I noticed that ubuntu only detects 1 core on a mini 3.1 dual core. Has anyone the sam issue? Or has someone an idear an what's happening. Already tried 32 bit and 64bit.
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I'm using an Apple bluetooth keyboard, model A1016 the one with a white bottom inside clear plastic. The machine is a Mac Mini (2,1) and I also have an Apple bluetooth mouse. The mouse works fine on Ubuntu 10.04. The keyboard has issues.
When I add the keyboard using the bluetooth applet, I find that I can't assign a specified PIN. I have to use automatic PIN, and then type the random number presented. That works until I reboot the machine.
After reboot the bluetooth applet menu shows both the mouse (connected) and the keyboard (not connected). If I tell it to connect the keyboard, nothing happens. The only thing I can do is delete the keyboard, re-add it, with a new random PIN.
I set up my Mac Mini to dual boot Windows 7 and Ubuntu. I started with Windows only, and allowed it to rewrite the partition table (GPT/MBR). When I tried to install Ubuntu, it didn't see Windows until I used Gdisk to delete the GPT portion. Then it recognized the Windows partition and installed Ubuntu as per normal. Now when I boot, I get GRUB and the option to boot Ubuntu or Windows 7. The only problem is that the USB keyboard (Aluminum or standard PC keyboard) doesn't work until an OS is loaded.
Is this an EFI problem? I'm starting to think that EFI is required for USB keyboard support at bootup since it replaces the BIOS functionality. Is this even remotely accurate? Did I mess things up by not going the rEFIt route? I'm not sure what I can do at this juncture as I can only boot into Ubuntu.
I could install OS X, rEFIt, then Windows and Ubuntu, keeping rEFIt as the boot loader, but if there's an easy solution I'd like to avoid that. More importantly, I'd like to understand what's going on.
Im having an odd problem with an installation of 10.04 on my Macbook (the white one with firewire, dunno which generation). Sound works fine from built-in speakers, but when i plug in headphones i have no sound at all..
The levels in alsamixer are all fine, so no problem there..
I've got a final revision of the G4 Mac mini, the 1.5GHz model, dual booting 10.04 LTS and OS X. One of the issues I've had is that the internal speaker doesn't work under Linux, or so it's been reported on various post and sites. It turns out it's a simple matter of flipping some ALSA control options. With an ALSA mixer you must enable both the Speaker and the Headphone to get audio to play over the internal speaker. It will still play over the external headphones/speakers if they are still plugged in. I'm not sure if this is a problem with the ALSA, OSS, PCM or snd_powermac drivers or just something setup wonky in the configs. I've used both GNOME ALSA Mixer GUI and the alsamixer command line tool to do this. The alsamixer tool will mostly work in an X-term, as the F-keys don't pass though. It is fully functional on a console login. I also noticed that audio plays back per-user. When I switch from X to a console he sound is cut off, and when I get logged in as the same user the audio comes right back in.
View 1 Replies View RelatedI've been attempting to boot Ubuntu on my Mac Mini with absolutely no success. I tried 32-bit and 64-bit versions of 10.10 and 10.04. In all cases, I see the little keyboard and man at the bottom of the screen and then the screen goes black (i.e. my monitor stops receiving input).
My monitor is connect via the HDMI-to-DVI convertor, so is this a driver issue related to that?
Just bought a new Mac Mini, no optical drive. Using a USB drive, I can get to the EFI grub menu, and boot to the installer menu, but from there the keyboard (USB) doesn't work at all. I've tried every combination of boot flag and am at my wits end. Booting using BIOS results in a "Boot error" message, no grub.Update:Using the 11.04 amd64 iso, I have a slightly different problem. Eventually after grub, I get kicked to a minimal shell (dropbear maybe?) with the complaint "unable to find a live medium." However, from other searches, this may be an issue with a corrupt USB disk, and not a problem with the Mac/EFI boot process.
View 1 Replies View RelatedAnywhere from 2 -> 6 times a day, my computer will freeze up. If any audio was playing, it will repeat the last few seconds over and over again. I've been dealing with the problem for a couple of months now, with no solutions.
