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  • yum security update - message indicating kernel version not up to date

    - by JMC
    Running yum --security check-update returns this message: Security: kernel-3.x.x-x.63 is an installed security update Security: kernel-3.x.x-x.29 is the currently running version I already ran the yum security update on the kernel, but it looks like it didn't change the version running on the system. What needs to be done to make it run the new kernel? Are there any concerns about why it didn't change during the installation process? The yum log just shows installed for the new kernel no error messages.

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  • How can I see logs in a server after a kernel panic hang ?

    - by Low Kian Seong
    I am running a production gentoo Linux machine, and recently there was a situation where the server hung in my co-located premises and when I got there I noticed that the server was hung on what appeared to be a kernel panic hang. I rebooted the machine with a hard reboot and was disappointed to find out that I could not find a shred of evidence anywhere on why the machine hung. Is it true that when I do a hard reboot the messages itself will get lost or is there a setting I can do somewhere say in syslog-ng or maybe in sysctl to at least preserve the error log so that I can prevent such mishaps from happening in the future ? I am running a 2.6.x kernel by the way. Thanks in advance.

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  • How can I see logs in a server after a kernel panic hang?

    - by Low Kian Seong
    I am running a production gentoo Linux machine, and recently there was a situation where the server hung in my co-located premises and when I got there I noticed that the server was hung on what appeared to be a kernel panic hang. I rebooted the machine with a hard reboot and was disappointed to find out that I could not find a shred of evidence anywhere on why the machine hung. Is it true that when I do a hard reboot the messages itself will get lost or is there a setting I can do somewhere say in syslog-ng or maybe in sysctl to at least preserve the error log so that I can prevent such mishaps from happening in the future ? I am running a 2.6.x kernel by the way. Thanks in advance.

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  • Where and How should a Kernel Panic be reported?

    - by KangCoding
    I've Archlinux installed on my laptop Fujitsu Amilo Pi 2*** and I cannot find any log at /var/log that has the StackTrace. The Kernel panics ALWAYS when I try to modify screen brightness. Where are those Logs or StackTraces? Do I have to install any package to catch that StackTrace? Where should I send that Log/StackTrace? Thanks for reading. -- UPDATE 1 I cannot change brightness trough console: xbacklight -get and any other parameter as -dec or -inc always returns: [kangcoding@Pi2530Arch ~]$ xbacklight -set 100 No outputs have backlight property I still cannot find log files or stacktraces of this Kernel Panic. Here is a Photo:

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  • `power/persist` file not found in USB device sysfs directory

    - by intuited
    The file /usr/share/doc/linux-doc/usb/persist.txt.gz mentions that the USB-persist capability can be enabled for a given USB device by writing 1 to the file persist in that device's directory in /sys/bus/usb/devices/$device/power. This is said — if I understood correctly — to allow mountings of volumes on the drive to persist across power loss during suspend. However, I've discovered that the device I'd like to enable this facility for — a USB hard drive — does not have such a file in its corresponding directory, and that attempts to create it are rebuffed. Is there perhaps a kernel module that needs to be loaded for this to work? Do I need to build a custom kernel? I'm running ubuntu 10.10.

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  • when /etc/modules is used?

    - by Dyno Fu
    "# /etc/modules: kernel modules to load at boot time." my question is when and where the module loading job done? my first guess is some init scripts in /etc/init.d/ but grep got none. then i think it might be the init ramdisk, but after decompress it, i found conf/modules which is different with /etc/modules. any idea? thanx.

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  • Error encountered compiling kernel 2.6.35-25.44

    - by Matt
    I downloaded the linux-source-2.6.35 package and tried to compile it using the command "fakeroot make-kpkg --append-to-version=.dbg kernel_image kernel_source kernel_headers --initrd" after "make menuconfig". The image .deb file is produced and installs fine, but an error stops the build process while trying to make the source package: scripts/Makefile.clean:17: /home/ade/linux-source-2.6.35/debian/linux-source-2.6.35.10.dbg/usr/src/linux-source-2.6.35.10.dbg/crypto/Makefile: No such file or directory make[1]: *** No rule to make target `/home/ade/linux-source-2.6.35/debian/linux-source-2.6.35.10.dbg/usr/src/linux-source-2.6.35.10.dbg/crypto/Makefile'. Stop. make: *** [_clean_crypto] Error 2 Sure enough, the folder linux-source-2.6.35/debian/linux-source-2.6.35.10.dbg/usr/src/linux-source-2.6.35.10.dbg/crypto does not exist (although all of the other kernel source folders appear to be there). I haven't even been able to determine where the folder is supposed to be copied over, or what's supposed to invoke clean. Am I doing something wrong here? It should be noted that I am running 10.04.

