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• ubuntu one syncronizing problems

  - by user72249

  I am a user of Ubuntu and Ubuntu One. First: I had a serious problem with ubuntu one. I have a windows and several Ubuntu machine and they all sync one account. My first problem is that i can't really delete files. Whenever I delete something Ubu One resync it, so it appears again in my folder. Furthermore, when i move something to another dir it synconize the new location and resync the old one, so i got doubled my files. I can't reorganize my files. So i tried to delete the duplicated files through the web dash, but i cant reorder and select multiple files by extension. For example i wanted to move all PDF to another location... Second: I can't configure in the ubuntu one app the loacation of the main One folder. For example i want my One folder to be on another partition than my HOME folder. It is a main problem in linux and windows also. I tried to move that folder in windows with the hardlink method. So i uninstalled the U1, then i created a folder link to another drive, than installed the U1. THEN i lost all my files in my U1. Lucky thing that i have a backup, but i thought U1 is a stable solution for me, and i planned to extend my space, but these bugs are major problems! It's worth to pay for it if it's working perfectly. I think it's more important than releasing a new version in every month.

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• Ubuntu One downloads already existing files

  - by Islam Hassan

  I've uploaded some files to Ubuntu One from my home laptop and begin to download it on my work laptop. Then I've got a USB and copied these files directly through the USB driver. My problem now is that Ubuntu One still downloading these files although I've copied them to Ubuntu One folder. I need it to consider the already existing files as synced and don't download it again. And I need Ubuntu One for further use so I can't simply quit it. How could I mark the already existing files as synced ?

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• Can't install Ubuntu one

  - by Yehonatan Tsirolnik

  While trying to install Ubuntu one it throwes me this error - W:Failed to fetch http://ppa.launchpad.net/rabbitvcs/ppa/ubuntu/dists/DISTIBUTION/main/binary-amd64/PAckages 404 Not Found, W:Failed to fetch http://ppa.launchpad.net/rabbitvcs/ppa/ubuntu/dists/DISTRIBUTION/main/binary-i386/Packages 404 Not Found, E:Some index files failed to download. They have been ignored, or old ones used instead. and I can't install it Thanks.

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• How to chroot Ubuntu+1?

  - by jrg

  What is the recommended way to use chroot from Ubuntu Stable (in my case 11.04) with Ubuntu+1 (11.10)? Linked (but probably separate) is "Is there anything special that I need to do in order to get Xorg working?" Reason I ask is because I'd like to test a few GTK3 programs without losing my current (stable) Ubuntu, or having to get my data synced. I thought about maybe running a SSH server from 11.10 and then using SSH's X forwarding, but that seems rather cumbersome.

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• Large uploaded file won't display in Ubuntu One but is included in file usage

  - by user1488963

  On Ubuntu 10.04, I uploaded a single 711 MB. My total file usage in Ubuntu One went up to 877MB, which is about right, but the file doesn't show in Ubuntu One so I can't download or delete it. Either the file is there and I can't see it for some reason. Or the file is not there and the total file usage figure is wrong. Does anyone know what has happened? I have a free account but am well below my 5GB limit.

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• Languages and tools that are "portable" (work well from a USB storage drive) [closed]

  - by CodexArcanum

  I'm a huge fan of running programs from my portable hard drive: it means I always have my favorite tools no matter what computer I'm on. Sadly, development tools seem to be hard to get portable at times. I recently realized that the "portable" version of MinGW I was using off my USB drive was actually interfering with a locally installed version of MinGW, so sometimes even the tools you think are portable, aren't. So what are the best portable development tools that you've used? What runs well on a portable media, leaves the host machine clean, and generally makes moving around easier for you?

