Ubuntu :: Use Of Grub Different Than With Core 9?

Jan 4, 2009

I'm running ubuntu 8.10. Most stuff seems to run smoothly and with no breaking problem but use of grub with ubuntu is different than with Core 9.

whereis grub produces /usr/sbin/grub and /usr/lib/grub and /etc/grub.d/grub
(this as su or just ordinary user) files that do exist are owned by root and in group root (why I tried as su and ordinary me). I seem to be blind to menu.1st.

Last distro was core 9 with which I did nor have this problem.

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OpenSUSE Install :: Add Fedora Core 11 To Suse's Grub Menu?

Jul 27, 2010

adding Fedora Core 11 to opensuse's GRUB menu so that I can boot FC11 from it. Here's what fdisk -l shows:

Device Boot Start End Blocks Id System
/dev/sda1 1 13 102400 7 HPFS/NTFS
Partition 1 does not end on cylinder boundary.

[code]......

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Ubuntu Installation :: Grub-setup: Warn: Your Embedding Area Is Unusually Small. Core.img Won't Fit In It

May 3, 2011

I would like to backup my entire Ubuntu installation (/boot, swap and /) at /dev/sda (4GB) to /dev/sdb (10GB).I recreated the exact partitions on /dev/sdb, formatted and cp -rp all the files over.For /boot, I used

Code:

dd if=/dev/sda1 of=/dev/sdb1

It didn't boot successfully as the system kept rebooting. I then tried to install grub onto the MBR and boot partition (mounted at /mnt/tempboot).

Code:

grub-install --force --no-floppy --root-directory=/mnt/tempboot /dev/sdb

But I get an error:

Code:

grub-setup: warn: Your embedding area is unusually small. core.img won't fit in it.

Anyhow, since I forced grub-install, I believe the grub is installed. I rebooted the system and I get a grub prompt:

Code:

grub>

Grub seems to not find my grub.cfg but it is present.

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Fedora Installation :: Grub Boot Loader Doesn't Work For Core 12 And WinXP?

Jun 7, 2010

I have an HP Pavilion m7480n PC with Windows XP installed on the C-drive. I successfully installed FC 12 onto the spare USB drive. When I rebooted the PC all I got was a blinking underscore at the extreme upper left position of a totally black screen. After a bit of experimenting I found that if I hit the F1 key during the boot process, go into the BIOS setup, do nothing within the setup, and press ESC to get out of the setup then the PC will go back into the boot cycle a second time. During the second time however a small text message appears with words to the effect "Press any key to enter GRUB..." after which the GRUB splash screen comes up with the choice for FC 12 or "Other" (referring to Win XP). At that point I can boot into either one.

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Ubuntu :: Run Dual Core - Crash - Single Core Runs Perfect

Apr 1, 2011

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.

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Ubuntu Installation :: Dual Core Support Core 2 E8500 Out Of Box?

Feb 14, 2010

Just a quick question. Does Kubuntu Karmic support core 2 E8500 out of the box or do you need the SMP kernel?

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Ubuntu :: Lucid Lynx - Dual Core - One Core Always At 100%

May 15, 2010

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

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Fedora Installation :: Dual Core Only Showing Single Core On F14?

Nov 3, 2010

I 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

[Code]....

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OpenSUSE :: Get Application To Utilize More Than One Core In Multi-core Setup?

Mar 27, 2011

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

[Code].....

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Programming :: Multi-core Support - Control On What Core Will A Thread Run

Oct 31, 2010

Is 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?

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Debian :: Wheezy Only Recognizes 1 Core Or Dual Core CPU?

Sep 7, 2011

I 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.

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General :: Only One Core Of Dual Core Processor Are Working

Mar 14, 2011

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.

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Programming :: Get Process Running CPU Core And The Utilization On That Core?

Apr 27, 2010

Assume 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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Fedora Installation :: Upgrading From Core 4 To Core 10?

