Ubuntu :: Fails To Boot Randomly?
Apr 5, 2011
this problem began some time ago and I can't quite remember how or why. This computer is somewhat new as my former HDD died and I bought some other stuff along the new HDD and it wasn't until some time later that I noticed the problems which never happened before, I had been using Ubuntu 10.10 both before and after I got the new HDD.For some reason, Ubuntu began giving error messages when I tried to run it, most often it would give them over and over unless I decided to give up and try again several minutes later. The error message was always a lot of weird things from which the only thing I could make out was
"Kernel panich - Not Synching: VF:S unable to mount root fs on unknown-block 0,0" (or something like that)I tried using other kernels but it'd give the same error message, I sometimes even used WinXP, sometimes it'd boot correctly, others it'd reboot.This became really annoying and tried with a clean install, the first few times I logged in seemed to be working fine but this morning I'm having a problem that seems even worse.When I try the now only kernel I have available it just remains unmoving from a blinking cursor screen. If I try the recovery mode I get the "Kernel panic..." errror message and when I try with Memory Test
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May 24, 2010
Anyone else experiencing the random LUKS fails? Anyone know of a solution?I filed a bugBasically I have a USB hard drive with two LUKS partitions on it (sdb2, sdb3). When plugged in, it asks for the password in Xfce (like it did in Slackware 13.0), but instead of the previous "asks twice for password" bug, now it asks once, but nothing pops up on the desktop. It's rare to see either of them put an icon on the desktop (usually nothing results).
I see /dev/mapper/luks_crypto_{UUID} get populated, so they are successfully being unlocked (LUKS), but no icon appears, and no mount point for the volume label (i.e. /media/BACKUP /media/ASUS) is populated.Does anyone know how I could produce a more useful bug report? I'm wondering if "strace startxfce" would produce anything useful or if I should alias Thunar to "strace -o /tmp/thunar-`date`.txt" would be in order.
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Jul 10, 2010
Here is my entry in the fstab:
192.168.1.11:/mnt/array1/Our_NAS media/Our40NAS nfs auto,_ne
tdev,rw,hard,users,intr 0 0
Upon reboot, sometimes it would mount automatically and sometimes it would not. I have not discovered any specific pattern. It is very random. Sometimes it would go many reboots without mounting and on the next it would mount it. I tried putting timeo paramter, played with the parameters, but still have the same issue. My laptop is connected to a wireless network. When I do mount -a or if I go to Places everything mounts great. It just simply will not mount all the time automatically upon boot, and after wireless connection is established.
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Jul 28, 2011
I installed Natty on a 5-year-old Compaq with an integrated Intel 8xx chipset, using a Polaroid TLA-01511C monitor, and the list of available resolutions varies quite a bit each time I boot. Sometimes it will only give me 1024x768, 800x600, and 640x480; sometimes it gives me a dozen resolutions ranging up to 1600x1200. Only once has it ever offered me the monitor's native resolution, 1280x800.
I'm guessing the EDID is being missent or misread each time. How can I set it to (ignore the EDID and) allow me to select 1280x800 each time? I did notice that when it was a Windows machine, it would give me the short list of resolutions when booted with the monitor off, but gave more options when booted with the monitor on. Here though, it seems to give the long list when booted with monitor off.
Here's my most current /var/log/Xorg.0.log; this time it booted with about a dozen modes available, but not 1280x800.
Code:
[35.690]
X.Org X Server 1.10.1
Release Date: 2011-04-15
[35.691] X Protocol Version 11, Revision 0
[35.691] Build Operating System: Linux 2.6.24-27-server i686 Ubuntu .....
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Jan 29, 2010
On my computer, I mount at boot time through the /etc/fstab some shares.I was working flawlessly on 9.04 and previous version.Since 9.10 version, it sometime fails to mount the share and I need to run PHP Code:sudo mount -a to get my mount shared mounted. (the command "mount -a" always work).