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  • Can I delete Generic kernel if I use Generic

    - by user206049
    I currently can't update my release as there is not enough space on boot. I just have the one kernel version there, but seem to have both the Generic and Low Latency versions. uname -r just shows 3.8.0-32-lowlatency ls -lah /boot shows -rw-r--r-- 1 root root 899K Oct 2 00:00 abi-3.8.0-32-generic -rw-r--r-- 1 root root 899K Oct 7 09:27 abi-3.8.0-32-lowlatency -rw-r--r-- 1 root root 152K Oct 2 00:00 config-3.8.0-32-generic -rw-r--r-- 1 root root 152K Oct 7 09:27 config-3.8.0-32-lowlatency drwxr-xr-x 3 root root 2.0K Jan 1 1970 efi drwxr-xr-x 5 root root 1.0K Oct 22 10:05 grub -rw-r--r-- 1 root root 32M Oct 22 09:51 initrd.img-3.8.0-32-generic -rw-r--r-- 1 root root 32M Oct 22 10:05 initrd.img-3.8.0-32-lowlatency drwxr-xr-x 2 root root 12K Feb 25 2013 lost+found -rw-r--r-- 1 root root 173K Dec 5 2012 memtest86+.bin -rw-r--r-- 1 root root 175K Dec 5 2012 memtest86+_multiboot.bin -rw------- 1 root root 3.0M Oct 2 00:00 System.map-3.8.0-32-generic -rw------- 1 root root 3.0M Oct 7 09:27 System.map-3.8.0-32-lowlatency -rw------- 1 root root 5.2M Oct 2 00:00 vmlinuz-3.8.0-32-generic -rw------- 1 root root 5.2M Oct 7 09:27 vmlinuz-3.8.0-32-lowlatency So what can I do to allow me to update? Apparently I need 174m on boot and am 40m short.

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  • Ubuntu 12.10 won't display properly after kernel upgrade

    - by Daniel
    After updating a system today, Ubuntu's doesn't display correctly. The desktop now looks like this. It was working properly before. I had to use the terminal to run synaptic package manager, so I could view the update history; which is as follows: Commit Log for Wed Nov 7 11:50:36 2012 Upgraded the following packages: linux-image-generic (3.5.0.17.19) to 3.5.0.18.21 Installed the following packages: linux-image-3.5.0-18-generic (3.5.0-18.29) linux-image-extra-3.5.0-18-generic (3.5.0-18.29) Prior to this issue, the last active driver was nvidia-current-updates, version 304.51. I tried using the nvidia-current driver, version 304.51.really.304.43 instead, but the problem persists. I tried running nvidia-settings from terminal, so I could try configuring something, but the application informs that the Nvidia driver is not being used. As the x-swat repository has nothing for Quantal, I desperately used the unstable x-edgers repository & upgraded, but to no avail; so I purged it. The display should normally be full HD, but the only available resolutions now are 1024x768(4:3) and 800x600(4:3). The system is Dell XPS-L702X, with NVIDIA GeForce GT 555M, and 17" screen. How can I fix this problem? Update: I tried using the Nouveau third-party driver & this fixes the issue. However, if you have any idea how to get the Nvidia drivers working properly with the latest kernel, please share; as I've noticed some videos playing very slowly on the system, though I'm not sure exactly why.

