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• Ubuntu Kernel Panic on Inserting Network Cable

  - by Skizz

  I've been having a recurring kernel panic with my Ubuntu 9.04 installation (see other posts by me). Today, I was fiddling around trying to get some cable attached when the system panicked. Looking at the layout, the only cable in the vicinity was the network cable. Upon further investigation, it seems that the system reliably panics whenever I insert a network cable. Removing the cable does not cause the panic. How do I stop the system panicking when I insert the network cable? If more information is needed, please add comments/answers and I'll post the required data.

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• ubuntu server 10 - slow and can't remove desktop environment

  - by Alex

  i'm running ubuntu server 10.10 with the desktop environment. simple page requests are taking over 5 seconds even when connecting to the server through our local network. i believe this is partially related to having the desktop environment installed, as the server worked faster (but not as fast as it should considering that it's on the local network), but tasksel fails every time (aptitude failed 100). my knowledge of networking and linux in general is limited. would really appreciate ideas on how i can troubleshoot this problem. oh also, in the system monitor, one of the processors is almost always around 100%. i doubt this is normal too....

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• Ubuntu 9.1 Only Sees 244 MB RAM, while BIOS and Windows Sees 1.5 GB

  - by nicorellius

  I have 1.5 GB of RAM installed on an older Dell, Pentium 4. I just installed Ubuntu 9.1 and the system is only seeing 244 MB of RAM, even though there is 1.5 GB on the system. The BIOS sees all of it. I ran a Knoppix disc and it only saw 25 MB upon booting. I made no particular changes to the installation taht would affect this. I looked through the BIOS and the only setting I could see was the AGP aperture. Not even sure what this is. Anyone know where I went wrong? I also tried moving the memory modules around on the board. Booted with the 1 GB stick, still saw 244 MB.

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• Compiling Ubuntu server: "libQtGui.so: undefined reference to png functions" errors

  - by Kowalikus

  I want to compile wkhtmltopdf on Ubuntu Server, but I have a problem with following errors: /usr/lib/libQtGui.so: undefined reference to `png_read_info@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_set_gAMA@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_set_PLTE@PNG12_0' ... /usr/lib/libQtGui.so: undefined reference to `png_create_info_struct@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_set_bgr@PNG12_0' /usr/lib/libQtGui.so: undefined reference to `png_get_valid@PNG12_0' What can I do? in /usr/lib lrwxrwxrwx 1 17 2010-02-17 15:00 libQtGui.so -> libQtGui.so.4.5.2 lrwxrwxrwx 1 17 2010-02-17 14:59 libQtGui.so.4 -> libQtGui.so.4.5.2 lrwxrwxrwx 1 17 2010-02-17 14:59 libQtGui.so.4.5 -> libQtGui.so.4.5.2 -rw-r--r-- 1 10071604 2009-10-14 23:34 libQtGui.so.4.5.2

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• Ubuntu, control the init startup

  - by Xolve

  Ubuntu uses upstart instead of sysvinit. However there are still runlevels and the links in them. I have installed tor and it has added itself to the startup of the OS. Now I want to remove it and the popular options are to remove the links of starting and stopping the service from runlevels or make the /etc/init.d/ script non-executable. This is fine but this will be problematic in case I want to put tor again on the startup list. How would I know to put the proper sequences in the proper runlevel directories. Is there any complete guide given? What are the rules for this? Any tools to manage the init? Please tell

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• Installing a Wl-138g wireless NIC on ubuntu server

  - by Narcolapser

  So I have this little server that I've been working on as a hobby. But due to changes in living arrangements I have move and it won't have access to a wired lan. So I need to install a wireless adapter i had sitting around. But most tutorials I have run across are either out dated, or about ubuntu desktop and talk about things using a GUI. So my question is firstly is there a utility for identifying and downloading drivers for new hardware. that would save my having this problem in the future. If not, how do i go about installing said wireless NIC? ~N

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• BitNami LAMP stack on ubuntu

  - by Desmond Liang

  I just installed BitNami LAMP stack on ubuntu. When I visit localhost/127.0.0.1 Apache returns "403 Forbidden. You don't have permission to access / on this server." I try repointing Apache's home directory to another folder (same hard drive, same partition) that's set to 777 recursively. Still getting 403. And then I change the ownership of the directory to under my username and daemon group from root/root. Same error. Am I missing something here?