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Aug 25, 2010
I just recently notice that my Fedora 13 is randomly stop at boot. This is a fresh install less than a week and with all the updated kernel and software as of today. I could not get much information from /var/log/messages (only about 3 lines at the time it froze).
It froze straight after it finishes the boot sequence. I can see a mouse cursor but that's about it. The last init sequence I could see before going to X was "atd" (if that helps at all)
This install is on a single Seagate 1.5TB drive without any other drives attached to the system (I rule out if that's problem with the other hard drives)
on Gigabyte P35DS3 mobo on ICH9 port
the mobo has AHCI mode for the hard drive
I got some bad sector on the hard drive (40 sectors)
For some reason, it kept stopping when I cold boot. Once it stop and I press the reset button it normally works.
I found another forum mentioning it can be issue with the video driver. So I here's further information of my system code...
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Dec 6, 2010
I am building a 10.04.1LTS server. I am putting the /root filesystem into a Software RAID1 partition. I want to keeo my /boot partition outside of RAID.Is there a way to have a boot partition on both sda and sdb so if one drive fails the second boot partition will work away - or should this be kept in with RAID also.
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May 3, 2010
I was upgrading our lab's dhcp server to Lucid and it totally died. I have it running on a Debian recovery cd right now. I ran into a bug in gtk which I seem to have fixed, but now I have more serious errors. If I boot without a CD, I get dumped into a busybox shell after the machine fails to boot. From the live CD, I tried dist-upgrading again and it dies trying to build and install rsyslog with a broken pipe error. I am at a loss as to what to do from here short of reinstalling (which is the last option as this server has a lot of custom configs on it)
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Sep 18, 2010
I have a very strange problem with Fedora 13 on my home PC. When booting it just hangs at random points in the boot process. When it happend the first time, I thought the PC probably is completed frozen, but then I discovered that hitting the return button got the boot process going on again, but just step by step. That means on every boot I have to keep hitting the return button until gnome starts up, that's very annoying. So for any reason the boot process seems to switch to interactive mode somehow...
I already removed the kernel boot options rhgb and quiet to see, where exactly this happens in the boot process. But as I said, it seems to be completely random. Sometimes it's when "Starting udev", sometimes, when setting up eth card, when starting atd, and so on. It's different every time.
By the way, a similar thing happens when shutting down. It can take up to half an hour until the PC really shuts down. But it's usually going faster if I just keep hitting return after issueing the shutdown command (which actually looks a bit dull). But the PC finally shuts down at some point. That's not the case when booting up. I thought, maybe there's some kind of timeout problem. But even waiting for two hours, the PC does not startup without keeping hammering the return button
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Dec 4, 2010
I have a strange problem with grub. My grub boot image randomly changes sometimes into default opensuse and sometimes into penguin moving around.Is is a funny program?
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Jan 22, 2010
My Internet connection works fine when I boot Ubuntu with the CD and it does not work when I boot from the Hard Drive. It was working then it stopped. I tried to diagnose the problem but I am not familiar with Linux.
I opened a Terminal window and entered ipconfig (don't laugh ... sadly, i've been in Windows for too long) ipconfig was something that could not be found in my terminal window so i exited.
Next it was System->Administration->Network Tools. I ping'd www.yahoo.com and it said it could not find it. hmmmm. Let's see if restarting the system will fix it.
I did a shutdown and when it came back up; same problem. Ok, i really didn't think it would magically correct itself; this is Linux after all. Windows? Well sometimes you can fix things by turning them off and on. Next, another shutdown and I rebooted with the CD instead of the Hard drive and here I sit entering this help question in.
I am guessing that a file or setting got changed in /etc/someplace and I am not even sure of that. Can anyone point me in the correct direction? I am assuming that there is a setting which is correct in the CD version that is not not correct in the HD version and somehow i need to find what it is and synchronize it with the CD version.
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May 8, 2011
I downloaded ubuntu 10.10 iso, made CD, installed as dual-boot with win Vista home premium and used it for a week to access the 'net and email. Yesterday, while deleting an email, the "d" key stuck down while I was issuing <CTRL>D and the cursor froze. I then rebooted by using the reset button and saw many lines of text including "kernel panic". so I reset and booted into 'repair boot'. Again, many lines of text which stop at the same place if I try this twice.