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  • Bug: unable to handle kernel NULL pointer dereference at

    - by maria
    I have recently installed new system on my disc, Ubuntu 12.04. Installation proceeded without problems, I started installing additional software and put data from other discs. I had already two times bug report, it was quite long, and I have no idea how to acces to log file (which probably is somewhere saved) and since I had to switch off the computer using the button, anything else was possible, here is just a small part of it (what I've noted on paper) could not write bytes: Broken pipe speach dicpatcher disabled: edit etc/default/speach-dispatcher saned disabled: edit .... and than: BUG: unable to handle kernel NULL pointer dereference at 0000009c I've run Memory test in GRUB, everything is fine. First time it occured when I was using rsync, second time when I was trying to install texlive. Should I install whole system once again? Or can it be hardware problem? Or something else? If there is any hardware details which may be relevant, please ask, since I have no idea what is happening, I don't know what kind of information could be useful. Thanks P.S. dmesg output:

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  • Karmic iptables missing kernel moduyles on OpenVZ container

    - by luison
    After an unsuccessful p2v migration of my Ubuntu server to an OpenVZ container which I am stack with I thought I would give a try to a reinstall based on a clean OpenVZ template for Ubuntu 9.10 (from the OpenVZ wiki) When I try to load my iptables rules on the VM machine I've been getting errors which I believe are related to kernel modules not being loaded on the VM from the /vz/XXX.conf template model. I've been testing with a few post I've found but I was stack with the error: WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/. FATAL: Could not load /lib/modules/2.6.24-10-pve/modules.dep: No such file or directory iptables-restore v1.4.4: iptables-restore: unable to initialize table 'raw' Error occurred at line: 2 Try `iptables-restore -h' or 'iptables-restore --help' for more information. I read about the template not loading all iptables modules so I added modules to the XXX.conf of the VZ virtual machine like this: IPTABLES="ip_tables iptable_filter iptable_mangle ipt_limit ipt_multiport ipt_tos ipt_TOS ipt_REJECT ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_LOG ipt_length ip_conntrack ip_conntrack_ftp ip_conntrack_irc ipt_conntrack ipt_state ipt_helper iptable_nat ip_nat_ftp ip_nat_irc" As the error remained I read that I should build dependencies again on the virtual machine: depmod -a but this returned an error: WARNING: Couldn't open directory /lib/modules/2.6.24-10-pve: No such file or directory FATAL: Could not open /lib/modules/2.6.24-10-pve/modules.dep.temp for writing: No such file or directory So I read again about creating the directory empty and redoing "depmod -a" it. I now don't get the dependancies error but get this and I don't have a clue how to proceed: WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/. FATAL: Module ip_tables not found. iptables-restore v1.4.4: iptables-restore: unable to initialize table 'raw' Error occurred at line: 2 Try `iptables-restore -h' or 'iptables-restore --help' for more information. I understand that iptables rules have to be different on the VM machine and perhaps some of the rules we are trying to apply (from our physical server) are not compatible but these are just source IP and destination port checks that I would like to be able to have available . I've heard that on the CentOS template there are no issues with this, so I understand is to do with VM config. Any help would be greatly appreciated.

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  • Booting Debian5 (Lenny) on 2.6.16 Kernel

    - by bk
    Due to a proprietary kernel module that I don't have the source to and is very picky about what kernel versions it will load into (even with modprobe --f), I find myself in need of running a 2.6.16.XX kernel on my Debian5 machine. The machine boots fine with the 2.6.26-2 stock kernel, and I have successfully build and booted 2.6.26 and 2.6.31 based kernels by making a .deb and the ndoing dpkg -i. However, when I do the same approach for 2.6.16, the kernel hangs at boot. I'm testing this in a VMWare image, so I don't think its an issue of newer hardware not supported by the older kernel. For a working kernel, at boot I get: Uncompressing Linux.. OK booting the kernel Loading, please wait... mdadm: No devices listed in the conf file were found kinit name_to_dev_t /dev/hda5 (dev5,3) ... With 2.6.16.60, I never get the kinit message. It hangs after the mdadm line. There are no mdadm arrays on this machine, so I doubt its an issue inside the mdadm stuff, which is supposed to just error out as it does in the 2.6.26 case above, but for some reason I'm getting stuck getting into kinit. I've been banging my head against this wall so I'm very open to suggestions on how to go about troubleshooting this.