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• (Ubuntu 10.04 - Windows vista premium on HP pavilion desktop) I reistall my windows, but now i cant

  - by meyosef

  Hi, I had Windows vista premium on HP pavilion desktop. I split disk for ubuntu and make also swap disk part and then i install ubuntu 10.04. To the enterence of my computer after installation i have menu that i can to choose between windows or ubuntu. Today I reistall my windows, but choose menu disapear. I dont see in windows the rdisk part that I give to Ubuntu, soo its mean ubuntu still exist but i cant enter to him. Please help me, Thanks

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• Access Windows Home Server from an Ubuntu Computer on your Network

  - by Mysticgeek

  If you’re a Windows Home Server user, there may be times when you need to access it from an Ubuntu machine on your network. Today we take a look at the process of accessing files on your home server from Ubuntu. Note: In this example we’re using Windows Home Server with PowerPack 3, and Ubuntu 10.04 running on a home network. Access WHS from Ubuntu To access files on your home server from Ubuntu, click on Places then select Network. You should now see your home server listed in the Network folder as well as other Windows machines…double-click the server to access it. If you don’t see your server listed, you might need to go into Windows Network \ Workgroup and find it there. You’ll be prompted to enter in the correct credentials for WHS just as you would when accessing it from a Windows machine. It’s your choice if you want to have the password remembered or not…make your selection and click Connect. Now you will see the available folders on your home server. In this example we signed in with Administrator credentials, so we have access to everything. Double-click on the folder share you want to access content from…here we see MS Office documents on the server. Or, here we take a look at a music folder with various MP3 files which you can make Ubuntu play. You can access the files directly from the server, provided there is a Linux app that can handle the file type. In this example we opened a Word document in OpenOffice. Here we’re playing an MKV movie file from the server in Totem Movie Player.   You can easily search for files on the server as well… If you want to store your Ubuntu files on WHS it’s just a matter of dragging them to the correct WHS folder you want them in. If you’re using an Ubuntu computer on your home network and need to access files from Windows Home Server, luckily it’s a straight-forward process. You’ll often have to find the correct software to use Windows files, but even that’s getting much easier with version 10.04. Similar Articles Productive Geek Tips Share Ubuntu Home Directories using SambaCreate a Samba User on UbuntuGMedia Blog: Setting Up a Windows Home ServerRestore Files from Backups on Windows Home ServerInstall Samba Server on Ubuntu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Speed Up Windows With ReadyBoost Awesome World Cup Soccer Calendar Nice Websites To Watch TV Shows Online 24 Million Sites Windows Media Player Glass Icons (icons we like) How to Forecast Weather, without Gadgets

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• Ubuntu 12.04 LDAP SSL self-signed cert not accepted

  - by MaddHacker

  I'm working with Ubuntu 12.04, using OpenLDAP server. I've followed the instructions on the Ubuntu help pages and can happily connect without security. To test my connection, I'm using ldapsearch the command looks like: ldapsearch -xv -H ldap://ldap.[my host].local -b dc=[my domain],dc=local -d8 -ZZ I've also used: ldapsearch -xv -H ldaps://ldap.[my host].local -b dc=[my domain],dc=local -d8 As far as I can tell, I've setup my certificate correctly, but no matter why I try, I can't seem to get ldapsearch to accept my self-signed certificate. So far, I've tried: Updating my /etc/ldap/ldap.conf file to look like: BASE dc=[my domain],dc=local URI ldaps://ldap.[my host].local TLS_CACERT /etc/ssl/certs/cacert.crt TLS_REQCERT allow Updating my /etc/ldap.conf file to look like: base dc=[my domain],dc=local uri ldapi:///ldap.[my host].local uri ldaps:///ldap.[my host].local ldap_version 3 ssl start_tls ssl on tls_checkpeer no TLS_REQCERT allow Updating my /etc/default/slapd to include: SLAPD_SERVICES="ldap:/// ldapi:/// ldaps:///" Several hours of Googling, most of which resulted in adding the TLS_REQCERT allow The exact error I'm seeing is: ldap_initialize( ldap://ldap.[my host].local ) request done: ld 0x20038710 msgid 1 TLS certificate verification: Error, self signed certificate in certificate chain TLS: can't connect. ldap_start_tls: Connect error (-11) additional info: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed After several hours of this, I was hoping someone else has seen this issue, and/or knows how to fix it. Please do let me know if I should add more information, or if you need further data.