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• Installing maven on Ubuntu by manual download

  - by WebDevHobo

  To install Maven, I downloaded the latest version from the website and then followed these steps: http://maven.apache.org/download.html#Installation The last step, the version control, does not work. It says that 'mvn' is currently not installed and that I should type sudo apt-get install maven2 If I go directly to the mvn file itself, it does work: root@ubuntu:~# /usr/local/apache-maven/apache-maven-2.2.1/bin/mvn --version Apache Maven 2.2.1 (r801777; 2009-08-06 12:16:01-0700) Java version: 1.6.0_21 Java home: /usr/java/jdk1.6.0_21/jre Default locale: en_US, platform encoding: UTF-8 OS name: "linux" version: "2.6.32-25-generic" arch: "i386" Family: "unix" So, what am I doing wrong here? Or what would and apt-get install do extra that I might have forgotten?

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• Starting Redmine at boot using upstart on Ubuntu

  - by joekr

  So after installing redmine from the repositories on Ubuntu 12.04, i've tried to create an upstart script (see below) so it would start up at boot time. While service redmine start does start redmine, it does not start automatically when booting. Also when i run service redmine stop it does stop redmine but simply hangs until i press ctrl+c Also, after stopping starting it again does not work (Also just hangs). From all the upstart examples and tutorials i have seen this should work, so i guess i'm overlooking something. Any hints ? #Redmine description "Redmine" start on started networking stop on stopping networking stop on starting shutdown console output expect daemon exec ruby /usr/share/redmine/script/server webrick -e production -b 188.40.184.155 -p 3000 -d respawn EDIT: Fixed "typo"

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• Recover backup copy of a ubuntu linux installation on a usb stick using dd

  - by user10826

  Hi, I installed Ubuntu 10.04 on a usb stick in persistent install mode. So I could boot the laptop or my desktop computer with the stick, at boot time. Once I needed the 8GB stick for another purposes so I thought about coyping it to my desktop doing from mac os x: dd if=/dev/disks3s of=/Users/jack/Desktop/usb_copy Now I am trying to do the opposite, after having used the stick, which was formatted to NTFS, just doing dd if=/Users/jack/Desktop/usb_copy of=/dev/disks3s but although I can see that almost of the files are there, I can not boot again. IT is also strange the the file permissions are kind of strange, something like _user What can I do ? Thanks

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• Watch videos from a remote computer on the LAN on ubuntu

  - by tapan

  I want to watch the videos on a friends computer on the LAN without having to download it. Both of us are running ubuntu. Now one way is to ssh to his computer, cd to the directory where the video is and run the falling command: cat video.avi | ssh me@mycomputer mplayer - This works. However the problem is that I cannot seek inside the video as in can't go forward or backward in it. Is there a method by which I can watch the videos and also seek in them ? I can install any software on his comp and my comp to aid this process. I have root level access on both computers. Any suggestions ?

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• Ubuntu Wireless card not found

  - by user32121

  Hello all, I'm trying to setup Ubuntu on an old PC. I ran the following command, lspci, in order to get info on the wireless card installed. 00:0a.0 Ethernet controller: Marvell Technology Group Ltd. 88w8335 [Libertas] 802.11b/g Wireless (rev 03) Does anyone know where I can get drivers for this card/chip? And also, how to install (I'm rather new to linux). Also, I'm sure the card is working because I just formatted over xp, and everything was working well. Thanks in advanced!

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• Ubuntu login takes 15 seconds, "I/O error dev fd0 sector 0"

  - by Dan

  After upgrading to Ubuntu 10.04, when I first login it takes 10+ seconds where it just sits at the gdm backgroup before taking me to gnome. By switching to a terminal window during this 10 seconds I saw the error message "I/O error /dev/fd0 sector 0" being outputted. I assume this has to do with the floppy drive... but I don't even have a floppy drive! How do I disable this device and make this error message go away (and hopefully fix the long wait)? Thanks.

