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• Trying to get back seamless mode on my VirtualBox

  - by Newben

  I am trying from some days to activate again the seamless mode on my VirtualBox(using Ubuntu 12.04 on an osx device), which was correctly set till now but which isn't working anymore. I have had already this problem but then I had to reinstall a new disk on my VB. I tried everything I know : installing it by clicking on the 'devices' item in the nav bar of VB's app, I created a new dir in /media and then tried to mount the /dev/sr0. When running sh ./VBoxLinuxAdditions.run, it installed correctly But when rebooting my machine, I always have the same problem. Does anybody knows how to activate again Seamless Mode ?

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• Fix hibernate on Thinkpad X60 with 12.04 Precise Pangolin

  - by ddaa

  I own a ThinkPad X60, hibernate used to work on 10.04 Lucid Lynx, but no longer works correctly on 12.04. I am aware of how to enable hibernate in Power Manager. The problem here is, in the default configuration, pm-hibernate works, but the system fails to resume correctly. There is no video glitch, black screen or other. The resume process just freezes on the Ubuntu splash boot after a few seconds of disk activity. Is there a way to fix the system configuration so hibernates works again?

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• Lost /boot partition

  - by s3v3n

  Recently I installed Windows XP on my machine where I had only Ubuntu. The problem is that I had my /boot on a separate, 200 Mb partition at beginning of the hard-disk (the leftmost). Installing windows, it said that it can't write MBR because there's an unknown partition, so I formatted that partition as NTFS, and I could finally get windows installed. Now I want to restore that partition so I can use my Linux keeping both systems. Now should I install grub2 there, or it's OK by restoring partition data? If the first is the correct answer then provide me a little tutorial on installing it. Keep in mind that there was my /boot folder.

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• No dual boot menu

  - by Christian Galo

  I formatted all of my disk and installed Ubuntu on my computer. I immediately partitioned, from an Ubuntu live CD, my hard drive, creating an NTFS partition for for Windows. After successfully doing so, I went on to install windows 8.1. After I installed Windows 8 in the new partition and turned off my PC and turned it on again the option to chose which Operating system I wanted to use didn't appear, loading Windows like if Ubuntu didn't exist. How can I have the option to chose which operating system I want to run or at least from which partition to boot from when I start my computer? EVERYTHING IS OKAY WITH MY OPERATING SYSTEM The only thing I need is for ubuntu to appear as an option on the boot menus

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• How to completely turn off session saving?

  - by Thorn

  Hi all, I opened System > Preferences > Startup Application > Options and clicked on Remember currently running Applications. I suppose this makes Ubuntu memorize (save a list on some place in disk) all currently running applications and when you reboot your computer, the OS starts with everything in that list. Now I want to get rid of it. Of course I can close all applications which I do not want to start in startup, and click Remember currently running Applications again, but this doesn't seem to work as expected. For example, Yakuake opens differently if I do that. What I want is to completely turn off session saving. Maybe I can delete the stored information somehow?

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• Welcome to our Friday tips series!

  - by Chris Kawalek

  Today we're starting a brand new blog series. For your Friday afternoon reading, we'll be posting a technical tip or question and answer on a technical topic. We'll start by introducing ideas on our own, but we'd really like it if you were involved and asked us questions via Twitter! Tag your tweet with #AskOracleVirtualization and we'll consider your question for the blog. Today's tip is on Storage and Oracle Virtual Desktop Infrastructure: Question: I run Oracle Virtual Desktop 3.4.1 on Solaris and use a local ZFS storage pool.  How should I configure my ZFS ARC cache?  Answer by John Renko, Consulting Developer, Oracle: Oracle recommends about 5G of ARC cache per template in use to achieve up to a 90% disk read offload. Set your ARC min=max to reserve the maximum amount of your remaining memory for your running VMs. In /etc/system: set zfs:zfs_arc_min = 5368709120 set zfs:zfs_arc_max = 5368709120 The amount you need to reserve will depend on your template but this has proven to be a great start for a typical windows 7 VM running productivity applications.

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• Installing along side of Windows 8

  - by Jake

  It appears as though many people are having problems installing Ubuntu along side Windows 8. My problem, however, seems to be sufficiently different to be unique among such problems. I can't get the Ubuntu 12.10 live-USB installer to run. When I boot I get the following four options: Run from this USB Install to disk Check memory (I can't remember the last one) I have tried the top two. Both result in the screen going black briefly then windows 8 booting as per usual. Does anyone know how I may manage to overcome this problem?

