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• Fan starts at startup (Macbook Pro 6,2)

  - by kalaracey

  I recently installed ubuntu 10.10 onto my Macbook Pro 6,2 unibody. I've got everything setup (not my first time), except on startup the fan goes crazy. I choose linux from rEFIt, and after GRUB the fan turns up to what I think is the highest speed. The computer definitely is not overheating. It doesn't do this when booting Mac OS X. Macbook Pro 6,2 Unibody (15") Ubuntu 10.10 kernel 2.6.35-28 generic Mactel PPA (pommed, etc.)

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• HP D530 Startup Error: 512 - Chassis Fan Not Detected

  - by lyrikles

  I'm using the HP D530 Motherboard/CPU that I installed in a new case with a 600W PSU. There was a problem with the onboard chassis fan connector (3-wire) not supplying sufficient power to the chassis fan indicated by the fan spinning very slowly, but I never experienced the "512 Error" at boot. Also, the same fan works perfectly connected directly to the PSU. I disconnected it since I already have plenty of fans connected via the PSU directly. Since then, on startup, I get the error: "512 - Chassis Fan Not Detected" and am asked to "Press F1 to continue". This gets quite annoying since I use this machine remotely (w/ FreeNAS). What could be causing the onboard fan connector to not be giving enough power? If this is unable to be corrected, how can I make the BIOS think there's a chassis fan plugged in without actually plugging a fan into the onboard connector? Would it be possible to jumper the pins without damaging the motherboard or PSU? Thanks,Erik

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• Is the exhaust fan necessary?

  - by Borek

  On my new PC, the component making the most noise is the rear exhaust fan on my case (it is the only exhaust fan in my PC). I tried to disconnect it and watched temperatures in SpeedFan and CPU was usually at about 35C, peaking to about 50C when the system was under load - this doesn't look too bad. So I'm considering that I'll leave the exhaust fan disconnected permanently after which the computer is very quiet - the only noise-making components are Arctic Cooling Freezer 7 Pro Rev.2 (CPU fan) and PSU fan (Enermax Pro 82+), both being quiet enough as far as I can tell. (My GPU has a passive cooler.) Also, those 2 components are moving parts so will provide some air flow in the case and, even better, PSU fan sucks the air out of the case so it kind of is an exhaust fan in itself. Does anyone run with the exhaust fan disconnected? You don't have to tell me that it's always better to have more air flow than less, I know that, but the noise is also a consideration for me and temperatures around 40C should be fine shouldn't they? (I might also consider getting a quieter case fan but I'm specifically interested in your opinion on the no exhaust fan scenario.)

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• NFS mount share from Linux AD authentication to Linux with NIS authentication

  - by user137862

  I have two machines: Linux with AD authentication and running NFS server Linux with NIS authentication Problem: When I try to mount any share from first machine (AD authentication) to second (NIS authentication) I always get somehing like this drwxrws---+ 13 16777260 16777222 4096 Sep 21 09:42 software In fact I can't access to this folder because on NIS machine I don't have the user with such UID/GID Question: May somebody know how resolve this problem?

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• How is the Linux repository administrated?

  - by David

  I am amazed by the Linux project and I would like to learn how they administrate the code, given the huge number of developers. I found the Linux repository on GitHub, but I do not understand how it is administrated. For example the following commit: https://github.com/torvalds/linux/commit/31fd84b95eb211d5db460a1dda85e004800a7b52 Notice the following part: So one authored and Torvalds committed. How is this possible. I thought that it was only possible to have either pull or pushing rights, but here it seems like there is an approval stage. I should mention that the specific problem I am trying to solve is that we use pull requests to our repo. The problem we are facing is that while a pull request is waiting to get merged, it is often broken by a commit. This leads to a seemingly never ending work to adapt the fork in order to make the pull request merge smoothly. Do Linux solve this by giving lots of people pushing rights (at least there are currently just three pull requests but hundreds of commits per day).