View 1 Replies View RelatedI have a MacBook Pro 5,2 with the Mini-DisplayPort for external video. I have the displayport-VGA adapter which works (albeit sometimes at an unideal resolution) with an array of projectors, LCDs and other stuff. Everything except for my nice Samsung SyncMaster 2433. When I plug it in, I get the weird rainbow screwed up look with only the far left hand column looking normal and the rest looking like I've got the wrong refresh rate or something. However, the same setup works when I boot from Karmic to OS X. Note this also didn't work in Jaunty. I'm using the NVidia 185.18.36.
It also did not work through a KVM switch (long shot) but oddly the "Monitor Out" works when I run this monitor through my Dell projector. if I unplug the projector and then plug the monitor in directly without rescanning for displays, the monitor continues to work.
I am installing Ubuntu 10.04 on my new Mac Mini. It has 2 500GB hard-drives, and I have created a partition for Ubuntu. During installation, however, Ubuntu is not able to detect my disk drive, neither my network interface. So I am not able to 'Partition Disks' which is part of Ubuntu installation. Did any of you encounter this problem? Any solutions or workarounds? Should I setup my disks in anyway before installation or use boot args?
View 2 Replies View RelatedI just purchased a new Mac Mini 2010 to replace my older Mac Mini 2006 Intel. The problem I am having is that when I boot Ubuntu from the MM 2010 CD-ROM the initial menu that allows you to select a language is displayed, but after that the screen goes blank and stays blank. I am using the HDMI port to DVI output and I am wonder if that could be a cause of the blank screen. Is there a boot command that I can use to allow Ubuntu to display with the HDMI port or other item I need to fix to get Ubuntu CD installer video display to work with my MM 2010?
View 1 Replies View RelatedI had my MacBook configured with a triple boot (Windows 7, Mac OSX and Ubuntu 10.04). Everything was working perfectly until I decided to upgrade to Ubuntu 10.10 and screwed everything up haha.
I formated the Ubuntu partition and installed 10.10 on it, but I made the mistake of not selecting the correct place for the boot loader. I went the non confusing way and decided to format the Ubuntu and Windows 7 partition to start all over again.
The problem si this, for some reason rEFIT shows a Linux partition when there isn't any, I just have my HD partitioned like this:
This is what rEFIT shows:
The partitions are empty, I haven't installed any OS yet.
Do you know how can I delete that extra Linux icon?
I want to give a new life to my old Mac Mini that has become too weak for Mac OS ...I successfully installed the Ubuntu 9.10 PPC version (alternate) on the machine. EXCEPT for the support of the wifi antenna. Network manager says: "device not ready". I suppose there is a standard tweak to get over this hurdle.
View 5 Replies View Relatedi have installed bless hex editor on my fedora 14 laptop.However when i open it ,it shows "mono-core wants to install a font language code not matched: utf-8" i am not able to use bless hex editor properly.
View 4 Replies View Relatedi 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 RelatedJust 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 RelatedI'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 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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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?
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 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)?.
View 5 Replies View RelatedI 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?
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?
My connection manager shows wired connections and shows wireless as being disabled. here is some terminal info getting wireless going?
Here is a bunch of things I have tried and the results.
nixon@nixon-desktop:~$ sudo ifup wlan0
Ignoring unknown interface wlan0=wlan0.
nixon@nixon-desktop:~$ sudo ifdown wlan0
ifdown: interface wlan0 not configured
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I'm encountering a strange problem. I need to open and forward all UDP and TCP ports related to VoIPtelephony (5000:32000) in the Suse 11.1 server that's acting as router/firewall in our setup. The ports must redirect to a Asterisk server in the local network. (This server has the IP adress 192.168.0.3)I've opened ports in Yast (Firewall>Ports>Advanced) and putted in some masquerading rulesirewall>Masquerading):0/0,192.168.0.3,tcp,5000:31000,5000:310000/0,192.168.0.3,udp,5000:31000,5000:31000when I do a nmap localhost I get:Starting Nmap 4.75 at 2010-01-08 16:52 CETInteresting ports on localhost (127.0.0.1):
Not shown: 991 closed ports
PORT STATE SERVICE
21/tcp open ftp
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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.
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)
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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
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