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• Ubuntu 9.10: switch in KVM, mouse is detected but not usable immediately

  - by CarlF

  I use a KVM switch to jump between my tower and laptop, both placed on my desk. With Ubuntu 9.04 this worked perfectly. In 9.10, when I switch to the tower, then back to the laptop, the mouse is detected (as shown by /var/log/messages) but moving it has no effect. If I use Ctrl-Alt-F1 to switch to the TTY, then Alt-F7 back to Xorg, the mouse starts working. The tower is running Windows 7, but that shouldn't matter. Sometimes, but not other times, the USB keyboard on the KVM switch is also not usable and I have to use the laptop's built-in keyboard to switch to the TTY. The laptop has two monitors, the built-in and an external. It's (obviously) the external panel that is attached via the KVM switch. Any suggestions? Report to Canonical as a bug?

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• Ubuntu 11.04 and OpenLDAP - where is the config?

  - by Tom SKelley

  I've been asked to setup a multimaster LDAP environment on Ubuntu 11.04 - instead of a single master server. I cloned the master server and recreated it into two VMs. I am trying to follow the instructions on the OpenLDAP documentation here: http://www.openldap.org/doc/admin24/replication.html and it talks about modifying the cn=config tree within LDAP. The subdirectory tree appears to be there at: /etc/ldap/slapd.d/ and a slapcat -b cn=config drops out a load of config information. When I try to connect using a browser and the admin bind credentials: ldapsearch -D '<adminDN>' -w <password> -b 'cn=config' I get: # extended LDIF # # LDAPv3 # base <> (default) with scope subtree # filter: (objectclass=*) # requesting: ALL # # search result search: 2 result: 32 No such object I don't see the config context when I connect via an LDAP browser either. I'm sure I'm missing something, but I can't see what it is!

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• ipv6 auto configuration not working in ubuntu natty

  - by allan ruin

  In win7, my computer can automatically get a IPV6 global address and use ipv6 network, but in ubuntu natty, I can't find out how to let stateless configuration work. My network is a university campus network,so I don't need tunnels. I think if one thingg can silently and successfully complished in windows it shouldn't be impossible in linux. I did can manually edit /etc/network/interfaces and use a static ipv6 address, and I can use ipv6 this way, but I just want to use auto-configuration. I found this post: How to disable autoconfiguration on IPv6 in Linux? and try sudo sysctl -w net.ipv6.conf.all.autoconf=1 sudo sysctl -w net.ipv6.conf.all.accept_ra=1 but no luck

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• Full HD video playback acceleration with mplayer on Ubuntu Lucid

  - by pts

  I know that for an NVidia card I can sudo apt-get install nvidia-current mplayer, reboot, and then use mplayer -vo vdpau -vc ffmpeg12vdpau,ffwmv3vdpau,ffvc1vdpau,ffh264vdpau FILE.mkv to get accelerated video playback of H.264 and other codecs, so even full HD videos can be played back with only little CPU. (And there are many other options, e.g. XBMC also supports VDPAU.) But how do I get accelerated video playback if I have a recent ATI or Intel video card on Ubuntu Lucid? How do I figure out if my video card has acceleration built in? The solution has to work with mplayer or mplayer2. It's OK for me to recompile mplayer(2), but I'd prefer installing both the kernel and the X.org X server from a binary package repository.

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• where are flash settings stored locally on Ubuntu

  - by Joseph Mastey

  It's possible change flash settings on your computer at this URL: http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager03.html However, given that Macromedia has no problems setting LSO cookies on your HDD that you cannot find, I am a little bit skeptical that the settings I've tweaked there would be saved. So, I'd like to be able to look locally on my PC and verify the settings. Where can I find the settings for Flash locally? Surely the plugin cannot be heading to Macromedia itself for them (that is a future too bleak to contemplate). I am running Ubuntu 10.04. Thanks, Joe

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• Connect to wired and wireless networks at same time, Ubuntu

  - by Gary Chambers

  Currently, I have a media PC running Ubuntu 10.04 that I am trying to connect via a wired network cable directly to a NAS box, and wirelessly to the router. This works no problem after I run sudo /etc/init.d/networking restart but I can't get both interfaces to come up on system startup. My /etc/network/interfaces file reads as follows: auto eth0 iface eth0 inet static address 10.0.1.2 netmask 255.255.254.0 broadcast 10.0.1.255 network 10.0.1.0 auto wlan2 iface wlan2 inet dhcp As I say, I know this works, because I can get it to work by restarting the network interfaces, but I can't bring them both up on system startup. Does anyone know why this might be?

