I have a Dell OPTIPLEX 380 CPU. It keeps on hanging only after running any 2-3 programmes simultaneously.  Here is the configuration   RAM - 2GB Processor- core 2 duo Hard Drive - 128 GB(HDD) OS - ubuntu 14.04 LTS   How can I fix it?  We have work for at least 10 hours a day on this system.  Is increasing the RAM is the only option to fix it?
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For a given hardware configuration, how do I find out if Ubuntu will run on it? What considerations should I take into account when choosing an Ubuntu version and  such as:    with a lighter desktop than the usual Gnome and Unity  with the even lighter LXDE desktop   Obviously Ubuntu does not run on some processor architectures. So how do I go about choosing the right version and derivate. How can I find out the minmal system requirements?
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All operating systems freeze sometimes, and Ubuntu is no exception. What should I do to regain control when...   just one program stops responding? nothing at all responds to mouse clicks or key presses? the mouse stops moving entirely? I have an    In what order should I try various solutions before deciding to pull the power plug?  What should I do when starting up Ubuntu fails?  Is there a diagnostic procedure I can follow?
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When I log in with LightDM on my laptop running Debian Unstable, it recently started to hang for around 2 minutes until journalctl shows the message kernel: random: crng init done. When I press random keys on my keyboard while it hangs, it logs in faster (around 10 seconds). Before I didn't have this issue, is there any way I can fix it?  Edit: using linux-image-4.15.0-3-amd64 instead of linux-image-4.16.0-1-amd64 works, but I don't want to use an older kernel.
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My processor is an Intel Core 2 Duo P8600 (2.40GHz). As far as I know that's a 64-bit processor - I'm a bit confused as the architecture is called AMD 64, is this a generic name given to 64-bit architectures? I've heard of x64 but can't see a release labelled with this.
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Don't Know why my PC heats up while i use ubuntu (any version). I have dell i7 processor system with 1 GB nvidia. Still finding solution but no positive and effective solution found. any suggestion
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Ubuntu 16.04 has been hanging on me ~1x per day.  This happens when I am in the middle of web browsing or using a desktop application, not when booting.  When it does, the mouse pointer will still move freely, but clicking or keystrokes have no effect on my system until I do a hard reboot.  What is the best way for me to debug this?  Here is some information:  selah@selah-Precision-Tower-5810:~$ uname -a Linux selah-Precision-Tower-5810 4.4.0-59-generic #80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux   Also, in case it is relevant, I have a "very big" monitor, a Dell 42" at 3840x2160 resolution.  selah@selah-Precision-Tower-5810:~$ lspci | grep VGA 03:00.0 VGA compatible controller: NVIDIA Corporation GM107GL [Quadro K2200] (rev a2)     UPDATE:  Following Artyom's advice I found the following message in my error logs:   Apr 27 09:47:25 selah-Precision-Tower-5810 kernel: nouveau 0000:03:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] Apr 27 09:47:29 selah-Precision-Tower-5810 kernel: nouveau 0000:03:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] Apr 27 09:47:33 selah-Precision-Tower-5810 kernel: nouveau 0000:03:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]   Which has let me to this bug which describes similar behavior:
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I'm attempting to limit a process to a given number of CPU cores. According to the taskset man page and , the following should work:  [fedora@dfarrell-opendaylight-cbench-devel ~]$ taskset -pc 0 &lt;PID&gt; pid 24395's current affinity list: 0-3 pid 24395's new affinity list: 0   To put it simply - this doesn't work. Putting the process under load and watching top, it sits around 350% CPU usage (same as without taskset). It should max out at 100%.  I can properly set affinity via taskset -c 0 &lt;cmd to start process&gt; at process spawn time. Using cpulimit -p &lt;PID&gt; -l 99 also . In both cases, putting the process under the same load results in it maxing out at 100% CPU usage.  What's going wrong here?