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  • Karmic iptables missing kernel moduyles on OpenVZ container

    - by luison
    After an unsuccessful p2v migration of my Ubuntu server to an OpenVZ container which I am stack with I thought I would give a try to a reinstall based on a clean OpenVZ template for Ubuntu 9.10 (from the OpenVZ wiki) When I try to load my iptables rules on the VM machine I've been getting errors which I believe are related to kernel modules not being loaded on the VM from the /vz/XXX.conf template model. I've been testing with a few post I've found but I was stack with the error: WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/. FATAL: Could not load /lib/modules/2.6.24-10-pve/modules.dep: No such file or directory iptables-restore v1.4.4: iptables-restore: unable to initialize table 'raw' Error occurred at line: 2 Try `iptables-restore -h' or 'iptables-restore --help' for more information. I read about the template not loading all iptables modules so I added modules to the XXX.conf of the VZ virtual machine like this: IPTABLES="ip_tables iptable_filter iptable_mangle ipt_limit ipt_multiport ipt_tos ipt_TOS ipt_REJECT ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_LOG ipt_length ip_conntrack ip_conntrack_ftp ip_conntrack_irc ipt_conntrack ipt_state ipt_helper iptable_nat ip_nat_ftp ip_nat_irc" As the error remained I read that I should build dependencies again on the virtual machine: depmod -a but this returned an error: WARNING: Couldn't open directory /lib/modules/2.6.24-10-pve: No such file or directory FATAL: Could not open /lib/modules/2.6.24-10-pve/modules.dep.temp for writing: No such file or directory So I read again about creating the directory empty and redoing "depmod -a" it. I now don't get the dependancies error but get this and I don't have a clue how to proceed: WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/. FATAL: Module ip_tables not found. iptables-restore v1.4.4: iptables-restore: unable to initialize table 'raw' Error occurred at line: 2 Try `iptables-restore -h' or 'iptables-restore --help' for more information. I understand that iptables rules have to be different on the VM machine and perhaps some of the rules we are trying to apply (from our physical server) are not compatible but these are just source IP and destination port checks that I would like to be able to have available . I've heard that on the CentOS template there are no issues with this, so I understand is to do with VM config. Any help would be greatly appreciated.

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  • CentOS 6.5 new Kernel not active after reboot

    - by Kristofer
    Today I was running some yum updates and wanted to verify that everything went through fine by making sure I had a new kernel. To my surprise I noticed that CentOS was still running 2.6.32-431.5.1.el6.x86_64 even though it looked as though 2.6.32-431.23.3.el6 was installed. Indeed 2.6.32-431.23.3.el6 shows up in /etc/grub.conf but not in the upstart boot options. Any ideas why? In the update log it says: ---> Package kernel-firmware.noarch 0:2.6.32-431.5.1.el6 will be updated ---> Package kernel-firmware.noarch 0:2.6.32-431.23.3.el6 will be an update Could this be the reason? What does "will be an update" mean? My /etc/grub.conf: # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/mapper/VolGroup00-root # initrd /initrd-[generic-]version.img #boot=/dev/vda default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu password --encrypted $1$auui(i$sODM4ni/Zts9IlMWu.wWF/ title CentOS (2.6.32-431.23.3.el6.x86_64) root (hd0,0) kernel /vmlinuz-2.6.32-431.23.3.el6.x86_64 ro root=/dev/mapper/VolGroup00-root rd_NO_LUKS LANG=en_US.UTF-8 KEYBOARDTYPE=pc KEYTABLE=sv-latin1 rd_NO_MD rd_LVM_LV=VolGroup00/swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup00/root rd_NO_DM rhgb quiet rhgb quiet audit=1 initrd /initramfs-2.6.32-431.23.3.el6.x86_64.img title CentOS (2.6.32-431.5.1.el6.x86_64) root (hd0,0) kernel /vmlinuz-2.6.32-431.5.1.el6.x86_64 ro root=/dev/mapper/VolGroup00-root rd_NO_LUKS LANG=en_US.UTF-8 KEYBOARDTYPE=pc KEYTABLE=sv-latin1 rd_NO_MD rd_LVM_LV=VolGroup00/swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup00/root rd_NO_DM rhgb quiet rhgb quiet audit=1 initrd /initramfs-2.6.32-431.5.1.el6.x86_64.img title CentOS (2.6.32-431.el6.x86_64) root (hd0,0) kernel /vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/VolGroup00-root rd_NO_LUKS LANG=en_US.UTF-8 KEYBOARDTYPE=pc KEYTABLE=sv-latin1 rd_NO_MD rd_LVM_LV=VolGroup00/swap SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=VolGroup00/root rd_NO_DM rhgb quiet rhgb quiet audit=1 initrd /initramfs-2.6.32-431.el6.x86_64.img

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  • Timing the Linux Kernel boot-time optimisation

    - by CVS-2600Hertz-wordpress-com
    I am trying to optimise the boot-up time of linux on an embedded device (not PC) Currently to profile the boot-up sequence, I have enabled the timing info on printk logs. Is this the most optimum way? If not, how do i profile the boot-up sequence (with timing) with minimum overhead? PS: I have a terminal (of the device) over a serial-connection & I use TeraTerm over windows-XP to access it.

