Boot Error Logs Ubuntu
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developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Does Ubuntu log events occurring during the boot? up vote 3 down vote favorite Is there anywhere in the ubuntu (or linux ubuntu log file in general) logs which can record a computer booting up and the OS failing to load, due to a problem encountered during the boot stage? installation boot log share|improve this question asked Jun 2 '12 at 15:46 David 76235 add a comment| 4 Answers 4 active oldest votes up vote 4 down vote you can check it into /var/log This directory has all types of logs /var/log/auth.log Record of all logins and logouts by normal users and system processes. /var/log/btmp Log of all attempted bad logins to the system. Accessed via the lastb command. /var/log/debug Debugging output from various packages. /var/log/dmesg Kernel ring buffer. The content of this file is referred to by the dmesg command. /var/log/gdm/ GDM log files. Normally a subset of the last X log file. See /var/log/xdm.log for mode details. /var/log/kdm.log KDM log file. Normally a subset of the last X log file. See /var/log/xdm.log for more details. /var/log/messages System logs. /var/log/pacct Process accounting is the bookkeeping of process
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Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it fedora boot log works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Where to find ubuntu boot logs? up vote 1 down vote favorite My Xubuntu 14.04 installation stopped booting all of a http://askubuntu.com/questions/145553/does-ubuntu-log-events-occurring-during-the-boot sudden: after rebooting I just see a flashing _ in the top left corner of the screen. Holding Left-Shift during boot won't open any menu, Ctrl+Alt+F* will not open a terminal I can type in. I've reset BIOS settings, which did not help, then made a bootable USB stick with Ubuntu. I can now boot and I see that the data on the disk with OS is intact, I've checked the disk with badblocks and it found no errors. Is there any http://askubuntu.com/questions/657969/where-to-find-ubuntu-boot-logs way I can locate any details as to why the system does not boot? 14.04 boot logs share|improve this question edited Aug 8 '15 at 8:29 Prashant Chikhalkar 1,1841920 asked Aug 8 '15 at 6:45 Fluffy 6171727 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted You can use two log files to view the boot problem. /var/log/boot.log --- System boot log /var/log/dmesg --- print or control the kernel ring buffer Just use dmesg in terminal to view event occurred since boot. share|improve this answer answered Aug 8 '15 at 6:55 Prashant Chikhalkar 1,1841920 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged 14.04 boot logs or ask your own question. asked 1 year ago viewed 1072 times active 1 year ago Blog International salaries at Stack Overflow Related 4Where to find log file for booting information4Where is the Xpad content stored on disk?1Where are all my computer actions logged on 14.04 LTS?0Export chrooted logs from a pbuilder-dist build0Ubuntu 14.04.3 has frozen. What logs to check after reboot?0nagios logs were not getting updated0Ubuntu 14.04 won't boot reverts to blinking cursor0How
boot log of my Ubuntu system? The dmesg command print or control the kernel ring buffer. You can also use files located in /var/log/ http://www.cyberciti.biz/faq/ubuntu-view-boot-log/ directory to see snapshot of boot messages. To see logs type the following command at shell prompt (open the terminal and type the commands): $ dmesg | less You http://unix.stackexchange.com/questions/21963/where-do-i-find-messages-regarding-last-failed-linux-boot can use the following two files as well:
/var/log/boot.log /var/log/dmesgTo see them type:less /var/log/boot.log less /var/log/dmesg grep error /var/log/dmesg grep something /var/log/boot.log Share this tutorial on:TwitterFacebookGoogle+Download PDF version error log Found an error/typo on this page?About the author: Vivek Gite is a seasoned sysadmin and a trainer for the Linux/Unix & shell scripting. Follow him on Twitter. OR read more like this:FreeBSD CPU Information CommandView log files in Ubuntu LinuxOpenBSD: Find Out Memory RAM Size InformationLinux Log Files Location And How Do I View Logs Files on Linux?OpenSuse Linux: error logs ubuntu How to Read Logs or Log FilesDebian / Ubuntu Record Boot MessagesFreeBSD Mount CDROM / DVD Drive From The Command PromptLinux / UNIX: Getting information about reboots and shutdownsOpenBSD set up default boot time by modifying boot.conf fileHow To Find Hard Disk SATA Link Speed On FreeBSD{ 2 comments… add one } Niklas May 16, 2012, 10:49 amOn a Ubuntu/Debian, Bootlog is turned of by default. Turn it on like this:vi /etc/default/bootlogd# Run bootlogd at startup ? BOOTLOGD_ENABLE=Yes Reply Link العاب March 25, 2015, 9:18 amhello, how to get boot log on boot remotly , i have a linux server in my office and i remote retart it but some times apache or mysql crach on boot time and i cant knew why i must go to my office and connect monitor to see the error, is there any way to see live boot message ? thank you Reply Link Security: Are you a robot or human?Please enable JavaScript to submit this form.Cancel replyLeave a Comment Name Email Comment You can use these HTMLhere for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Where do I find messages regarding last failed Linux boot? up vote 11 down vote favorite 3 My Linux boot fails often. I have removed quiet from my boot options so I can see what's going on. Basically after showing a bunch of [pass] messages, it hangs. It does not hang every time. Now I know dmesg is the way I can see boot messages. But I want to look at the boot messages of the previous boot and not the current boot (because this one booted normally, while last one hanged). Also are there any other logs I can look at to find the problem? I am using Ubuntu Natty 11.04. Should I recompile my kernel with debugging support? Is that the only way to debug this issue? Finally, is this what is called a kernel panic (soft / hard or something)? boot logs share|improve this question edited Sep 21 at 0:52 Jeff Schaller 10.5k51939 asked Oct 3 '11 at 15:11 AnkurVj 4231619 add a comment| 1 Answer 1 active oldest votes up vote 11 down vote accepted /var/log/messages (or /var/log/syslog on some systems) is the main system log file - look there. Depending on configuration options, it can contain same, more or less information than dmesg shows. Also, it is continuous by default (appended, not replaced at each boot). Whether or not you'll need to recompile your kernel to solve the problem depends on what you can already find there and in other app-specific logs. Kernel panic is a symptom of a serious system problem. So serious that the kernel is not equipped with means to go about it. This can be triggered by many various issues of various kinds: including driver bugs, severe hardware failures, bugs in base system programs, rarely userspace applications. share|improve this answer edited Oct 4 '11 at 13:39 answered Oct 3 '11 at 15:25 rozcietrzewiacz 22k15079 In my installation the file was called syslog and not messages in the folder /var/log. I have f