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• Ubuntu: Take actions when system temperature gets too high

  - by Josh

  One of the CPU fans on my Compaq Presario laptop running Ubuntu 9.10 seems to have bit the dust. The fan is deep within the case and I intend to replace the laptop in the next 6 months so it's not worth replacing it. I have the laptop on a cooling pad and most of the time the system is fine, CPU temps around 90°-110°F. Occasionally, however, I'm seeing random lockups which I believe is due to the system overheating. How can I configure the system to: Lower the CPU speed when the temperature reaches a certain level? (I.E. 110°F) Shutdown the system when the tempature reaches a critical level? (And what would that be? 130°?)

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• Ubuntu VPN Server (PPTPD) Configuration - Pass Traffic to Internet

  - by SnAzBaZ

  I am trying to configure PPTPD on my Ubuntu box to pass all VPN traffic through to it's internet connection, so I essentially want it to work like a Proxy. I think the problem is that no default gateway is being assigned to my PPTP client (Windows 7). I can connect to the VPN fine, I get an IP address and DNS servers but no default gateway. Do I need to configure a specific option to tell the VPN server to forward all traffic it receives down it's eth0 port and out to the internet. Thanks!

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• Wireless card not found on Ubuntu

  - by idealflip

  Hello all, I'm trying to setup Ubuntu on an old PC. I ran the following command, lspci, in order to get info on the wireless card installed. 00:0a.0 Ethernet controller: Marvell Technology Group Ltd. 88w8335 [Libertas] 802.11b/g Wireless (rev 03) Does anyone know where I can get drivers for this card/chip? And also, how to install (I'm rather new to linux). Also, I'm sure the card is working because I just formatted over xp, and everything was working well. Thanks in advanced!

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• ubuntu input/output error

  - by rplevy

  I'm having a problem with Ubuntu that I'm finding hard to troubleshoot for reasons that will become clear: reboot -bash: /sbin/reboot: Input/output error dmesg -bash: /bin/dmesg: Input/output error ps -e ps: error while loading shared libraries: /lib/libproc-3.2.8.so: cannot read file data: Input/output error lsof -bash: /usr/bin/lsof: Input/output error fsck -bash: /sbin/fsck: Input/output error badblocks -bash: /sbin/badblocks: Input/output error So I can't see what is going on, and I can't remotely reboot. What can I do to get to the bottom of this? Interestingly: init 0 Segmentation fault I can cat /var/syslog but not /var/log/messages or several other important files. less and more don't work, neither do tail or head, etc.

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• Ubuntu 10.04: unable to login after fresh install

  - by Richard

  Hello All, I,ve just installed a fresh copy of Ubunutu 10.04, downloaded a couple of days ago. The installation seemed to go fine. However I can't log in: the login screen just seems to reset and asks me for my password again. It's not an authentication / incorrect password issue. If I stick in a wrong password, I get "Authentication failure". I've googled around, others report the same issue on the Ubuntu forums, but there doesn't seem to be a fix. Does anyone know of a work around or what the problem is? Have 9.10, I might end up just installing that instead. THanks

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• How to automatically execute a shell script when logging into Ubuntu

  - by Mike Rowave

  How do I get a script to execute automatically when I log in? Not when the machine starts up, and not for all users, but only when I (or any specific user with the script) login via the GNOME UI. From reading elsewhere I thought it was .bash_profile in my home directory, but for me it has no effect. When I manually execute it in a terminal window by typing ~/.bash_profile it works, but it won't run automatically when I log in. I'm running Ubuntu 11.04. The file permission on my .bash_profile is -rwx------. No .bash_profile existed in my home directory before I created it today. I seem to remember older versions of Linux having a .profile file for each user, but that doesn't work either. How is it done? Do I need to configure something else to get the .bash_profile to work? Or does the per-user login script need to be in some other file?

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