May 20, 2009

I have created a virtual machine of a system running Fedora Core 4 and I need to upgrade it to Fedora Core 10. Based on what I have read, it iis possible so I started theupgrade process. I get an error message saying that /dev/hda6 (my root paritition does not exist) even though it does.

Does the installer need to read a label from /etc/fstab? I executed tune2fs -L / /dev/hda6 amd ,and added LABEL=/ for the corresponding entry for fstab. but the FEDORA CORE 10 is still giving the same problems for the installation process. Should I upgrade to an intermediate verson like Fedora Core 7 first?

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General :: Processes And CPU 4-core - Which Core The Program Used?

Mar 26, 2011

I've a program that launches new processes, and wait for them to die before it exits. So, for example, my program is a process, and it launches 3 more processes, and when the 3 child processes end, it will exit.

As you see, at end of the example, the program used a total number of 4 processes.

1 - Now, I'm running this program in a CPU with 4 cores. This means that the program used each core for each process?

2 - How can I know which core the program used?

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Programming :: Core Dump Issues. Program Crashes But Does Not Generate Core Dump File?

Oct 7, 2009

I want to generate core dump files from my program when it crashes. Its a pretty big process and has about 10-11 threads in it.I have followed the documentation to enable core dump by setting ulimit to unlimited etc. I quickly tried "A demo program creating a core dump" from the following webpage, which succeeds in Segfault and dumping a core file in the directory that I configured.However, I tried running my original program and caused it to crash. I did this by making calls to kill(), raise() or the same null pointer access as shown in the webpage above. In each case, my program crashed but did not generate a core dump file. Am I missing something?My program is in C++ and my environment is Redhat 9.0 (kernel 2.4.20)

Going through the "Why do I NOT get a core dump?" section on the same webpage as above, I can see two potential problems. One - there are issues with the suid/sgid (bullet # 6). I am not able to change any settings with suid because my system does not contain either /proc/sys/fs/suid_dumpable or /proc/sys/kernel/suid_dumpableTwo, my program has threads in it and the bullet # 8 is the problem.

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CentOS 5 Hardware :: Infiniband (mlx4) Works On 16-core System But (now) Fails On 32-core System

Jan 27, 2010

We 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]....

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Ubuntu :: Only Single Core Active On Quad Core AMD When Acpi Is Active?

Jun 8, 2011

Only Single core active on quad core AMD when acpi is active.with acpi=offuname -aLinux dvip4 2.6.32-30-server #59-Ubuntu SMP Tue Mar 1 22:46:09 UTC 2011 x86_64 GNU/Linux

Code:
cat /proc/cpuinfo
processor : 0

[code]...

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Software :: Install Older Version Of Gcc 2.95.3 In Fedora Core 8 Or Fedora Core 12?

Mar 14, 2010

i download the rpm package of gcc .

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General :: Difference Between Fedora Core 4 And Fedora Core 14?

Jan 12, 2011

I am in school for my CIS degree and the book I am using this session covers Windows XP and Fedora Core 4. I am having trouble finding & downloading Fedora Core 4. My question is: Is there a big enough difference between Fedora Core 4 and Fedora Core 14 that I would not be able to use 14 instead of 4?

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Ubuntu :: GRUB 2 : Difference Between 'grub-pc', 'grub-efi' And 'grub-coreboot'?

Jan 6, 2010

I would like to know if there is any differences on how to install and to configure GRUB 2 in the different architectures (BIOS/IBM PC-Compatibles, EFI/MacIntel and Corebbot)? Does the Ubuntu installer automatically recognize the different architectures and install the appropriate GRUB 2 package ('grub-pc', 'grub-efi' or 'grub-coreboot' according to the arch)? Or does it just install 'grub-pc'? Is the location of GRUB 2's configuration files different depending on the arch of the computer? Or are they all located in '/boot/grub/', '/etc/grub/default' and '/etc/grub.d/', no matter the arch of the computer? Are the files' structure and options to configure GRUB 2 ('/etc/grub/default' and the scripts in '/etc/grub.d/') different depending on the arch of the computer?

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CentOS 5 :: Back Port The 5 USB HID Core Driver Version 2.6 Back To 4 USB HID Core Driver Version 2.0?