I assume I've fried my ubuntu install and would like to fix or re-install it. When I installed it, I let the [wubi?] installer make decisions except choice of drive because it picked the external, USB drive. It appears to've used about 80 G on internal drive D: I could boot from the distro CD and see if it will re-install but I'm concerned that I may not fix my problem or that it may mess up my windows installation.
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May 27, 2011
My old computer started randomly rebooting so I went out yesterday and bought a new one. It's a standard Intel 64 architecture with 2gb ram etc.The old computer was running Lenny however I'm happy to upgrade, so I just went to the main Debian download site and downloaded:debian-6.0.1a-ia64.netinst.iso (this didn't work, apparently ia64 is for itanium and my machine is definitely not that), so I downloaded: debian-6.0.1a-amd64-netinst.iso, burnt the CD and ran the install. First time through I had a power failure.
Second time through (a complete fresh start - new partition and everything) it went all the way through to completion and reboot.Clicked 'Continue' to reboot and the machine reset as it would normally and the Grub loader started okay, prompted for the "Debian amd64" standard boot image, selected that and the first 6 lines appeared normal, then the messages wizzed by so fast that only superman could read them. Then they stop - here is some of the content...
[3.816673] Kernel panic - not syncing: Attempted to killl init!
Call trace:
get_empty_filp
panic
[code].....
Running it again I get similar stack stuff but it's a different place: [3.541816], [3.427502] And sometimes if I wait for a minute or two it will continue on further but appear to crash again. Hardware details (everything is onboard - no added cards):
G41M-S3
Intel G41 + ICH7 chipsets
CPU: LGA 775 for Intel Core 2 Extreme
[code]......
Is the amd64 the wrong image? Should I try i386? Is it a blip and I should just rerun the entire install again?
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Oct 12, 2010
I recently created a bootable pen drive using unetbootin of Ubuntu 10-10 release. It was failing with error message similar to 'specify the init' then formatted the pendrive/usb and now it was giving, SYSLINUX 3.63 Debian 2008-07-15 EBIOS CopyRight ..... Could not find kernal image. boot: when you press enter it again goes to Could not find kernal image. boot: linux
I believe this is due to USB creator. Let me try with creating bootable USB from some windows machine.
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Mar 14, 2010
i am very frustrated with my ubuntu system which is meant as a workstation-server. It seems to loose track of its drives every time I add diskspace.Now every other boot (it seems) it says (among other things: VFS: can't find ext3 filesystem on dev sdd5) drops me to a maintenance-shell and asks for the root password (whats that in ubuntu, the user password does not word) - so I can't log in. Ctrl-D sometimes works and it boots through or boots after warmstart by Ctrl-Alt-Del.
[edit: found out that with alt-f3 i can access a normal shell - good - but how do I start up the GUI in ubuntu? - startx does not work] I have manually fsck'd all ext2/3 partitions form a ubuntu booted from CD - still it says something about not being able to mount /dev/sdd5.Since every now and then I have so much trouble bringing up the machine I am quite unhappy. I suspect the constant updates are prone to break things - is that so?And how do I resolve this issue. Unfortunately there is nothing about the errors in /var/log/messages or dmesg so it is no use posting it here. Where are such errors recorded? [edit: I changed the mappings in fstab to resolve the issue - still it is awkward that drives get messed up so easily. Are UUIDs in fstab less error prone when moving drives around, or do they have other issues?]
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Jun 5, 2010
after someone accidentally kicked the power cord for a server out of the wall,the server fails to boot. upon reconnecting.this is the output i get:
Code:
fsck from util-linux-ng 2.6
/dev/sda5 was not cleanly unmounted, check forced.
filesystem checks are in progress (ESC to cancel)[code].....