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• Ubuntu 9.1 Install from Disc Stalls After "Install Ubuntu" Sleclection is Made - eMachine

  - by nicorellius

  I am trying to install Ubuntu 9.1 from the ISO on a CD (it needs to be this version) on an eMachine with a brand new Seagate hard disk. The CD boots OK, and I choose the language. Then I am presented with the choices: Try Ubuntu Install Ubuntu.... etc, etc... I have tried the top two choices several times (trying Ubuntu and installing it), but each and every time the installation stalls and the disc stops spinning right after I hit enter after choosing the option I want. I have tried different CD/DVD drives, changing the jumpers on both CD drives, different hard drives, and nothing works. Maybe there is a BIOS setting that is choking the installation? Any help would be appreciated.

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• Port forwarding + shared connection with Ubuntu

  - by Joey Adams

  Because my wireless router's ethernet ports are defective, I set up a shared wireless connection from my laptop (which has wifi) to my eMac (which does not) via a crossover ethernet cable. The laptop is behind a router as 192.168.1.131, and the eMac is behind the laptop as 10.42.43.1 . The laptop is running Ubuntu 9.10 (Karmic). I achieved the shared connection through NetworkManager Applet. I right-clicked on the network icon at the topright, went to Edit Connections, selected the Wired connection named "Auto eth0", clicked "Edit...", went to the "IPv4 Settings" tab, and selected the Method "Shared to other computers". The eMac can now access the Internet. Now I want to enable port forwarding. There's a game I want to play that needs port 6112 forwarded (both TCP and UDP) in order to host games. I set up the router to enable port forwarding for 192.168.1.131 (the laptop), but port forwarding still isn't available on the eMac. I suppose I need to pretend my laptop is a router and configure port forwarding on it, indicating that incoming connections to the laptop (192.168.1.131) should be forwarded to the eMac on the shared connection (10.42.43.1 ). Thus, packets coming into the router on port 6112 would be redirected to the laptop (by the router), then to the eMac (by the laptop). My question is, how would I do that on Ubuntu (in light of NetworkManager's presence)? Also, if I can't get this to work, does anyone mind hosting a comp stomp? :D

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• Install Ubuntu 10.10 from loopback mounted ISO image

  - by Zifre

  I have a laptop with a faulty BIOS that has stopped booting from CDs even though it supports it (and it doesn't support booting from USB drives). I am trying to install Ubuntu 10.10 on it. I already had 9.10 installed. I tried using Kexec, but it refused to accept the kernel image. Eventually I found this page which shows how to make GRUB 2 boot from an ISO file. That worked fine, and I am now running the live image from the file. (If I can get this to work, it will be my new preferred way of installing Ubuntu, as it saves CDs and boots much faster.) However, I can't install it. The installer won't make changes to the hard drive, because the partition containing the ISO is mounted (and can't be unmounted because it is in use). Even if I only choose to use other partitions that are not mounted, the installer refuses to go any farther. Clearly, it should be possible using other partitions on the same disk. Is there any way to work around this issue or force the installer to go ahead?

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• Installing 64-bit Ubuntu alongside 32-bit Ubuntu?

  - by Macha

  I have a 64-bit processor in my PC, but because of worries over application compatibility, up until now I have been using 32-bit Ubuntu (and 32-bit Vista because Dell wouldn't sell me 64-bit with my PC). Is it possible for me to install 64-bit Ubuntu alongside 32-bit ubuntu and 32-bit Windows Vista, so I can choose between them at boot and share data, and without uninstalling my 32-bit Ubuntu? My partitions are as follows Drive 1: 10 GB Vista recovery partition (E:), 240 GB Windows NTFS parition (230 GB used, C:). Drive 2: 167 GB Windows NTFS Partition (130 GB used, D: ), 8 GB swap partition, 13 GB / partition (6 GB used), 62 GB /home partition (20 GB used).