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Is Dell pre-installed Ubuntu the same as the general release? Or does the Dell pre-installed version have special Dell drivers etc?  I bought a Dell XPS 9730 with 16.04 which I replaced with 18.04. It is working fine (except suspend-on-close doesn't really suspend but that seems to be a known problem). I am just wondering if I need to look out for a Dell-special 18.04 when Dell finally start shipping it, or do they just ship the standard version of Ubuntu? (The XPS 13 is one of Dell's "Canonical approved" machines.)  Output of fdisk -l (all the 'loop's are snap apps but each app appears twice in lsblk, but that is the subject of another Question!):     Disk /dev/loop0: 3.7 MiB, 3813376 bytes, 7448 sectors Units: sectors   of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512   bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop1: 86.6 MiB, 90812416 bytes, 177368 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop2: 21 MiB, 22003712 bytes, 42976 sectors Units: sectors   of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512   bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop3: 12.2 MiB, 12804096 bytes, 25008 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop4: 140 MiB, 146841600 bytes, 286800 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop5: 2.3 MiB, 2428928 bytes, 4744 sectors Units: sectors   of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512   bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop6: 140 MiB, 146841600 bytes, 286800 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop7: 86.6 MiB, 90759168 bytes, 177264 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/nvme0n1: 953.9 GiB, 1024209543168 bytes, 2000409264 sectors   Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical):   512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512   bytes Disklabel type: gpt Disk identifier:   81530E63-3D66-4216-8090-8DA401ADA1B5      Device           Start        End    Sectors   Size Type   /dev/nvme0n1p1    2048    1050623    1048576   512M EFI System   /dev/nvme0n1p2 1050624 2000408575 1999357952 953.4G Linux filesystem      Disk /dev/loop8: 1.6 MiB, 1691648 bytes, 3304 sectors Units: sectors   of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512   bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop9: 13 MiB, 13594624 bytes, 26552 sectors Units: sectors   of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512   bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop10: 86.6 MiB, 90828800 bytes, 177400 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop11: 3.3 MiB, 3411968 bytes, 6664 sectors Units: sectors   of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512   bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop12: 139.5 MiB, 146276352 bytes, 285696 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes      Disk /dev/loop13: 21.6 MiB, 22609920 bytes, 44160 sectors Units:   sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512   bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes
92790
In a conversation with the network administator, I mentioned that my machine was a dual-core.  He told me it was not.  I brought up the task manager, went to the perfomance tab, and showed him that there are two separate CPU usage graphs.  I have a quad-core machine at home and it has four graphs.  He told there were two graphs on this particular machine because of hyper-threading.  I used to have a hyper-thread pentium 4 processor back in the day, but I never fully understood what it meant.  So what is the difference between hyper threading and dual-core?  And how do you tell which one you have?
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My blender hangs very often for a minute on two. Sometimes it doesn't, in 90% cases it does. Typical places where it hangs are:   at startup, just after showing console window, before showing UI. at file -> Open, before showing file / folders UI at File -> Export -> FBX - before showing UI, it hangs while the menus is still visible   This makes it really annoying to work with. What could be the reason for the problem? I tried disconnecting the network, because I thought the network drives might confuse it, but this didn't change anything. My files are all on local drives.  I run on Windows 64-bit, hardware is a decent laptop with 16 GB RAM, but it seems the problem happens when nothing is really going on, what would require gears.  The console doesn't print anything new in these cases.
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I have 3 old computers lying around right now running a P2 at 800 MHz(?), Intel Mobile 1.6 GHz, AMD Athlon XP 2000+ at 1.66 GHz, and (might not use this) P4 at 2.7 GHz, all with 512 MB Ram, and am considering clustering them together for fun/knowledge. They would be running an undecided version of linux, preferably ubuntu based.   The issue is what I want to use it for: general computing and occasional video encoding. By general computing I mean day to day tasks. However I'm not sure if every program started by a single X session is going to exist on the same machine, defeating the purpose of such a system. Will programs be split up or exist on one machine?  Second, assuming this is running 100baseT ethernet (not sure if the PCI slot itself could handle Gigabit), would the speed of having a program exist over the network be an issue? It seems that the constant asking of various things in RAM would be quite slow.  And before you say "buy another computer!", that's not the point of this question. I'm asking would it be usable, not necessarily practical. And yes I know, this is going to be extreamly power consuming.