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Jul 28, 2010
I have a laptop with Windows 7 and Ubuntu installed in seperate partitions. When I boot up the computer I get options to boot either in windows 7 or Ubuntu. Yesterday I updated Ubuntu to 10.4 version. I have been having issues with grub rescue, which was rectified an hour ago. Now I can boot up into windows 7, but when I try to boot into Ubuntu, I get a GRUB screen as below code...
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Aug 30, 2010
I installed Ubuntu netbook version on my HP netbook Mini 110 with Windows 7. After installing Ubuntu the first boot up failed. It hangs with a black screen with a flashing text-mode cursor. After several attempts (just rebooting) it worked. However, about 95% of the time the machine fails to boot - after 3-4 seconds, and without showing anything on the screen (text or graphical), it hangs with a black screen with a flashing text-mode cursor. Pressing Ctrl-Alt-F7 (or any other keys) has no effect.
I also tried booting in recovery mode from the Grub menu I get at start-up. It failed too. The last few lines I get in recovery mode looks like : ata1: SATA max UDMA/133 abar m1024@0xfe(some numbers)
ata2: DUMMY
ata3: SATA max UDMA/133 abar m1024@0xfe(some numbers)
ata4: DUMMY
After this it get stuck there forever. Can someone help me out on this ? I'm a novice in this area.
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Nov 5, 2010
I've installed burg with no major hassle. Started up the computer to see a pretty new boot menu, but Ubuntu fails to boot. The screen immediately turns black and the computer reboots. Fortunately, I have grub backed up on a usb flash drive so I can boot.
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Mar 14, 2011
This morning my system has a problem which is beyond my ability to understand: Firstly, the system does not boot automatically, after a fixed delay, from the grub menu. I have to press 'enter' against a chosen boot option. Secondly boot then fails. A lot of messages flash past the screen (which appear to be a trace) and end showing the following (partial example):
Code:
Killed
mount: mounting /dev on /root/dev failed: No such file or directory
mount: mounting /sys on /root/sys failed: No such file or directory
mount: mounting /proc on /root/proc failed: No such file or directory
Target filesystem doesn't have requested /sbin/init.
No init found. Try passing init= bootarg.
at this stage I can move around the directory structure using 'cd', but no other commands seem to work.I tried the recovery boot option - same result. Is this a symptom that my boot drive has failed? No, that can't be true, or I would not be able to see the grub menu, would I? I can't find a similar situation after a Google search; what recovery procedure I should use? Correction: I must have had brain fade: I see there is quite a long thread on this very topic on the forum. I'm going to examine that first before I ask for more help.
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Aug 11, 2011
I have a embedded computer running 10.3 (stuck with that version) that has USB device issues. In reality, it has two USB devices attached, both FTDI FT232 USB to Serial Uart driven hardware. Both usually are at /dev/ttyUSB0 and 1 when everything goes right. The latest FTDI driver is already in the kernel. Randomly however, when it boots one or both will be missing in dev. If we only leave one physically attached before booting, sometimes it comes up ok, the other times there's no listing in /dev/ or lsusb. But when we do run lsusb once and watch the system log, suddenly the device is found and 'attached'. Then it works fine.
I've repeated this with another test USB device (and old cell phone that gets installed as a ceullar modem) and the same thing can happen. It will randomlyy be missing from lsusb listing till lsusb is run once. IE, run it once, no listing, run it again, then it shows up and the system log saya it was just attached. If we leave both, sometimes one device (Call this one A) is ready to go, but device B is missing. If we unplug B, A dissapears from /dev/ and the system log says A was unpluged. The when we reattach B, both show up in /dev/ and the system log reports two USB devices were attached. running lsusb doesn't fix one or both missing when they are both physically attached.
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Mar 4, 2010
New kernel Fails to boot. video driver is current and I tried reinstall . The .19 Kernel works fine
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May 1, 2010
Installed v9 a couple of weeks back and have been causally mucking about with it since. I managed to get XP and ubuntu running as a dual boot system (which was an achievement ).
Anyway, i've upgraded to 10.04 - and already loving it. However... my XP o/s no longer boots. It use to prior to the upgrade. Now, when the XP o/s is selected from GRUB2, I just get a series of bleeps and a flashing _.