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• Dell xps 15z fan issue in ubuntu 12.04

  - by Paxinum

  I just updated to ubuntu 12.04 on my Dell laptop xps 15z. The trouble is that I hear a slight ticking sound every 3rd second, probably from a fan. This is a new issue in this ubuntu version. I use the recommended boot options for grub, i.e. acpi_backlight=vendor, but I do not use any acpi=off or acpi=noirq. Is there a way to fix this issue from ubuntu, by maybe controlling the fans somehow? EDIT: Notice, the sound goes away as the fan speeds up, (when doing calculations or such), so it is really a fan issue. EDIT2: I have located the issue: If I use conky 1.9, together with the command execpi for a python application, then the sound appears, and the noise syncs with the update interval for conky (NOT for the update interval for execpi!). The noise seems to be proportional to the complexity of the drawing that is needed. This is very strange, as this issue was not in the prev. version of conky I used. The solution was to increase the update interval for conky from 0.5 to 3, i.e. update every 3rd second instead of twice a second.

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• Migrating from IBM AIX/DB2 Power systems to Oracle Technologies

  - by zeynep.koch(at)oracle.com

  If you are planning to migrate from  IBM DB2 on AIX Power Systems to more open and better-performing computing environment--one that offers enhanced flexibility, clustering, availability, and security, as well as lower maintenance than download this guide that outlines migrating to Oracle Database 11g and Oracle Linux running on Oracle's Sun Fire X4800 server.This guide shows you how to:Move sample applications with an IBM DB2 on an IBM Power System to Oracle Database 11g Release 2Install Oracle Linux and Oracle Database Release 2 on the Oracle's Sun Fire X4800 serverMigrate user databases from the IBM Power System to Oracle's Sun Fire X4800 serverDownload

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• Fan always spinning on Maverick

  - by jb

  I use Dell Studio 1555, after update to maverick my fan started spinning full speed allways. I use xserver-xorg-video-ati/radeon drivers because fglrx messes with my desktop resolution when connecting external screen. Processor is mostly idle. U use some desktop effects. On the same configuration on Lucid my fan worked slower. It eats lots of battery time :( Bug filed: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/675156 Any insights how to solve/debug it or work around it?

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• Cannot control the fan on a Sony Vaio laptop

  - by Xobb

  I've got Sony Vaio laptop and my fan is on all the time, though the temperature on the video-adapter is always over 60°?. As I've googled, vaiofand does not support VPC-EA series. Is there anything I can do with that or I need another laptop? I'm using the following graphics card: 01:00.0 VGA compatible controller: ATI Technologies Inc Manhattan [Mobility Radeon HD 5000 Series] though the problem is not with the graphics card. I've mentioned its temperature as the highest (64°C now btw). Seems like the notebook is always overheated and I cannot control the fan speed to make it cooler. And yes, I'm using the proprietary driver ATI/AMD FGLRX graphics driver. I'm using Kubuntu 11.04.

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• Notebook MSI GT640 - noisy fan - Ubuntu 11.10 x64

  - by pablo

  I have all time this issue when using Ubuntus, the fan (fans?) runs most off the time and between 60%~100% even in idle which is weird. The GPU temperatures are mostly around 80 degrees and I don't think it's right :( I always use Jupiter with power saving preset and add the line in linux default like this: quiet splash pcie_aspm=force i915.i915_enable_rc6=1 So it helps a little (fan just doesn't run all the time 100%...) What else can I do? The notebook spec is: Core i7-720 (8 threads) NVIDIA GTS250M So it's rather one of the first, not so silent and cold notebooks;), with Core i7 family and without optimus technology (as nvidia GPU is the only graphic card built-in) but anyway I don't have theese strange hot times in Windows 7.

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• How to stop fan running always on Asus P8P76LE motherboard with ATI Radeon HD6900

  - by Chris Good

  I'm using Ubuntu 12.04 LTS. I'm not sure if it is the CPU (i7) fan or the video card fan. I've tried using lm-sensors & fancontrol sudo sensors-detect Now follows a summary of the probes I have just done. Just press ENTER to continue: Driver `w83627ehf': * ISA bus, address 0x290 Chip `Nuvoton NCT6776F Super IO Sensors' (confidence: 9) Driver `coretemp': * Chip `Intel digital thermal sensor' (confidence: 9) To load everything that is needed, add this to /etc/modules: # Chip drivers coretemp w83627ehf Like many people, I'm also getting error: /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed Here is the output of sensors: # sensors radeon-pci-0100 Adapter: PCI adapter temp1: +71.0°C coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +44.0°C (high = +80.0°C, crit = +98.0°C) Core 0: +44.0°C (high = +80.0°C, crit = +98.0°C) Core 1: +40.0°C (high = +80.0°C, crit = +98.0°C) Core 2: +43.0°C (high = +80.0°C, crit = +98.0°C) Core 3: +42.0°C (high = +80.0°C, crit = +98.0°C) I'm hoping some-one has already solved this for my configuration because this seems to be a problem for many people and there are many different suggestions.