Nov 3, 2009

Is it possible to back port the centos5 USB HID core driver version 2.6 back to centos4 USB HID core driver version 2.0?

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General :: Edit Grub Menu From Initial Grub Screen - Possible To It's Own 'e' Option Or 'c' From Grub Command Line?

Nov 20, 2010

my Setup is Fedora 14 x64 + radeon hd 4830 i've downloaded .run package from ati site with latest driver for x64 systems. installed it, but didn't edited grub.conf becouse i didn't understood anything there (probably didn't spent enough time to get things understand) Now i've lost possibility to enter my Fedora system. during boot it lost it's modern blue boot screen (with filling drop), it was replaced by standard old boot screen with triple-color stripe. after this boot screen monitor start blinking going on and off. and on last step i'm getting "Fedora 14 boot bla bla bla something" on screen. nothing works except Ctrl+Alt+Delete. system reboots showing successful daemons shutting sequence. How can i edit grub menu from initial grub screen is it possible to it's own 'e' option or 'c' from grub command line?

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Ubuntu :: Why Does Installing Grub-doc Remove BOTH Grub-pc And Grub-common

Jan 3, 2010

I'm just slightly confused here, but... what the? Why does installing grub-doc remove BOTH grub-pc, and grub-common? So basically it seems like by installing grub-doc, I have uninstalled grub totally (yes, it is still there as the bootloader, but i have no way of updating it now!) from my system. What's the conflict between grub-doc and grub-pc, such that grub-pc has to be removed?

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Ubuntu :: Dual-core - One Cpu Always At 100%

May 2, 2010

I have a dual-core computer that I just upgraded to lucid lynx. when looking at the system monitor, one of the cpu's is always running at 100% and its not always the same one. Is this normal or do I have an issue? I would really like some info.

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Ubuntu :: One Core Is Always Running At 100%

May 27, 2010

I have just installed Ubuntu 10.04 on a new Dell. I have an Intel Core 2 Quad processor and I have noticed that one of the cores, sometimes 2, is almost always running at 100%. It is not always the same core and it switches between cores if I use the computer for a while.I searched the forums and came up with some similar problems and tried typing in the command "top" into terminal, but as a relatively new user I don't know what to do with that information.The only one that jumps out at me is that Root says it is using 100% CPU, which I didn't notice on other peoples posts.Also, is it bad for my computer if one of the cores runs so high?

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Ubuntu :: Sees Only 1 Core Instead Of 4?

Apr 27, 2011

Why does ubuntu only see a single core on my quad-core cpu? All cores are enabled in the bios.

Here are some details about my hardware...

$ dmesg | grep Phenom
[ 0.812775] powernow-k8: Found 1 AMD Phenom(tm) II X4 810 Processor processors (1 cpu cores) (version 2.20.00)
$ uname -a
Linux xyz 2.6.32-31-generic-pae #61-Ubuntu SMP Fri Apr 8 20:00:13 UTC 2011 i686 GNU/Linux

[Code].....

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Ubuntu :: Grub Update Error "update-grub Head: Cannot Open `/boot/grub/video.lst' For Reading: No Such File Or Directory"

Apr 7, 2010

after doing an upgrade to 10.4 and updating grub I get this message. how do I address this

[Code]...

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Software :: GRUB2 - Autoprobe "update Grub" Grub Seems To Detect All OS And Generates Grub.cfg

Feb 28, 2011

I have an old BIOS (only 149 GB detected in 160 GB drive). I have installed very few OS as a result - Windows in first 80 GB , 2 distros (20 GB each) in next 40 MB which is within the 149 GB. On issue of "update-grub" grub seems to detect all OS and generates grub.cfg. But on boot , one distro does not appear in the menu.

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Ubuntu :: Support For 6 Core CPUs?

May 9, 2010

I have just purchased an AMD Phenom II 1055T 6 Core CPU to replace my aging CPU. The problem is only 1 core is visible to Ubuntu, Does it actually support 6 cores?

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