Now, I am a complete novice. I actually have no idea where to even begin trouble shooting GRUB2 (and i'm assuming its a problem with GRUB).
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May 5, 2010
I created a Ubuntu live usb，it works fine on my notebook, but boots fail on my desktop pc. I found that /dev/sdb1 is always mounted to /cdrom when booting, but usb key is /dev/sdc on my desktop pc, it causes sequence booting process which depend upon files under /cdrom fails.
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May 20, 2010
I have Vista on my Samsung R60 + and have installed Ubuntu. On start up I get the dual boot option, select Ubuntu which then goes to completeing install etc, get some HD activity then nothing.
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May 26, 2010
I was able to successfully create a small, fixed-size "ram disk" just for kicks, via:
Code:
sudo mkfs -t ext3 -q /dev/ram1 65536
sudo mkdir -p /media/ramdisk
sudo mount /dev/ram1 /media/ramdisk -o defaults,rw
However, I wanted it to auto-boot, so I added the line to fstab:
Code:
/dev/ram1 /media/ramdisk ext3 defaults 0 0
This, however, rendered Ubuntu unbootable and I had to repair the fstab by removing the line via a Live CD. I had enough patience to boot through the CD an extra time to see if just deleting "ext3" would work, but it did not. What would cause this to make the system unbootable and how I could make it work?
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Jun 10, 2010
Dual boot Windows XP SP3 & Ubuntu 9.10 on a single hdd, w/2 partitions. Booted to Ubuntu and upgraded online. XP boots fine, but Ubuntu, not so much; a msg about /dev not found, followed by a shell login prompt. I suspect a grub problem, but haven't been able to find a definitive answer. Since I can at least boot XP, I do not want to do anything that would screw that up and leave me with no bootable OS. I did the "upgrade" shortly after 10.04 was released. Is there a way to reliably fix this w/o possibly screwing up my ability to boot XP, the only OS I can boot? I have no Ubuntu 10.04 disk, as I used their upgrade online option.
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Jul 8, 2010
I'm having a lot of trouble with a PC that has been running Ubuntu for ages, since about 8.04 I think. I've run the distro upgrade a few times and it was running 10.04, but for some reason won't boot anymore. So I'm trying to do a fresh reinstall but I can't get the LiveCD to boot. I'm trying to install 10.04 AMD64 desktop.If I leave the CD to boot, I get to a Busybox screen showing the error "No init found. Try passing init= bootarg." and an (initramfs) prompt. This is all displayed at 1280x1024 res - the native image of the screen I'm using.It's an NVidia chipset - an older one. So I tried hitting a key during boot and putting the nomodeset option on. I get the same error, but at a lower resolution
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Jul 30, 2010
It used to be, that with grub (not grub2?), I could restore the boot partition by the following:
# grub
grub> find /grub/grub.cfg
hd0,10
grub> root (hd0,10)
grub> setup (hd0,10)
Now this no longer works with whatever grub 10.04 uses, I suspect it is grub2? How do I restore grub to the specific partition I need and NOT to MBR? I have a different boot loader and this boot loader is directed to Ubuntu's boot partition.... Since I cannot boot directly to Ubuntu's boot partition I am perhaps left with only LiveCD to do the recovery, right?
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Oct 26, 2010
So I just finished doing a Hardy based LiveCD. I made an installation in VirtualBox, installed some packages, and then compiled a totally new kernel, 2.6.35, actually this one: [URL] I compiled squashfs support in the kernel naturally Everything seems to be fine, the system boots up normally etc. But here comes the trouble: I make the iso file with remasterys (2.0.12-latest for Hardy) but this iso isn't able to boot.
It drops to busybox shell, casper.log says: /init: 1 /dev/sr0: no such file or directory Unable to find medium with the livesystem. My /dev folder is totally empty, it contains only the shells (8 pieces of tty). I don't know what's wrong...my rootfs is surely mounted, mount shows rootfs rw /
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