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• Unable to connect to shared (iscsitarget) dvd-rw drive on ubuntu karmic box

  - by develop7

  Preface: I have desktop with DVD-RW drive that runs primarily on Linux (namely Ubuntu 9.10). My wife has netbook that rins Windows XP with no cd/dvd drive. There's also LAN through our ADSL modem/router. I've "ported" (actually, I've just grabbed sources and ran dpkg-buildpackage) iscsitarget package from Ubuntu Lucid to Karmic (here are packages), installed it (sudo aptitude install iscsitarget; sudo m-a a-i iscsitarget) and configured it in the following way (/etc/ietd.conf): Target iqn.2020-01.local.develop7-desktop:storage.disc.dvdrw Lun 0 Path=/dev/sr0,Type=blockio #I've skipped commented lines Also, I've opened port 3260 with ufw: $ sudo ufw status | grep 3260 3260 ALLOW 192.168.1.0/24 But (here's the trouble) I still can't connect to this target from Windows box. Microsoft Software iSCSI Initiator tells "Logon failure" upon connect attempt. After unsuccessful connection attempt I've noticed this line in dmesg | tail's output: iscsi_trgt: ioctl(299) invalid ioctl cmd c078690d So the question is — what's wrong with my config/iSCSI target/whatever else? Or, in short — what I'm doing wrong? Thanks in advance.

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• Unable to connect to shared (iscsitarget) dvd-rw drive on ubuntu karmic box

  - by Develop7

  Intro I have desktop with DVD-RW drive that runs primarily on Linux (namely Ubuntu 9.10). My wife has netbook that rins Windows XP with no cd/dvd drive. There's also LAN through our ADSL modem/router. I've "ported" (actually, I've just grabbed sources and ran dpkg-buildpackage) iscsitarget package from Ubuntu Lucid to Karmic (here are packages), installed it (sudo aptitude install iscsitarget; sudo m-a a-i iscsitarget) and configured it in the following way (/etc/ietd.conf): Target iqn.2020-01.local.develop7-desktop:storage.disc.dvdrw Lun 0 Path=/dev/sr0,Type=blockio #I've skipped commented lines Also, I've opened port 3260 with ufw: $ sudo ufw status | grep 3260 3260 ALLOW 192.168.1.0/24 Problem But (here's the trouble) I still can't connect to this target from Windows box. Microsoft Software iSCSI Initiator screams "Logon failure" upon connect attempt, and, respectively, fails to connect. After unsuccessful connection attempt I've noticed this line in dmesg | tail's output: iscsi_trgt: ioctl(299) invalid ioctl cmd c078690d Question So the question is — what's wrong with my config/iSCSI target/whatever else? Or, in short — what I'm doing wrong? Thanks in advance.

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• Updating Dell PowerEdge firmware on Ubuntu?

  - by Shtééf

  The company I work for recently got hands on a batch of second hand PowerEdge SC1425 machines. We'd like to put these to good use. Our operating system of choice is Ubuntu Server 10.04 64-bit, which installs just peachy on this type of machine. Now I'd like to install the firmware updates from Dell, which are apparently marked as recommended. This includes the updates for the BIOS, the BMC, and possibly some other hardware. I find it incredibly difficult to locate the files on the Dell website, and install any of them on an Ubuntu system: I downloaded the file OM_6.2.0_SUU_A01.iso. I believe I've read that the SUU DVD should be able to update any recent PowerEdge. Is this correct? Is this the latest version? Besides the version number, does A01 have any meaning? Is this image bootable? (At the moment, I just nosed around with a loop device mount.) Running /bin/bash ./suu from the DVD, I get: # /bin/bash ./suu ./suu: line 262: ./java/linux/i386/bin/java: No such file or directory The file exists and is executable, though. But I cannot execute it directly from the shell either.

