Ubuntu Servers :: Kernel And Core System Same As In Desktop 9.10?
Mar 18, 2010Is the kernel and core system same in server and desktop 9.10? How do I update/upgrade server similar to what update manager does in desktop?
View 9 Replies
ADVERTISEMENT
CentOS 5 Hardware :: Infiniband (mlx4) Works On 16-core System But (now) Fails On 32-core System
Jan 27, 2010We have a small cluster of 20 HP systems, all running CentOS 5.3 in an NFS-root environment. Half are quad-socket, quad-core Xeon E7340 @ 2.40GHz (total 16 cores), the other half are 8-socket, quad-core Opteron 8354 (total 32 cores). All systems have a Mellanox Infiniband adapter ("Mellanox Technologies MT25418 [ConnectX VPI PCIe 2.0 2.5GT/s - IB DDR / 10GigE] (rev a0)")
With kernel 2.6.18-128.1.6.el5, infiniband works fine on all systems.
With the update to kernel 2.6.18-164.11.1.el5 (and both types of node running the same NFS-root image), the 16-core Xeons still work fine. Infiniband no longer works on the 32-core Opterons. Specifically, either the ib0 interface fails to appear, or it does appear but when configured with an IP address, doesn't actually work. In either case, loading the IB kernel modules takes a long time, but I haven't instrumented the load script yet to see which module, if any, is at fault. More errors listed below.
However, if I tweak the BIOS of the 32-core systems to reduce the per-socket core count to 2 (so effectively 8-socket, dual-core, down to a total of 16 available cores), Infiniband starts working again. Putting it back to 32-cores makes it fail. Booting the older kernel makes it work again. In summary: old kernel, IB works on all systems. Newer kernel, IB only works on 16-core systems.
Updating the IB firmware from 2.5.0 to 2.7.0 (latest available) doesn't help. I also did a full 'yum update' to make sure that libmlx4, openibd all other associated packages were up-to-date. Doesn't help either.
Some errors that appear on 32-core nodes:
ib_query_port failed (-16) for mlx4_0
ib_query_port failed (-16) for mlx4_0
mlx4_core 0000:04:00.0: SW2HW_MPT failed (-16)
mlx4_core 0000:04:00.0: SW2HW_MPT failed (-16)
[Code]....
Ubuntu :: Desktop System (P55-USB3 + Core I7 + 10.10) Fails To Suspend / Resume From Memory
Nov 27, 2010I have a desktop system (P55-USB3 + Core i7 + Ubuntu 10.10) that fails to suspend/resume from memory. So I'm trying to diagnose the problem. The first obstacle was easy enough --- when I put the system to sleep to memory, the computer comes back alive right away. A look at /var/log/kern.log revealed that one USB device (usb10) failed to suspend, and from there I was able to pin it down to the USB3 controller in the BIOS. Disabled that and this problem disappeared.
Now, I'm stuck with the second obstacle. The computer successfully goes into the suspend mode, but it hangs during resume. The monitor doesn't get any video signal, and it fails to respond to ping (netconsole doesn't work either.) After a forced reboot (that involves unplugging the power cable), /var/log/kern.log doesn't contain any interesting entries. All the pm_test modes from freezer to core succeed (I followed [URL] I've also tried pm_trace (https://wiki.ubuntu.com/DebuggingKernelSuspend) but again kern.log nor dmesg contains anything after the suspend. Either the write didn't survive the forced power off, or the resume is failing even before that. The motherboard doesn't have a serial port nor firewire, so getting kernel logs through them is not a possibility, either.
Ubuntu Servers :: Installs Of The GUI's Somehow Change To The Desktop Kernel?
Apr 4, 2011In Ubuntu Server 10.04, the kernel naming convention went sort of like "vmlinuz-2.6.32.21-server" for servers and "vmlinuz-2.6.32.21-generic" for desktops... Kernel numbers changing for the kernel version, but last signifying whether it was a desktop or a server version of the kernel... Right? At least as much as I've noticed with my 64bit installs.
I recently got a 32bit test server up on Ubuntu 10.10 and I think I'm either confused, maybe things might be different in 10.10 versions or my prior assumptions were wrong? On this test machine, I installed Ubuntu Server 10.10 32bit. After the install, I upgraded packages, then I installed kubuntu-desktop, xubuntu-desktop and ubuntu-desktop (in that order). I know the implied resource and security issues-- but this was a test machine to work something out. My observation on this machine is that I cannot find a kernel image on it with "...-server". All the versions of kernel images are "...-generic" All my previous installs of Ubuntu Server have been 64bit installs... and I just assumed all server kernels had "...-server" as the naming convention.