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  • how to identify process in kernel read func without using current->pid

    - by yoavstr
    my lecture wants us to build module where we need to identify each read process and where the same read process called twice on the same writer massage we should insert him to an queue who's we wake up when all readers have read I achieved this goal by by using list of pid's and boolean read/not_read inside each node but he decided to be nasty and require us to it with some argument from FILE struct can you please help me ?....

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  • file_operations Question, how do i know if a process that opened a file for writing has decided to c

    - by djTeller
    Hi Kernel Gurus, I'm currently writing a simple "multicaster" module. Only one process can open a proc filesystem file for writing, and the rest can open it for reading. To do so i use the inode_operation .permission callback, I check the operation and when i detect someone open a file for writing I set a flag ON. i need a way to detect if a process that opened a file for writing has decided to close the file so i can set the flag OFF, so someone else can open for writing. Currently in case someone is open for writing i save the current-pid of that process and when the .close callback is called I check if that process is the one I saved earlier. Is there a better way to do that? Without saving the pid, perhaps checking the files that the current process has opened and it's permission... Thanks!

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  • inode_operations , warning: initialization from incompatible pointer type

    - by djTeller
    Hi everyone, I'm trying to compile a simple Kernel program that read and write from a proc file. I'm trying to set permission to that file by overriding the permission fp in inode_operations struct (.permission) static int module_permission(struct inode *inode, int op, struct nameidata *foo) { . . . } static struct inode_operations Inode_Ops_4_Our_Proc_File = { .permission = module_permission, /* check for permissions */ }; Our_Proc_File->proc_iops = &Inode_Ops_4_Our_Proc_File; For some reason, when I compile this i get - warning: initialization from incompatible pointer type on the following line: .permission = module_permission, /* check for permissions */ Any idea how to solve this? Thanks!

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  • Ubuntu 13.04 installation issues: unable to handle kernel paging request error

    - by user173944
    I wish I could say that I’ve done more for the Linux community as of recent but I am very VERY new to all of this and I feel very much in over my head. I figured I would install Ubuntu. on my computer and then I would learn and contribute to the community simultaneously. I will try to be as detailed as I can, please ask questions if you need clarification. I installed Ubuntu. 13.04 (64-bit) on my dell Inspiron 1501. This has an AMD Turion 64-bit TL-56 1.8 Ghz mobile processor. It is a dual core. It has an ATI Radeon Xpress 1150 chipset in it as well. As of right now I only have a total of 2Ghz ram, however I was planning on upgrading that in the near future so I opted for the 64-bit Ubuntu. 13.04. I first tried the live CD and everything seemed to be functioning correctly other than the wireless (but that's not the issue at hand, there are plenty of guides on the internet on how to get that functioning). The internet worked just fine when it was plugged in so no issues there. However, once I went from that to installing 13.04 (just 13.04, no dual partitioning... I want this computer to run strictly Ubuntu.) it did not work. It took me into a shell that I could not type anything into. In this shell it said Bug: unable to handle kernel paging and then it called a bunch of traces and froze up. I had to hard reset the laptop. I tried the boot-repair program multiple times with many different settings and typically after starting up the laptop would say something along the lines of recursive errors. will attempt to fix and then it would attempt to fix a couple of things, and then the computer would freeze up after the text said end trace... so I had to hard reset it again. I'm not an impatient person either, when I say it would freeze up it would be for a period of at least 15 minutes each time before I decided to hard reset. I attempted to install 12.10 on it instead and I got the same exact message, and when I ran boot-repair it did the same exact thing as before. I am currently in the process of running memtest64+ on the computer's memory, though I really don't believe that, nor any of the hardware is at fault due to the fact that it was still running windows vista perfectly when I had decided to switch over to Ubuntu. so far the memtest has came back just fine without any errors, but I’ve only been running it for approximately an hour. So this is the situation I’m in. I did notice when I was using the live disk that the video driver needed updated so I performed that, though I’m fairly certain that has nothing to do with this. I have also attempted (though I’m not certain that my attempt was successful in accomplishing what I had planned) to manually edit the grub settings by making acpi=0 along top of adding nomodeset to the boot commands. Like I said, I’m not sure I did that correctly though, but I’m fairly certain I did. If anyone needs any more information I will be more than happy to provide it, I will post back once I get the full results of the memtest. I very much appreciate any ideas anyone else has, I’ve been at this for a few days to no avail... thank you