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• How to convert mkv to dvd or avi

  - by nathanvda

  I have some mkv files, and while Totem plays them perfectly, when i use Devede to burn them to dvd it all gets messed up: the video is ok, but the audio is out of sync. I did see that Devede does write my dixv avi files correctly to disk. So i am thinking what the best way could be to convert my mkv for playback on dvd? I was thinking maybe converting them to avi first? But i did not find a good way for that to happen. What do you suggest?

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• Trouble installing 12.04 from cd, blank screen with cursor

  - by Master Morality

  I should preface this with saying that this is not my first rodeo. I started playing with Linux in 1999 (Red Hat) and I'm currently typing this on a ThinkPad running 12.04... When I put in the live cd, I boots, and I can get to the option menu to decide whether to install/run etc, but at any point beyond that I get only a single caret. I can type stuff in, but it goes no where. I've tried the usual stuff like running with nomodeset (thinking it was the intel HD400 graphics, but it is integrated graphics...) here is the setup: ASUS p8z77 pro (with the Atheros AR9485 wifi supposedly, but I'm not that far yet) i7 3370k 8gig X 2 G.Skill Crucial M4 (256 gig) LG Super-multi DVD re-writer no video card UPDATE: I though may be it was a bad image on the CD, so I downloaded another iso, and used a USB disk. now it boots to a blank screen. I can see the "press any key to get options" screen, but after that, it just goes to a blank screen.

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• Ubuntu 11.04 windows XP dual boot problem

  - by Bernie

  I have installed Ubuntu 11.04 direct from installation disk in a separate partition alongside an existing Windows XP installation. Ubuntu operates fine. I can see the old XP file system and the other network computer and access the internet. The problem is when the computer starts I get the boot selection list for Ubuntu or XP; but I am not allowed to select Windows XP (I cannot scroll down the list with tab or arrows keys). This would be fine for me but the computer is used by other people who are only familiar with windows XP at the moment. I have downloaded and run Boot Repair. Below is the link to the resulting data. http://paste.ubuntu.com/1082944/ I hope you can help solve this problem. I look forward to hearing from you. Kind Regards Bernie.

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• HELP: I Broke Ubuntu By Uninstalling Compiz

  - by tSquirrel

  I'm still getting used to Linux, having come from Windows. I was receiving an error that "compiz" had crashed a few times so I figured I'd uninstall it. sudo apt-get remove compiz sudo apt-get install compiz I logged out then back in, after that, the GUI was totally gone and I have no idea how to get it back or what I need to do to restore the GUI to what it was before I killed poor Compiz. GUI was pretty much unmodified after a fresh install of 14.04 How can I fix it? I'm not even sure how to get to a terminal or anything. The login screen looks normal, but after logging in, it's a totally bare desktop with my backround and a few icons. No Dash, toolbar, etc. Hot Keys don't seem to work either (Super = Dash doesn't work, etc); although I did accidently open "Disk" UI. Not sure how. Please Help! Right now I'm working off my W7 dualboot.

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• My laptop shuts down when I remove the charger

  - by Hakim0

  Laptop shuts down when charger is removed. As well I get a message when booting up saying disk drive for /media/3936-3939 is not ready or not present. About a week ago I was trying to install a matlab iso file using mount commands etc... I tried mount, fuseiso, and UNETbootin. I have a feeling this may have something to do with message I'm getting from booting up. If anyone can point me in the right direction or help me out. Many thanks.

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• G5 quad core will not boot from Ubuntu CD

  - by Steve Howard

  I have a PPC G5 Quad Core with Leopard on one hard drive and I want to install Ubuntu on a second hard drive. The second drive is installed and formatted as a Mac OS Extended (Journaled) drive. I have had no success booting from a CD or DVD with various PPC versions of Ubuntu using any of the suggested keys such as "C, Option, or anything else. Booting into open firmware doesn't work as the system can't find the \install\yaboot file. I am using various CD's burned as iso disk images, but none will boot. I have reset the PRAM, etc, to no avail. Beginning to get very frustrated. Can someone shed some light and provide me with a command line in open firmware that will work, or else direct me to a confirmed PPC bootable version of Ubuntu please? I'd appreciate any help you can provide....