- Is this different for 10.10?
- Is this a difference in the 32bit server/64bit server kernel?
- Did my installs of the GUI's somehow change to the desktop kernel? If so, all my testing in now invalidated- as I'm supposed to be testing on the "server kernel."
Ubuntu :: New Installation On A Desktop Computer - Your System Encoutered A Serious Kernel Problem
Jan 2, 2010What does this mean? Is it serious? It's regarding a new installation on a desktop computer, comes back after restart.
View 5 Replies View RelatedOpenSUSE Install :: System Freezing With Kernel 2.6.31.8-0.1-desktop
Jan 28, 2010After migrating from openSUSE-11.1 to openSUSE-11.2 together with a few further online updates including a kernel upgrade to 2.6.31.8-0.1-desktop, my system started freezing a couple of times for two days.
I made up my mind googling for "linux freeze", found a hint saying, that 2.6.31.8 causes trouble, fell back to 2.6.31.5-0.1-desktop, and voila: the problem is gone. What a relief!
The following describes my system:
Ubuntu Servers :: How To Disable Startup For Desktop During Booting System?
Apr 26, 2010How can I disable the startup for ubuntu's desktop during booting the system?I would like to start it manually.I tried to remove the /etc/init.d/gdm file but no help.
View 9 Replies View RelatedUbuntu :: Which Kernel To Use W/ Intel Core 2 Duo
Aug 20, 2010I've read that you can use specialized kernels for your hardware, and I was wondering if there's a kernel I can use for my Intel Core 2 duo. I read in a previous post about using a "smp" variant, but kinda wanted some confirmation. Here's CPU info:
Code:
processor : 0
vendor_id : GenuineIntel
[code]....
OpenSUSE Hardware :: Missing I2c-core.ko In 11.3 X86-64 (kernel 2.6.36)?
Nov 13, 2010I was bugging around with my nvidia driver and while reading README.txt I saw the following:
"NVIDIA has noted that in some distibutions, i2c support is enabled. However, the Linux kernel module i2c-core.o (2.4) or i2c-core.ko (2.6), which provides the export infrastructure, was not shipped. In this case, you will need to build the i2c support module. For directions on how to build and install your kernel's i2c support, refer to your distribution's documentation for configuring, building, and installing the kernel and associated modules."
So I checked if I have i2c-core.ko and I saw that it is not present as a built module, but only as a source code. So, my question is, is there any reason that the module is not shipped with openSUSE 11.3 x86_64 (I use the kernel HEAD repository)? Actually, does it make sense to use this module if I want to monitor the temperature of my GPU with sensors? How can I compile only that module and install it?
Programming :: Allocate A Cpu Core For Kernel Process?
Aug 3, 2010My system has Intel Xeon 4-core cpu(hyperthreading 8-core) and run 64-bit linux. I want to allocate one core for general process(kernel process & other processes). And then, I want to allocate the rest of core for the specific multi-thread program.
Q1: I know that I can pthread_setaffinity() for user-mode thread and mpstat for monitoring. So, how can I allocate a core for kernel process and monitor it?
Q2: How can I restrict use of the cores for the multi-thread program? I don't want kernel process to use the cores for the multi-thread program.
Debian Installation :: Kernel Failure After Lenny Install (on Core I7 870)?
Jan 5, 2011I just installed the lenny (amd64) on my new core i7 870 computer (with netinst), but the kernel failure message appeared everytime I booted into gnome. I don't know how to solve this problem. Sorry I don't have much experience with installing linux, though I have been its user for a few years.
View 4 Replies View RelatedUbuntu Servers :: What Is Core.1xxxx Files At /
Jan 25, 2010I have a VPS with Ubuntu 8.10 64bit and I was looking at / and found like 10.000 files from "core.1000" to "core.10000".What is that? Something I can delete or it is a application that I have installed?
Some of the files at "/":
-rw------- 1 root root 5435392 Jan 15 10:00 core.5755
-rw------- 1 root root 5562368 Dec 14 16:39 core.5757
-rw------- 1 root root 5160960 Dec 22 08:40 core.5758
[code]...
Ubuntu Servers :: AMD Turbo Core Not Working On 10.10?
Mar 18, 2011I have installed Ubuntu server 10.10 on my new computer which uses AMD Phenom II X6 1090T. But I have noticed that my CPU cores were not able to run at 3.6GHz at any time, even when I only have one CPU-intensive computing job. They are either at 3.2 GHz or 800 MHz, like this
Code:
$ cat /proc/cpuinfo | grep -i "cpu Mhz"
cpu MHz: 800.000
cpu MHz: 3200.000
cpu MHz: 3200.000
[code]....