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• Ubuntu-VirtualBox-LikeWiseOpen network disaster

  - by Sergio

  I've a virtual machine on VirtualBox 4.1.4 with Ubuntu 11.04. It was working perfectly, but after a reboot something really wrong happened: I wasn't able to connect to the internal network (same for NAT). $ sudo dhclient -v Internet Systems Consortium DHCP Client 4.1.1-P1 Copyright 2004-2010 Internet System Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Error creating socket to list interfaces; Permission denied Can't get list of interfaces. The network interface is PCnet-FAST III. Additional information: $ uname -a Linux LinuxFileServer 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux Any ideas? Thanks EDIT: $ sudo ifconfig -a eth1 Link encap:Ethernet HWaddr 08:00:27:af:f2:c7 indirizzo inet6: fe80::a00:27ff:feaf:f2c7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisioni:0 txqueuelen:1000 Byte RX:0 (0 B) Byte TX:3870 (3.8 KB) Interrupt:10 lo Link encap:Loopback locale indirizzo inet:127.0.0.1 Maschera:255.0.0.0 indirizzo inet6: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisioni:0 txqueuelen:0 Byte RX:960 (960.0 B) Byte TX:960 (960.0 B)

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• Wireless disconnects at random after upgrade to Ubuntu 10.4

  - by Daniel Elessedil Kjeserud

  After upgrading my home server from Ubuntu 8.10 to 10.4 my wireless seemingly drops out, even though my IRC client keeps it's connection to the servers, so it looks like the machine just stops taking wireless requests. A ping will give a me this Request timeout for icmp_seq 27 ping: sendto: Host is down After a while the machine just starts responding again, without any interaction from me. When the machine comes back, this is what dmesg gives me [ 18.296288] wlan0: direct probe to AP 00:1b:63:22:a4:5f (try 1) [ 18.296350] wlan0: deauthenticating from 00:1b:63:22:a4:5f by local choice (reason=3) [ 18.296440] wlan0: direct probe to AP 00:1b:63:22:a4:5f (try 1) [ 18.298697] wlan0: direct probe responded [ 18.298706] wlan0: authenticate with AP 00:1b:63:22:a4:5f (try 1) [ 18.306836] wlan0: authenticated [ 18.306886] wlan0: associate with AP 00:1b:63:22:a4:5f (try 1) [ 18.309396] wlan0: RX AssocResp from 00:1b:63:22:a4:5f (capab=0x411 status=0 aid=2) [ 18.309402] wlan0: associated [ 18.310187] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 18.447742] apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16ac) [ 18.447748] apm: overridden by ACPI. [ 19.163282] padlock: VIA PadLock not detected. [ 28.352022] wlan0: no IPv6 routers present kjes@brin:~$ lspci 02:07.0 Network controller: RaLink RT2561/RT61 rev B 802.11g It's on a wireless network with WPA2, the machine worked without any problems on the same wireless network since Ubuntu 8.10 was the most resent version, and there have been no changes to my network recently. Even though the server drops out, everything else on the network keeps working like normal.

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• X-ming, Ubuntu apps - getting the Ubuntu style/theme to load

  - by user5402

  I am running X-ming on Windows 7 and using putty to ssh into an Ubuntu system. On the Ubuntu system I use the command: $ gnome-terminal & to display a terminal back on the Windows box. When I do this I don't get the standard Ubuntu style, i.e. dark purple background, Mono font, solid cursor (which I've configured in the Gnome Control Center.) Instead I get a very plain style - white background, blinking cursor, very small font. However, if I run gnome-control-center and then click on, say, the Keyboard icon, the terminal window will be reconfigured with the Ubuntu style with my customizations (e.g. block cursor vs. blinking cursor.) Just starting one of the control applets seems to trigger this style change. My question is: How can I trigger this style change more directly - without having to launch the Gnome Control center and launching one of the configuration applets?