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• Fan not detected by lm-sensors

  - by OrangeTux

  My fan is blowing hard, while my cpu temperature is 32 degrees I tried a lot of things to control my fan. Changed grub file GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi= pci=noacpi" _ GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=\"Linux\"" Ran sensors-detect : To load everything that is needed, add this to /etc/modules: #----cut here---- # Chip drivers coretemp #----cut here---- If you have some drivers built into your kernel, the list above will contain too many modules. Skip the appropriate ones! Do you want to add these lines automatically to /etc/modules? (yes/NO) Unloading i2c-dev... OK Unloading i2c-i801... OK Unloading cpuid... OK Ran sensors: acpitz-virtual-0 Adapter: Virtual device temp1: +34.0°C (crit = +90.0°C) coretemp-isa-0000 Adapter: ISA adapter Core 0: +34.0°C (high = +80.0°C, crit = +90.0°C) Core 2: +34.0°C (high = +80.0°C, crit = +90.0°C) Ran sudo start module-init-tools and sudo start module-init-tools module-init-tools stop/waiting As you can see my fan isn't detected. Running fancontrol gives me this: Loading configuration from /etc/fancontrol ... Error: Can't read configuration file Can you help me, please? I cannot use my laptop now in class. Thanks in advance. My system 00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02) 00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 02) 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) 00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06) 00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05) 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05) 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05) 00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 05) 00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5) 00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05) 01:00.0 VGA compatible controller: ATI Technologies Inc Manhattan [Mobility Radeon HD 5400 Series] 01:00.1 Audio device: ATI Technologies Inc Manhattan HDMI Audio [Mobility Radeon HD 5000 Series] 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02) 03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01) 7f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05) 7f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05) 7f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05) 7f:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05) 7f:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05) 7f:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)

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• How to stop fan running always on Asus P8P67LE motherboard with ATI Radeon HD6900

  - by Chris Good

  I'm using Ubuntu 12.04 LTS. I'm not sure if it is the CPU (i7) fan or the video card fan. I've tried using lm-sensors & fancontrol sudo sensors-detect Now follows a summary of the probes I have just done. Just press ENTER to continue: Driver `w83627ehf': * ISA bus, address 0x290 Chip `Nuvoton NCT6776F Super IO Sensors' (confidence: 9) Driver `coretemp': * Chip `Intel digital thermal sensor' (confidence: 9) To load everything that is needed, add this to /etc/modules: # Chip drivers coretemp w83627ehf Like many people, I'm also getting error: /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed Here is the output of sensors: # sensors radeon-pci-0100 Adapter: PCI adapter temp1: +71.0°C coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +44.0°C (high = +80.0°C, crit = +98.0°C) Core 0: +44.0°C (high = +80.0°C, crit = +98.0°C) Core 1: +40.0°C (high = +80.0°C, crit = +98.0°C) Core 2: +43.0°C (high = +80.0°C, crit = +98.0°C) Core 3: +42.0°C (high = +80.0°C, crit = +98.0°C) I'm hoping some-one has already solved this for my configuration because this seems to be a problem for many people and there are many different suggestions.

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• Fan speeds up and slows down annoyingly on a Dell Latitude 5520

  - by user38175

  I' ve just bought a dell latitude 5520 and installed 11.10, my trouble is that the fan is noisy which is not regular. It is quiet for 1 minute and then speeds up and slows down every 4 seconds for 1 minute : it's very annoying. I tried i8fan things on the Internet but i didn't solve my problem, it seems to work better in windows 7 but i don't use it a lot. Dell technician came and changed the motherboard and the fan but it's still the same. I have to put music on when i'm on my computer... Anyone have the same problem or a solution?