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• grub2 update-grub puts wrong UUID in grub.cfg for system with separate /, /boot and /home partitions

  - by keepitsimpleengineer

  It is putting in the UUID for the boot partition and not the / (root) partition. It's grub2 (1.99-21ubuntu3.1) on Xubuntu 12.04. UPDATE: ? I ran Boot Info Script 0.60, here are results? The boot info script is too big for askubuntu, but is here. The system not booting is on /dev/sdh. The booted disk, Xubuntu 12.04, is /dev/sdb. /sdh2/etc/fstab is at line 1073. The incorrect UUIDs are at line 945 and 954. "blkid" putput is at line 318. It is putting the UUID for "boot" versus "root" in boot.cfg, line 937. I have noticed that the relationship between physical drives and names in /dev vary depending on which system is booted.

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• More problems in one

  - by Susie

  Yesterday I installed Ubuntu 12.04 because of some previous problems. I had to recover files through Photorec. But it filled my whole disk overnight and didn't even finish. When I turn on my notebook, there's an error The system is runnning in low-graphics mode (don't know if it's somehow connected with it). I need to delete those recup_dir folders, but also I need to finish recovering and get through the error. So I'm absolutely desperate. I hope that I writed it ok. Thanks in advance.

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• Swap File, Mount point, GRUB2

  - by Mike Green

  Windows 7 with 1gb RAM Hi. I am installing Ubuntu 12 onto a 20gb ext3 partition. I have 100gb free disk space. The install asked me to choose a swap space. Do I have to allocate another partition for the swap space, and if so, what size should it be? I installed without allocating a swap space. Can I allocate a swap space after the install? The install asked me for a mount point. I chose /. Is this okay? I also want to ensure that GRUB2 will be installed within the UBUNTU partition. Is there an option for this on the install? (I will use EasyBCD to select Windows7 or UBUNTU.) Thanks for your help, M...

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• Problems after installing Ubuntu LiveUSB on my 2nd HD

  - by user113106

  I decided to create a Ubuntu USB installer using the Universal USB Installer, selecting a Ubuntu 12.10 ISO. I selected my D: drive, my NON-windows7 carrying drive as install. After this I Re-booted my system and my PC began to Run the Ubuntu Boot-startscreen every time I power up the machine, giving errors like this: Root=Unknown I used my girlfriend's laptop to create, on the exact same way, a real! USB Ubuntu installer. Booting from that USB, picking the option Run Ubuntu from this USB I get the following error: http://postimage.org/image/63qkv98c1/ Let's try installing it from that USB to a Hard-Disk: http://postimage.org/image/usqbwymfx/ As I said: I do not have the Option to pick my Boot-section, at this very moment I can only access to the Ubuntu installation and nothing else. I've read about 90% of other Questions that could've been related, but I could not find a solution. BTW I'm running a Acer Aspire 2Quadcore 4gb DDR 2 Ati Radeon HD, 64bit and I've set my Bios OS-usage from Windows to "Others"

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• How do I save to an NTFS partition?

  - by RADHAKRISHNAN

  I was using ubuntu 11.04 on my Laptop. While installing it from a DVD, I have created a 10 GB NTFS partition at the beginning of the hard disk, as primary. All other partitions ( swap, a ext3, a ext4 and a FAT32 ) are created in as logical in the extended partition. All were working well in ubuntun11.04. Now the system was upgraded to ubuntu 11.10 via internet and was sucessful. But unable to either create folder/files or to write to existing files in the said NTFS partiton. But files in the partition can read - means mounting done. Same is the case even if logged in as root also. Fortunately no such problem with other partitions including FAT Why it is so, please help.

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• ec2 instance won't boot!

  - by TheToolBox

  So I had a server lose connection while updating to 14.04LTS. Foolishly, it ended up getting rebooted, and now I'm here. I disconnected the volume and mounted it on another system, chrooted it, and updated the kernel. Still no dice. Any idea what the problem could be? Thanks in advance! The instance log is below: ******************* BLKFRONT for device/vbd/2049 ********** backend at /local/domain/0/backend/vbd/3005/2049 Failed to read /local/domain/0/backend/vbd/3005/2049/feature-barrier. Failed to read /local/domain/0/backend/vbd/3005/2049/feature-flush-cache. 16777216 sectors of 512 bytes ************************** [H[J Booting 'Ubuntu 14.04 LTS, memtest86+' root (hd0) Filesystem type is ext2fs, using whole disk kernel /boot/memtest86+.bin ============= Init TPM Front ================ Tpmfront:Error Unable to read device/vtpm/0/backend-id during tpmfront initialization! error = ENOENT Tpmfront:Info Shutting down tpmfront xc: error: panic: xc_dom_core.c:621: xc_dom_find_loader: no loader found: Invalid kernel xc_dom_parse_image returned -1 close(3) Error 9: Unknown boot failure Press any key to continue...

