Can 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 RepliesIm looking for a pci wifi card for my media pc, I would prefer wired, but we are moving soon , so i dont want to take the time to run a wire through the house. Im looking for one that will work out of the box with Ubuntu.
View 1 Replies View RelatedI'm using the latest Centos on an older IBM server which only has USB1.1 ports, it works great and is very reliable. I would really like to add a USB2.0 card to the system. Can anyone recommend a reliable PCI card which will work with Centos, preferably one which does not require any special drivers to be loaded.
View 1 Replies View RelatedWe 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)
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So I just recently built a desktop and the main purpose is directed toward gaming, etc. But I guess I haven't set-up my BIOS correctly, but when it comes to knowing what I'm doing in the BIOS it's nada. Anyways, I'm having mainly a timing and voltage issue, I start the PC up and it wants to start, shuts down and restarts successfully.
The hardware:
P55 EVGA SLI motherboard
Intel core i7-860 Lynnfield 2.8GHz 8MB L3 Cache LGA 1156 95w Quad-core
Visiontek 900301 Radeon HD 5750 1GB 128-bit GDDR 5 PCI express 2.0 x16
8GB 240-pin DDR3 SDRAM DDR3 1333
1TB Sata HDD
500W power supply
i have Linux Mint, i was playing around with GTK+3.0, i rebooted then i wanted to switch desktop environments.i clicked the log off button but i saw the character 'E' appear all over the screen. everything just stopped at that point. i had to reboot. after rebooting i installed KDE with aptitude then changed from gdm to kdm. my computer would not boot. i burned a Ubuntu rescue remix live cd and reverted back to gdm. i can now boot. i ran Code:make uninstallin an attempt to revert back to GTK+2, it claimed to work. i rebooted GTK-3.0 was still installed. my desktop is very ugly. i can not change desktop environments and themes do not work at all, nor can i change colors. i want my old GUI back
View 1 Replies View RelatedI'm trying to rebuild a .src.rpm to produce a debuginfo rpm but one is not being built. The normal .rpm builds just fine.
I have redhat-rpm-config installed, and the following is in my .rpmmacros:
%_topdir /home/kerrg/buildroot
%_toppath /home/kerrg/buildroot/tmp
%_signature gpg
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I'm very new to CENTOS here. Just wondering if there's any built-in email capability in CENT-OS 5?
View 10 Replies View RelatedHere is my result from lspci |grep ther
[root@ast ~]# lspci |grep ther
00:19.0 Ethernet controller: Intel Corporation 82567LF-2 Gigabit Network Connection
01:00.0 Ethernet controller: D-Link System Inc RTL8139 Ethernet (rev 10)
I have noticed that my 1st ethernet which is Intel is not install yet in my system, there is no (rev number) how can i install my Intel LAN (built-in)
We're planning on getting computers with built-in Agere et131x NICs, and were wondering if these would be automatically detected/installed upon installing CentOS 5.3 ?
View 4 Replies View RelatedIs 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 View RelatedI 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 RelatedI 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.
I have a multi-threaded application using pthreads. On application crash or when signalling with 'kill -s 6' the core file created by the 2.6.18-128 kernel on CentOS 5.3 shows only one single thread. Core file saved with gcore in gdb shows all running threads properly so the problem is clearly in the kernel. I tested CentOS 5.2 (kernel 2.6.28-92) and it works correctly.
what's wrong with CentOS 5.3 kernels?
The situation: computer based on Asus P6T motherboard. Two RAIDS:
- 'boot', on motherboard built-in RAID controller (CentOS 5.5 installed on this RAID)
- 'data' on 3dware RAID card
At one moment a CPU fan fails and the system halts. After the fan is replaced, BIOS informs it's reset and all the inner controller data are forgotten. After I switch it to 'RAID' mode, it remembers it was a mirror raid (RAID 1) installed, but the file system on it is completely trashed.
The 'data' RAID run by external controller isn't affected by the system failure. Three questions:
- is it worth trying to install OS on the rebuilt 'boot' RAID once again? Looks like if BIOS settings are lost for some reason, there's chance of completely losing RAID data
- has someone encountered similar problem with built-in RAID nd was it possible to recover data?
- will the software RAID be worth creating instead of using hardware RAID to replace the 'boot' drive?