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• Port forwarding + shared connection with Ubuntu

  - by Joey Adams

  Because my wireless router's ethernet ports are defective, I set up a shared wireless connection from my laptop (which has wifi) to my eMac (which does not) via a crossover ethernet cable. The laptop is behind a router as 192.168.1.131, and the eMac is behind the laptop as 10.42.43.1 . The laptop is running Ubuntu 9.10 (Karmic). I achieved the shared connection through NetworkManager Applet. I right-clicked on the network icon at the topright, went to Edit Connections, selected the Wired connection named "Auto eth0", clicked "Edit...", went to the "IPv4 Settings" tab, and selected the Method "Shared to other computers". The eMac can now access the Internet. Now I want to enable port forwarding. There's a game I want to play that needs port 6112 forwarded (both TCP and UDP) in order to host games. I set up the router to enable port forwarding for 192.168.1.131 (the laptop), but port forwarding still isn't available on the eMac. I suppose I need to pretend my laptop is a router and configure port forwarding on it, indicating that incoming connections to the laptop (192.168.1.131) should be forwarded to the eMac on the shared connection (10.42.43.1 ). Thus, packets coming into the router on port 6112 would be redirected to the laptop (by the router), then to the eMac (by the laptop). My question is, how would I do that on Ubuntu (in light of NetworkManager's presence)? Also, if I can't get this to work, does anyone mind hosting a comp stomp? :D

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• Kernel Memory Leak in Ubuntu 9.10?

  - by kayahr

  After some days of work (Using suspend-to-ram during the night) I notice I loose more and more available memory. Even when I close all applications the situation doesn't improve. I even went down to the command line and closed ALL running processes except the init process and the bash I'm working in. I unmounted all these ram disks which Ubuntu is using, I even unloaded all modules which could be unloaded. But still "free" tells me that 1 GB of RAM is used (without buffers/cache). In "top" there is no visible process which occupies all this memory. The only way to free the memory is restarting the machine. How can I find out where I lose all this memory? Is there a known "suspect" who can cause a problem like this? I'm using Ubuntu 9.10 64 bit on a Dell Latitude E6500 (4 GB RAM) with the latest closed-source nvidia driver and Gnome with Compiz. The applications I use most of the time are firefox and eclipse. Any hints how I can find the problem? I'm not a kernel hacker so if the solution is patching the kernel or something like that then I might be out of the game...

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• VPN on a ubuntu server limited to certain ips

  - by Hultner

  I got an server running Ubuntu Server 9.10 and I need access to it and other parts of my network sometimes when not at home. There's two places I need to access the VPN from. One of the places to an static IP and the other got an dynamic but with DynDNS setup so I can always get the current IP if I want to. Now when it comes to servers people call me kinda paranoid but security is always my number one priority and I never like to allow access to the server outside the network therefor I have two things I have to have on this VPN. One it shouldn't be accessiable from any other IP then these 2 and two it has to use a very secure key so it will be virtually impossible to bruteforce even from the said IP´s. I have no experience what so ever in setting up VPNs, I have used SSH tunneling but never an actuall VPN. So what would be the best, most stable, safest and performance effiecent way to set this up on a Ubuntu Server? Is it possible or should I just set up some kind of SSH Tunnel instead? Thanks on beforehand for answers.

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• Ubuntu 9.10 LiveCD stalls after "Install Ubuntu" selected from boot menu on eMachines

  - by nicorellius

  I am trying to install Ubuntu 9.10 from the ISO on a CD (it needs to be this version) on an eMachine with a brand new Seagate hard disk. The CD boots OK, and I choose the language. Then I am presented with the boot menu: Try Ubuntu Install Ubuntu etc I have tried the top two choices several times (trying Ubuntu and installing it), but each and every time the installation stalls and the disc stops spinning right after I hit enter after choosing the option I want. I have tried different CD/DVD drives, changing the jumpers on both CD drives, different hard drives, and nothing works. Maybe there is a BIOS setting that is choking the installation? Any help would be appreciated. Edit - I just tried running the hard drive as the master on the primary IDE and the CD drive as the slave on the primary with the same results. Maybe flash the BIOS?

