established, waiting for welcome message... Response: 220 DreamHost FTP Server Command: USER aleche23 Error: Connection timed out Error: Could not connect to server But the connection gets timed out again. Weird...I just realized that I have the same problems with other FTP programs too: gFTP: Looking up ftp.readtypechinese.com Trying readtypechinese.com:21 Connected to readtypechinese.com:21 220 ProFTPD 1.3.2 Server (server) [69.175.14.60] USER [email protected] Connection to ftp.readtypechinese.com timed out

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• Does the lense for videos search youtube correctly

  - by Luis Alvarado

  When I search in youtube.com for "Erika Tipo 11" I get videos about the actual show. When I do the same using the Dash video Lense I get anything else except the actual show. I mean I even get chinesse stuff, some yoga lessons and anything VERY out there that is not even remotely related to the show. Now my questions are: Does the video lense search in a similar way as searching in youtube/vimeo/any other video site? Is there an option apart from the Filter settings to configure the behavior of the search so it searches in a similar way as one would do when searching from the actual site.

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