I need to upgrade one of our systems from its current distribution, Fedora Core 7, to the most recent version distribution, release 5.4, of the CentOS operating system. Can I do an in-place upgrade of the operating system without any adverse side-effects? Are there any issues that I should be concerned with before proceeding?
View 10 Replies View RelatedJust installed centOS 52 x86_64 on a Core 2 Duo (E6750). From the /proc/cpuinfo I see that only one processor is detected. Any parameter on the BIOS to be changed?
View 2 Replies View RelatedI modified the following files according to all I found after googling the net:
/etc/security/limits.conf
* soft core unlimited
/etc/profile
ulimit -c unlimited[code]....
I don't get a core file when I kill -11 <pid_of_sleep>
System is centos 5.3
Sadly, I google'd the heck out of this and even the vmware community has no answers. So, I decided to turn to the experts and see if you can provide a better solution than [URL]. The system sees both CPU's and all of the cores (cat /proc/cpuinfo). I have tried with HT and without HT (I never run HT anymore; seems to hurt performance in my workloads). I've tried the recent and newest kernels for CentOS 5.4 and still have no luck. There seems to be lots of people having this issue, but no real solutions.
Dell PE R710 with 2x Xeon CPU X5550
kernel 2.6.18-164.11.1.el5 #1 SMP x86_64
Fresh CentOS 5.4 install
I'm trying to setup CentOS 5.4 x86_64 on a new machine but am running into problems. The machine is: CPU: Intel Core i7-860 RAM: 4GiB DDR3 Motherboard: Intel DQ57TM When booting from the disc, I get to the initial splash screen but almost immediately after that, I get a kernel panic.
None of the lines leading up to it mean much to me so I'm not sure what to copy here but the last line says: <0>Kernel panic - not syncing: Fatal exception
i 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 RelatedIs it possible to back port the centos5 USB HID core driver version 2.6 back to centos4 USB HID core driver version 2.0?
View 2 Replies View RelatedI just loaded F14 on an old Dell Dimension 3000 with a dual core processor but only one is showing. Here's the output from top:
processor: 0
vendor_id: GenuineIntel
cpu family: 15
model: 4
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I have a command line OCR program called OCR Shop XTR (Vividata corp) that I am using on a system with a 6-core AMD chip. I changed the bios so that the 6-cores were activated, but htop shows me that while the program is running, I am only getting activity on one core (the program maxes out the one core with consistent usage between 97% and 100%).
I have read that many programs are not written to take advantage of multiple core cpu's. However, I am just hoping that there is some way to get this program to take advantage of the extra cores. Does anyone know of a way to invoke programs from the command line which would spread the workload out among additional cores?
Here is the output of uname -a:Linux linux 2.6.37.1-1.2-desktop #1 SMP PREEMPT 2011-02-21 10:34:10 +0100 i686 athlon i386 GNU/LinuxAnd here is the output for one of the cores from cat /proc/cpuinfo:processor : 5
vendor_id : AuthenticAMD
cpu family : 16
model : 10
model name : AMD Phenom(tm) II X6 1100T Processor
stepping : 0
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Just 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 RelatedIs there any Linux API that will let me control on what core will a thread run? If not, do I have to use assembly language?
View 2 Replies View RelatedI have now installed Wheezy on two different hard drives and in each case it seems only one CPU of my dual core CPU computer is recognized. System Monitor, Gkrellm and lscpu show just one when prior to the new install the old Wheezy showed both CPU's. I have put the hard drive into two other computers with dual core CPU's and all show just one CPU.
Interestingly System Profiler and Benchmark (hardinfo?) > Devices > Processors now show a large amount of processor infomation when with the old Wheezy I would only see both CPU's listed and nothing else.
I've a Compaq CQ61 laptop, and i noticed that one of the cores is always at 100%.
I didn't check the duration of the battery but surely it will "eat" my battery in a hurry
I recently read in a forum that by default the Linux kernel only activates one of two cores in a dual core processor. Searching online gave one option to find out and that was the mpstat command. I therefore ran the command and got the following output.As the result says, it shows only 1 cpu. I was wondering what I could do to activate both cores in my machine, and whether doing so was going to cause me any problems.
View 14 Replies View RelatedAssume someone bind a particular process to a particular CPU core(In multi core machine) by using sched_setaffinity() like functions. Then how we can get that process running core id and CPU core utilisation of that process on that running CPU core(Pragmatically or by a Linux command)?.
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