I've read some stuff that says that Btrfs fsck is run every time on bootup. Is this still true? If so how can you tell when it runs or does not run on bootup? I just installed Ubuntu Raring Ringtail with Btrfs.
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When working remotely I set a server to force an fsck at boot time with the sudo touch /forcefsck command and rebooted.  After it restarted I checked in /var/log/fsck for the results of the disk check. Both checkfs and checkroot said: Nothing has been logged yet  So where is it saving the results?
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I saw several bugs and error messages when I was looking by chance into the tool called "logs".  Being a newbie in Ubuntu I have no idea how to deal with these bugs, where to report them or how to fix them.  Any help to guide me here?  The bug I have (which is listed under important) reads:  [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to version: 0x52 (or later)
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Is there any software like unetbootin in Ubuntu?  I cant install or run unetbootin-494 even though I already set it to allow executing files as programs.
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I'm one of the lucky (?) guys who managed to get a new MacBook Pro 2016 (the version that introduced the Touch Bar).  This MBP model does not have a boot chime by default.    , specifically going to Terminal.app and typing in:  sudo nvram BootAudio=%01  Unfortunately for me, this fix does not work on my own machine. .  My guess is that it's a firmware fix or enhancement that got rid of BootAudio as an option.  Does anyone know a different option to re-enable the startup chime?
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I think this is kernel dependent and probably will change over time depending on the kernel a release uses, correct me if wrong  I'd like to know two things for all the currently supported Ubuntu releases:  How many maximum CPUs can Ubuntu handle (by default) at the same time with a standard desktop kernel? Is that count different from a server kernel and 32bit/64bit systems?  Where can I find that information on my system?
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I'm having some periodic issues running a particular application, XBMC. If I use XBMC regularly I don't seem to have any issues but if I leave it unattended for more than about 12 hours I need to reboot to get it working again.  I know a scheduled reboot is NOT the answer but until I can figure out the problem I need to schedule a reboot each morning so my wife can use it if I'm away and it doesn't get thrown out the window :)  Any takers?
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If you are root, and you issue   rm -rf /    Then how far can the command go? Can you recover data from this kind of an action? Even after the binaries are gone, would the running processes still be active? What would it take to make the same physical machine boot again? What files would you need to restore to make this happen?  I could try this on a VM and see, but I want to know the rationale behind what to expect if I do this.
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I have read this  from  .It says that other Ubuntu flavors of LTS get only 3 years of support. Is this true?   This question is not a duplicate of the linked post as I want to know support time for only other Ubuntu flavors.
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Is there a list of available events that can be used for Upstart?  For example start on local-filesystems so local-filesystems is an event but when is it triggered and what other events are there?
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I'm just wondering what I can look forward to in the next Ubuntu version.  In this case it's 16.04.  I also want to be able to speculate on what it's probably going to break and whether or not I should go through the hassle of writing some code that wont last more than a few months.  Where does one find an official feature list, or (as it appears to be) is there none?
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I want to install the latest Firefox on my Ubuntu (64bit) box.  What is the best way to do this? Is there a specific update site or should I download the binaries manually? If doing manually, in which directory should I put the files? In my home directory, or is there a better place?
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Anyway....there is Ubuntu 12.04 LTS and the normal 12.10 version. Is that the same with Lubuntu? On their site, for some reason, they seem to be promoting the 12.10 version while for me an LTS is always more appealing. I am wondering if they have the same ideology as the Ubuntu team.  UPDATE: Is it okay to talk about Lubuntu here at all? I understand that it is a flavour of Ubuntu...but still. Are they 2 very different teams?
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On Ubuntu, When trying to open Firefox it is saying that it is already running but not responding. I am on a system where I dont have access to view the root.  I have had this issue before and fixed it but I dont remember how. I know before I had to delete a file but I dont remember what or where.
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I want to convert the 3TB 80% full ext4 block device into btrfs and I want to estimate the time it will take. I understand that this process is disk-bound rather then cpu- or memory-bound. So can anyone explain me how long it will take in units of time it takes to read/write the whole volume?
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I have a desktop running ubuntu 10.04  I want numlock to be turned on initially.  What do I have to change to accomplish this?  ~~edit~~  I checked in my BIOS.  It was already set up to have the numlock turned on initially.  Yet it isn't being turned on initially.  I have a USB keyboard: would that break this functionality?   Or, should I ask elsewhere (superuser, perhaps) about how to get that BOIS setting working properly?
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One of my Ubuntu 10.04 servers is giving me trouble. When I run fsck.ext4 -n /dev/sda5 it tells me there are errors in the free inode count, free block count, and more.  I have tried:  touch /forcefsck   Also tried:  shutdown -rF now   and still, after reboot, I see errors.  I also just checked on my eeePC netbook, Ubuntu 10.10, and have the same issue!  How can I force a really "forced" "forceful" "seriously fix my filesystem" fsck of the "/" filesystem on reboot?  Clarification: I run fsck.ext4 -n because it's a mounted filesystem, to check if there are errors. This tells me that there are. I thought that the automatic fsck every 30 mounts during the boot-up process is precisely to take care of errors in the root filesystem. But it doesn't do it in my case. I could reboot with a LiveCD and fix the errors, and then reboot again, but that's some serious downtime for a live server. A reboot, auto fsck, then continue booting is much more sustainable on a live server, and I believe should be the right behaviour.  Additional info: Here is the output. It looks like something that the autofsck would fix, doesn't it?  root@server:~# fsck.ext4 -n /dev/sda5 e2fsck 1.41.11 (14-Mar-2010) Warning!  /dev/sda5 is mounted. Warning: skipping journal recovery because doing a read-only filesystem check. /dev/sda5 contains a file system with errors, check forced. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong (1849368, counted=1948909). Fix? no  Free inodes count wrong (545504, counted=552134). Fix? no   /dev/sda5: ********** WARNING: Filesystem still has errors **********  /dev/sda5: 116752/662256 files (0.2% non-contiguous), 795324/2644692 blocks
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Is there a list of Ubuntu versions with default corresponding Linux kernel versions somewhere?  I would specifically like to know the most recent version of Ubuntu that still used Linux Kernel 2.x.