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• Fan very loud in Ubuntu 12.10

  - by Jon

  I recently installed 12.10 on my Desktop PC, moving away from Windows 7. For some reason, the fan in my computer is making an enormous amount of noise (it is running at full speed constantly). Under Windows 7, the fan would slow itself down and run at an acceptable noise level. Now, it is nearly unbearable. Checked the processes, and none are taking up a huge load on the CPU. Please help as I really can't endure this noise, and I do not want to go back to Windows 7 on this box. Some specs: - Intel 2.26 duo core - ATI 4870 - 4GB - 650W power supply

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• Serial connection over a single USB cable (Windows to linux, or linux to linux)

  - by andyortlieb

  I'm helping out with a project for an embedded device that only has USB and no serial. This device is running Linux. These days, when we need to connect to a serial port on a device we typically use a USB to serial adapter (on something like a phone system or a load balancing device, etc). I would like to know if it is possible to have the host device behave as though it were a serial adapter, thus removing the need for one. Given the nature of USB, is this approach even necessary? To recap, I would like to be able to connect a single A-to-A USB cable from my workstation (be it windows or linux) to this device, for the purpose of administration (especially initial setup), using minicom, putty or hyperterminal. Thanks

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• Follow ORCL_Linux on Twitter

  - by sergio.leunissen

  We've created the following Twitter handles for those of you who like your Oracle Linux and virtualization news in micro chunks ORCL_Linux ORCL_virtualize

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• Easy software installation on Linux(Ubuntu/ Linux mint)

  - by Aash Maharoon

  When a software is installed, it has to be done with the terminal and coding. There are some steps to do which can be difficult for a new user(comes from windows OS). In Windows OS, we can set paths for installation directory, uninstall easily and installation GUI application comes with the software which is very easy to do with using mouse only. I am new to Linux and love to use it. Is there any methodologies or softwares which can be very user friendly for application installation with GUI support ? or only the terminal should be used ?

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• What does the fan speed sensor really report?

  - by T. Verron

  I have an overheating issue on my netbook (ASUS EeePC 1015PW), which I'm trying to troubleshoot. Using lm-sensors while overheating gave me this output : acpitz-virtual-0 Adapter: Virtual device temp1: +86.0°C (crit = +100.0°C) eeepc-isa-0000 Adapter: ISA adapter fan1: 4089 RPM coretemp-isa-0000 Adapter: ISA adapter Core 0: +82.0°C (crit = +100.0°C) Core 1: +80.0°C (crit = +100.0°C) But I can't hear the fan. So I enabled manual pwm controling and set the fan to full speed, and after a few minutes I got this output : acpitz-virtual-0 Adapter: Virtual device temp1: +65.0°C (crit = +100.0°C) eeepc-isa-0000 Adapter: ISA adapter fan1: 4016 RPM coretemp-isa-0000 Adapter: ISA adapter Core 0: +62.0°C (crit = +100.0°C) Core 1: +58.0°C (crit = +100.0°C) And this time I could hear the fan spinning. So there's quite obviously an issue with either fan control or fan monitoring. Hence the question : what kind of physical information does the fan sensor really report? Thank you PS. I should have added that the computer is a small, hard-to-disassemble netbook, so I can't and don't want to try experiments like "block the fan and see what the sensor reports".

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• Trying to make a custom Arch-based Linux distro with larch

  - by strangeronyourtrain

  I'm all set up with a spiffy Arch installation in a virtual machine, and now I want to turn it into a live ISO. When I heard about larch, I thought it would be the perfect tool to turn my existing installation into something I could distribute. However, I can't get larch to install properly. I followed the installation instructions on the website, which said to download and run the larch-setup script. When I run it, though, it installs the larch profiles and libraries but doesn't install the executable programs. Here's a screenshot of the errors I get when larch-setup tries to install the executables. I'd greatly appreciate any clues to what is going wrong here, or suggestions for alternative ways to turn my customized Arch installation into an ISO! Thanks!