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• How do I reinitialise a failed RAID 5 drive using terminal on Ubuntu Server

  - by Stephen

  I've currently put together a new system and part of that has been creating a software RAID 5 using 'mdadm' in Ubuntu Server. I successfully got to the point where I create the array using: sudo mdadm --create --verbose /dev/md0 --level=5 --raid-devices=4 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1 I left it to do its thing overnight then used the following command to check on it: watch cat /proc/mdstat To which the following was returned: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid5 sdd1[4](S) sdc1[2] sdb1[1] sda1[0](F) 5860535808 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/2] [_UU_] unused devices: <none> It appears that one has failed (and I'm not too savvy with why another is a spare). So, just to be sure that something else isn't amiss I wanted to try and re-engage the failed drive. Can someone explain how I can do that and what I should do with the spare (if anything). And also how do I know when synchronisation is complete? The tutorial I used to get this far is located here: http://sonniesedge.co.uk/2009/06/13/software-raid-5-on-ubuntu-904/ Many thanks! p.s. Here is some extra information that may help: sudo mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Mon Jun 18 21:14:21 2012 Raid Level : raid5 Array Size : 5860535808 (5589.04 GiB 6001.19 GB) Used Dev Size : 1953511936 (1863.01 GiB 2000.40 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Mon Jun 18 21:50:26 2012 State : clean, FAILED Active Devices : 2 Working Devices : 3 Failed Devices : 1 Spare Devices : 1 Layout : left-symmetric Chunk Size : 512K Name : myraidbox:0 (local to host myraidbox) UUID : a269ee94:a161600c:fb1665e7:bd2f27b3 Events : 13 Number Major Minor RaidDevice State 0 0 0 0 removed 1 8 17 1 active sync /dev/sdb1 2 8 33 2 active sync /dev/sdc1 3 0 0 3 removed 0 8 1 - faulty spare /dev/sda1 4 8 49 - spare /dev/sdd1

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• Flickering dual screens in Virtual Box Ubuntu 13.10 Guest

  - by alexleonard

  I have Ubuntu 13.10 x64 installed as a guest in VirtualBox (under a Windows 8.1 host) and have the settings for the virtual machine setup to run with a monitor count of 2, 128MB video memory and 3D acceleration enabled. In my guest I have the virtual box additions installed (which allowed me to have two 1920x1080 screens). Here's a screenshot of my VM settings. My laptop is an Asus N550JV which has both Intel's HD Graphics 4600 GPU and Nvidia's GeForce GT 750M. By default though I believe the Intel GFX card is being used to render the VM. When I boot up the VM it loads perfectly on dual screens, however whenever I move the mouse from one screen to the other (I have a Dell S2340L running over a HDMI connection as a second screen) the screen flickers. I've tried a variety of settings changes in both Ubuntu and the VM settings, but cannot seem to stop this screen flicker. I also used the NVidia control panel in Windows to force the dedicated graphics card to always be used but found that the display driver sometimes crashed whilst working in the VM, resulting in my VM session being destroyed, so I figured it's better to stick with the Intel GFX as that appears to be more stable. I also tried without 3D acceleration but that was much worse, and if I ran the VM with a low amount of graphics memory it really struggled. Here's my dmesg output: http://pastebin.com/1LJuYWMj (not sure if this is helpful in this situation). I read some posts suggesting changes to /etc/X11/xorg.conf but I don't appear to have an xorg.conf file. There were also a few posts (though related to Synergy) suggesting running xset -dpms but this command doesn't appear to have had any effect for me. As an additional note, I'm finding that window drawing in the guest is a little laggy/glitchy. For example, quickly scrolling through a web page may result in parts of the viewport displaying original content. Certainly I notice drawing issues most in the web browser, but it also impacts other software with parts of the window not being drawn when, say, switching between accounts in thunderbird. Any suggestions greatly appreciated!

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