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• Fresh install of 12.04 Kernel panic

  - by user70260

  I am attempting to install Ubuntu 12.04 on my computer. After the Ubuntu splash screen, the computer throws up this error: sr 2:0:1:0: [sr0] Unhandled error code Kernel panic - not syncing: Attempted to kill init! PID: 1, comm: run-init Not Tainted 3.2.0-23-generic #36-Ubuntu The computer hardware is as follows: Core 2 quad 9400, 8gb RAM, GTX 275, 3 Mech HD, 2 SSD, Win 7 install. I would like to dual boot Ubuntu on this computer if possible. I did try placing this disk in my laptop and booted successfully which leads me to believe the fault lies with the desktop. Under windows all hardware seems to work ok. Any ideas?

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• default mount point changed for external HD

  - by JhmL

  The default mount point for my external HD changed when upgrading from 13.04 to 13.10. Now the username is added as an extra level before the hd label. So it used to be /media/nameofhd and now it became /media/username/nameofhd This breaks a lot of links I have set up to this disk. I know that I can mount it manually and even automatically through /etc/fstab. What I want to know is why this behaviour changed and how I can change it back to the original? blkid and fdisk don't show anything suspicious. thx!

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• Ubuntu won't stay installed

  - by tommythm227

  I recently experienced OS problems with Windows 8 so I decided to wipe my hard drive and install Ubuntu using a usb boot. I am able to "Try Ubuntu" or choose to install instantly, however, after installation it asks me to restart my computer but when I do this I receive the same installation options I originally had, "Try Ubuntu", "Install", "OEM Install", "Repair Disk". I initially thought this was the result of leaving the boot usb in, so I tried reinstalling, but now I just receive a message saying "No boot disc or boot disc failed". This happens with any type of install I do, I've tried clearing the hard drive multiple times, making a new boot usb, but nothing seems to help. I've tried reinstalling windows, but I encounter the same problem, without the usb I get an error. I have an Acer Aspire M3470, I cleared my hard drive and attempting to install via usb boot. I have a weird BIOS menu probably because of AMD but it's been hard to find information regarding my particular BIOS menu. HERE is an image of my BIOS menu

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• FatCow and iPage real deal?

  - by Tribbey

  I need a cheap host that I can upgrade if needed for a startup. From searching, FatCow and iPage seem reliable and inexpensive web hosting services with a Unix OS and good bandwidth + disk space. I suspect they were bought from the same company. They propose to offer unlimited bandwidth/disc space and perks like AdSense/Facebook credit however, they're packages range from 1-3 years @ 3.15 USD/mo, there isn't a monthly package but they do allow you to cancel at anytime and there servers run on wind-mill generated energy which is a plus. I was suspicious because I couldnt seem to find one negative review about them, just affiliate pages until I read a review explaining they're strict policies on copywritten data. Has anyone experience with one of these two hosts?

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• Only sdb shows up when installing 12.04 on new Dell inspiron 14z

  - by Jan Korpegård

  I got my brand new Dell Inspiron 14z yesterday, but failed to install Ubuntu. I can boot from a USB stick, and it works well. When trying to install, I confirm that the laptop is connected to the internet etc (as in the 2nd picture in the installation guide: How do I install Ubuntu?). When pressing "Continue" I do not get the question on installation type (alongside/replace/something else). Instead I get a window where I can select partitions: // Picture removed due to low reputation... The problem is that I can only select sdb in the drop drop down box, and I can do do nothing with sdb (like adding partitions etc). The main disk (sda) is partitioned using Gparted the following way: // Picture removed due to low reputation As far as I understand from other threads on askubuntu, this should work... What can I do to install Ubuntu alongside with Windows 7?

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• How to fix "The system is running in low-graphics mode" error?

  - by jokerdino

  Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong drivers, incorrect or invalid lightdm greeters, low disk space, incorrect installation of graphics card like ATI and Nvidia, incorrect configuration of xorg.conf file while setting up multiple monitors among others. If you are experiencing the "low-graphics mode" error when trying to login but none of the following answers work for you, please do ask a new question and then update the answers of this canonical question as and when your new question gets answered. When I try to boot into my computer, I am getting this error: The system is running in low-graphics mode Your screen, graphics cards, and input device settings could not be detected correctly. You will need to configure these yourself. How do I fix the failsafe X mode and login into my computer? Answer index: The greeter is invalid

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