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  • Custom kernel with NFS client support

    - by Vaibhav
    I'm trying to build a custom Linux kernel using this link I have successfully built the kernel and booted into it. Now I want to mount NFS share on it. I have enabled NFS client support from menuconfig . Update : I'm trying to mount a NFS share from newly built kernel. I have tried adding a NFS client support to the kernel. Following command shows (From newly built kernel) #cat /proc/filesystems nodev nfs nodev usbfs ext3 vfat .... Which shows that kernel support NFS filesystem but, mount command fails to mount NFS share, which is working fine on other machines. Help will be appreciated.

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  • kernel 2.6.36 not booting

    - by Saumitra
    Hi, I m a newbie to kernel programming. I am trying to boot the kernel 2.6.36 on my ECG machine.It was working perfectly on 2.6.33.2. It is getting stuck on this step: ## Booting kernel from Legacy Image at 81000000 ... Image Name: Created: 2010-12-27 5:55:56 UTC Image Type: MIPS Linux Kernel Image (gzip compressed) Data Size: 1974278 Bytes = 1.9 MB Load Address: 80100000 Entry Point: 80104730 Verifying Checksum ... OK Uncompressing Kernel Image ... OK Starting kernel ... After this the system either resets or it hangs. I have also checked the configuration & set it properly.Please let me know.

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  • task_current redundant field

    - by user341940
    Hi, I'm writing a kernel module that reads from a /proc file. When someone writes into the /proc file the reader will read it, but if it reads again while there is no "new" write, it should be blocked. In order to remember if we already read, i need to keep a map of the latest buffer that process read. To avoid that, I was told that there might be some redundant field inside the current- (task_struct struct) that i can use to my benefits in order to save some states on the current process. How can I find such fields ? and how can i avoid them being overwritten ? I read somewhere that i can use the offset field inside the struct in order to save my information there and i need to block lseek operations so that field will stay untouched. How can I do so ? and where is that offset field, i can't find it inside the task_Struct. Thanks and I need to save for each process some information in order to map it against other information. I can write a ma

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  • How to understand Linux kernel source code for a beginner?

    - by Amit Chavan
    Hi, I am a student interested in working on Memory Management, particularly the page replacement component of the linux kernel. What are the different guides that can help me to begin understanding the kernel source? I have tried to read the book Understanding the Linux Virutal Memory Manager by Mel Gorman and Understanding the Linux Kernel by Cesati and Bovet, but they do not explain the flow of control through the code. They only end up explaining various data structures used and the work various functions perform. This makes the code more confusing. My project deals with tweaking the page replacement algorithm in a mainstream kernel and analyse its performance for a set of workloads. Is there a flavor of the linux kernel that would be easier to understand(if not the linux-2.6.xx kernel)?

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  • How do I use apt-get to update to the latest kernel?

    - by Bucic
    My current kernel is 3.2.0-26 (my main computer) while on another of my Ubuntu computers, with which I didn't fiddle with unofficial updates, it's 3.2.0-30. Yet the Update manager on my main computer doesn't show available kernel updates. It shows other updates though. I suspect is due to the fact that in the past I installed multiple mainline kernel versions (not recommended versions), up to 3.5* series. What I'm after: Either: Fix automatic kernel updates. Or: Learn about a way to check for the latest official ubuntu kernel version and get it manually (I know how to install kernels from debs) What I have already tried: Uninstalled unused kernels including "the generic one without a number" as per http://askubuntu.com/a/103875/29347 and then also https://ubuntugenius.wordpress.com/2011/01/08/ubuntu-cleanup-how-to-remove-all-unused-linux-kernel-headers-images-and-modules/

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