My maximum CPU frequency seems to be locked at 3.2 Ghz:
Code:
$ dmesg | grep "pstate 0"
[ 1.595918] powernow-k8: 0 : pstate 0 (3200 MHz)
I goggled around and it seems that Linux 2.8.35 kernel have solved the problem. I just do not understand why it does not work on mine.
Code:
$ uname -a
Linux hogwarts 2.6.35-22-server #35-Ubuntu SMP Sat Oct 16 22:02:33 UTC 2010 x86_64 GNU/Linux
General :: Fedora 13 Desktop Effects Don't Work On Core I3
Mar 15, 2011I am using HP G62 Notebook running i3 with intel(R) HD graphics card. I have installed fedora 13 and the display is not so good as it used to be when i used my old laptop and desktop effects require me to have 3D acceleration.
View 3 Replies View RelatedCentOS 5 Hardware :: Recommend A Pre-built Core I7 Desktop?
Jun 21, 2010Can anyone recommend a pre-built Core i7 desktop on which CentOS 5 can be easily installed ? It will not be used for gaming. We are considering the Aspire M5811 and the Vostro 430, however I heard that there is an RHEL bug with the NIC on the latter.
View 1 Replies View RelatedFedora :: Where To Find Vmlinux File Corresponding To Current Running Core 10 Kernel
Aug 19, 2009Where can I find the vmlinux file corresponding to my current running fedora core 10 kernel? I find only vmlinuz file in /boot
View 5 Replies View RelatedUbuntu Servers :: Package Not Found While Install Gnome-core On 10.04
Jul 29, 2010I'm having some problems getting the GUI installed in my Server 10.04 installation.
I've installed the Ubuntu server 10.04 32bit with a VMWare player on a Windows XP Pro host. Everything seems to have gone ok but at the end of the install it said that VMWare items are being installed and while that happens I can only use the terminal mode or I could wait for the GUI to load. Well the GUI never loaded so I logged in through the terminal.
I realized immediately that I'm over my head as I'm more familiar with DOS rather than bash or the terminal commands of Ubuntu. So I tried to look up on the internet (from my host machine) on how to start or install the GUI interface for the server. I've found lots of things that show commands like:
sudo apt-get install gnome gdm
or
sudo aptitude install gnome-core
but in all cases I get a message that the package is not found. So I'm wondering how do I find the package so that I can install this?
Ubuntu :: System Unstable In Z68 Core I7 2600k Environment?
May 20, 2011I recently assembled a new desktop computer, the following is the hardware details
CPU: intel core i7 2600
Motherboard chipset: intel Z68, GIGABYTE GA-Z68A-D3H-B3
Video card: Geforce GTX 560 Ti
I tried to install ubuntu 11.04 i386 and X86-64 version. Both of them are quite unstable.The system is easy to crash because of network problem and the internet connection is extremely slow. I also install window 7 in the same computer while the wired network is doing well.
Programming :: Kernel API *get_super (struct Block_device *bdev) Producing Error With Fedora Core 5
Feb 2, 2011I understand that block_device pointer *bd sholuld get initialized. Program should produce initialization error for *bd. Compiler is producing '->'. I am not understanding why?
[code]...
General :: Top CPU% Reported Over 100% On Single Core System?
Jul 12, 2010I am running CPU tests on a radio controller to determine max simultanious calls. A tool using top was developed so that we could get a good look at what exactly was happening on the process level, however we are mainly interested in one object running on the box.The box has a single core Celeron processsor running the Wind River Linux platform. The CPU usage from my object is frequently spiking over 100%. Doing some research online so far has led me to the fact that a multicore processor can do this however I have found no mention of a single core processor displaying this behavior.
View 6 Replies View RelatedUbuntu :: How To Downgrading Server Kernel To Desktop Kernel
Mar 7, 2011Currently I am looking at the following way to solve my problem that uses more than 3GB RAM on 32-bit Ubuntu.
[url]
For various reasons, I am trying to downgrade server kernel to desktop kernel. Can anyone given me some ideas?
Ubuntu :: Run Dual Core - Crash - Single Core Runs Perfect
Apr 1, 2011i am running gigabyte GA-M68M-S2P and AMD sempron 2.7. the problem is when i try to run dual core. it will boot and run for 2mins then it crashes. single core runs perfect.
View 6 Replies View RelatedUbuntu Installation :: Dual Core Support Core 2 E8500 Out Of Box?