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Recently while using my laptop (Dell XPZ15z) all of a sudden the CPU usage is spiking to 80-100% then will drop in say 5-7 sec. I am not running any application or process that requires such CPU usage.  I am doing a lot of online gaming, while playing the same thing happens but the additional things happening are that the ping becomes 1500+ all of a sudden from 90-130 and then its showing network connection problem. Then I regain connection again in 5-7 sec. But now i noticed its the same time while my CPU usage is going above 80%.  Another incident that occurred is that while I was watching an YouTube video, all of sudden the video began to hang even though it was buffered earlier. Then the video stopped further playing and I saw that the CPU usage was way beyond 80 nearly 100%.  I increased the virtual page memory to almost 10 GB in all the drives. But it seems to have no effect as the problem continues. I have up to date anti-virus (Avast) and I scanned the whole system but no virus also have been found.  My system configuration is as follows:    Intel Core i7-2640M 2.80GHz  8Gb DDR2(4*2)  750Gb HDD  Nvidia 525M graphics card
30449
I installed Windows 7 in a 3-year-old machine. It installed successfully, took all drivers and running great, but every 5-6 minutes it freezes for a few seconds... 30 seconds to 1 minute, and then it comes back alive.  I checked Event Viewer, but nothing matched the frozen timeline.  I would appreciate any help on how to detect what is causing it, service or hardware.  After it comes alive, everything runs normal. I did run Task Manager and checked CPU usage, at the time it freezes just before and after that no task took more CPU or memory. It was like an idle machine.  There aren't any external USB drives or devices. It is an on-board Intel desktop board with SATA HDD, and the SATA HDD is running in absolute good mode.
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I have a dell laptop with 4GB of ram and 500GB of storage.I just finished installing windows 8.1 32bit version, which utilizes 3GB of ram.  Can I install and run Ubuntu to utilize that unusable portion of Ram.Then how?  Thanks in advance
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I have a process for an application which needs to run, but ends up using far too much IO usage for what it does. And really crashes my computer, making it impossible to do anything else whilst it is running.  So I was wondering if there is a way to limit IO usage, RAM and CPU for a given process? And its sub-processes of course.  This is on my Ubuntu 18.04 LTS system.
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Problem  I installed Ubuntu 12.04 on a Dell Inspiron 15R. As soon as I boot, the fan starts at full speed and stays constantly on. I've seen similar posts, where installing fan control apps are recommended like  i8kmon   jupiter mesa-utils   but in general, these do not allow for automatic fan speed control and one has to manually set the fan speed, while keeping track of the processor's temperature. See:   Technical specs   - Processor: Intel® Core™ i5-3337U CPU @ 1.80GHz × 4  - RAM: 6 GB  - Disk: 500 GB  - Graphics: Standard Intel drivers  - OS type: Ubuntu 12.04 (64-bit)   lm-sensors  coretemp-isa-0000 Adapter: ISA adapter Physical id 0:  +45.0°C  (high = +87.0°C, crit = +105.0°C) Core 0:         +40.0°C  (high = +87.0°C, crit = +105.0°C) Core 1:         +45.0°C  (high = +87.0°C, crit = +105.0°C)   Any hint on how to solve this ?
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When I start my PC, it boots into Windows (Windows 7 32-bit) quite happily, I login and the main Windows screen appears. At that point, however, the system is extremely unresponsive for up to 5 minutes - if I click on Firefox to start it, nothing appears to happen for a long time, etc, etc. The mouse and Windows UI is responsive, but programs take forever to start, webpages seem to hang (or at least load extremely slowly) and so on.  I imagine that the issue is with one or more programs that run on startup, but I don't know quite how to identify which one it might be. The event log shows nothing of any obvious interest. I can't see any high CPU activity in task manager or Process Explorer, and I can't hear any high disk activity.  I'd rather understand what's happening and then work out how to address it, than have to go for a blind "switch things off and see what helps" approach, but maybe that's being optimistic :-)  I suspect disk bottlenecks or network, but I don't know how I could set something up to diagnose this (and in particular, given that I can't get programs to start in a timely manner, I'd prefer something that automatically starts and logs data for later analysis than something like Process Explorer, which always leaves me worrying that by the time it started the problem had gone away :-)  I guess my ideal would be 2 things:   Something that gave me an overall "what are the current key bottlenecks in this system" summary (ideally, which could be set to run in the background and collect data for later analysis). Some means of starting a program (say, Firefox) and have it record what was going on in terms of waits and delays in the system.   Unfortunately, I've never really found anything like either of these.  I'm not a professional systems admin - my background is database admin - so if there are "obvious" tools to look at or try, then I'd be grateful to know of them (particularly if the information they give is easy for an amateur to analyze) :-)