Feb 14, 2010Just a quick question. Does Kubuntu Karmic support core 2 E8500 out of the box or do you need the SMP kernel?
View 3 Replies View RelatedOpenSUSE :: Virtualbox Problems (Error Kernel Headers For Kernel 2.6.34-12-desktop Cannot Be Found At)?
Jan 2, 2011I'm just installed OpenSuse 11.3 (64) on a 30gb SSD, hoping to get virtualbox 4.0 running to virtualize an instance of Windows 7.I went through some pain with my Nvidia video card and actually getting vb to install, but through lots of searching and tinkering got here.I created a vm in the vb control panel, but when I go to start it I get:
Code:
Failed to open a session for the virtual machine Win7Main.
The virtual machine 'Win7Main' has terminated unexpectedly during startup with exit code 1.
[code]....
Fedora Servers :: Configure Openssh, /etc/sshd_config On A New Installation Of Core 14?
Nov 11, 2010How to configure openssh, /etc/sshd_config on a new installation of Fedora Core 14? [since tt does not work right out of the box, I cannot ssh into it]
View 2 Replies View RelatedFedora :: Option For Multi-core Booting In System?
Sep 14, 2009I've tried searching the forums / google and haven't been able to come up with anything... in Debian-based distros there's an option that can be set to allow boot concurrency so that multiple processor cores can be used for the boot process. Windows also has an option similar to this to specify how many processor cores to use for boot.
Is there an option for multi-core booting in Fedora?
General :: Migrating To 64bit Quad Core System
Mar 11, 2010In the past, I've deployed new 64 bit systems and I've worked on and developed on 64 bit systems. But until a week ago, my workstation was a 32 bit system. Now, it is a 64 bit quad core Phenom II system, and I suppose I need to start the migration to 64 bit Linux. I do not want to blow off my system and rebuild it. This particular system dates back a decade and through many many updates. There is some digital debris in it, but there is also a fair amount of customization that I have implemented either for my own purposes or for customers, and to lose that customization would represent a headache for me.
What I want to do is install a 64 bit system over top of the 32 bit system. It is my hope that doing this would install the necessary 64 bit libraries, while not impacting the existing 32 bit libraries (except with some possible symlink problems). I then, hopefully, could boot into a 64 bit kernel while still running 32 bit programs. Is this feasible? My backup system is comprehensive; I COULD just try it and back up if my system became hosed. But I'd rather not; I have a lot of work to do and I'd rather not learn by doing in this case.
OpenSUSE Install :: Time Wrong In XEN Kernel But Right In Desktop Kernel?
Feb 11, 2010I have a system running openSUSE 11.2 with Desktop and XEN kernel, as well as Windows 7 (not by choice though...). I have noticed a strange time issue, with Windows 7 and the desktop kernel the time is correct (like for example now: 1:32 PM) but in the XEN kernel it is ahead several hours (6:32 PM). If it was an issue between openSUSE and windows then I would think that it is a problem with the system clock but I don't know what would cause a time issue between kernels like that.
View 6 Replies View RelatedOpenSUSE Install :: Differences Between Kernel Default And Kernel Desktop?
Jul 21, 2010differences between Kernel Default and Kernel Desktop? I've found some past threads like this link and this other link, and some other google info, which suggest the only difference would be the io scheduler. Also, I see the default grub choice is "Desktop" and not "Default", so I take this as a suggestion to prefer one over the other.
However, my broadcom 4312 wireless only works on the "default" and not on the "desktop" kernel, so I guess there must be other differences. I just want to evaluate which one is the less long-term risk option to go.
Ubuntu Servers :: Lucid X86 Installation Disk - Gets To 17% Copy On Fs-core-modules-2.6.32.21-generic-di And Hangs
Apr 30, 2010I downloaded the x86 server version for Lucid twice today. Both times before burn the md5 match those published on the Ubuntu site. I am attempting to install the system on a Dell poweredge 2500. 2x 1.4 gb P4 procs, 1 gb ram, 750 GB HDD (raid) Boot to installer. it goes through the standard language checks, keyboard, checks for cdrom, then attempts to start copying files.
It gets to 17% copy on fs-core-modules-2.6.32.21-generic-di and hangs there for 5 minutes or so. Then comes back with the error that it could not get the file and asks if I want to retry. all retries lead back to this error. As I said, MD5 is exact, burner does not complain of a bad burn, and disk is closed at the end of the burn. so, has anyone else been able to install Lucid server x86? burned four disks today, one pair on two different burners. All fail at 17% retrieving that file.