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• Ubuntu CPU Fan at 2200 RPM and CPU top at 90°C

  - by T-Erra

  I have a problem with my CPU heat. I'm running Ubuntu 14.04 (64bit) and I have issues with the cooling. I know it might be a hardware issue, but I've checked, the fan is running and in my GUI I use the command "sensors" which shows me a RPM of 2200 and a CPU temperature of 60°C while I'm not running any software. This seems to be really mysterious. However, if I start my IDE (Eclipse), Firefox and Chromium at the same time, the CPU temp goes up to 75-90° Celsius. I doubt that this is common for a system with 16 GB RAM, an i7 Processor and an Intel water cooling system and I also never had some issues like this before when I was running Ubuntu 12.04 or 13.04. Fan Speed At 60°C it's at 1300 RPM, and after start up Eclipse and Firefox it's at approximately 2200 RPM and between 75°C - 90°C depending on how many windows and IDE's I've opened. If I use the "top" command, there are just few processes like Xorg or Compiz which are taking up to 10% CPU usage at maximum, during the time I'm not running any software. I have tried to upgrade the Linux kernel, where I failed. After upgrading, I wasn't able to boot anymore so I tried to remove the new kernel from the boot directory and updated my grub file to an old entry, which works fine now, but still with the temperature issue. My NVIDIA drivers is also up to date, which dropped some issues I had before with the CPU load. So it can't be a problem with the graphic card. How can I find out, where the problem is, or why my CPU gets that high temperatures, which I only should get while playing games with high end graphics and so on? Did anyone have some similar issues before?

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• Intel graphics driver installer, now the CPU fan is rarely quiet

  - by Space monkey

  I have an Optimus chipset: Intel HD 4000 (i7-3635QM CPU) Geforce 640m I don't care about the NVIDIA card, so I didn't try to install any proprietary drivers for it. So: I was having a choppy+high CPU experience with gnome-shell on Ubuntu 14.04. Only happened when I tried moving a window around quickly. I used the Intel graphics installer hoping that it will fix the problem. It did fix the problem, now there is no choppyness or high CPU when I move windows around. However, there is a new problem now: The fan is rarely quiet, doing barely anything at all will cause the fan to go into loud mode quickly. That happens despite the CPU usage being at just around 4%. This wasn't the case before installing Intel drivers. It would normally only do that if, for example, I'm installing packages or doing something that puts some stress on the CPU. I set all CPU cores to "powersave" using cpufreq-set, but nothing changed. Also on Windows, the fans are really quiet when I'm in powersave mode. I believe they completely shut off for most of the time. I remember the installer giving me a report at the end as to which packages it installed. Unfortunately, I didn't save the report and I don't know where it would have saved it if it did. Any ideas or similar experiences?

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• Oracle Database Smart Flash Cache: Only on Oracle Linux and Oracle Solaris

  - by sergio.leunissen

  Oracle Database Smart Flash Cache is a feature that was first introduced with Oracle Database 11g Release 2. Only available on Oracle Linux and Oracle Solaris, this feature increases the size of the database buffer cache without having to add RAM to the system. In effect, it acts as a second level cache on flash memory and will especially benefit read-intensive database applications. The Oracle Database Smart Flash Cache white paper concludes: Available at no additional cost, Database Smart Flash Cache on Oracle Solaris and Oracle Linux has the potential to offer considerable benefit to users of Oracle Database 11g Release 2 with disk-bound read-mostly or read-only workloads, through the simple addition of flash storage such as the Sun Storage F5100 Flash Array or the Sun Flash Accelerator F20 PCIe Card. Read the white paper.

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• The Best Free Tools for Creating a Bootable Windows or Linux USB Drive

  - by Lori Kaufman

  If you need to install Windows or Linux and you don’t have access to a CD/DVD drive, a bootable USB drive is the solution. You can boot to the USB drive, using it to run the OS setup program, just like a CD or DVD. We have collected some links to free programs that allow you to easily setup a USB drive to install Windows or Linux on a computer. NOTE: If you have problems getting the BIOS on your computer to let you boot from a USB drive, see our article about booting from a USB drive even if your BIOS won’t let you. What Is the Purpose of the “Do Not Cover This Hole” Hole on Hard Drives? How To Log Into The Desktop, Add a Start Menu, and Disable Hot Corners in Windows 8 HTG Explains: Why You Shouldn’t Use a Task Killer On Android

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• Racing MMO for Linux - 2D or 3D - Massively Multiplayer Online Racing Games for Linux

  - by Paulocoghi

  I really like multiplayer racing games, like Need for Speed World or similar. I wonder if there is any MMO racing game for Linux (2D or 3D). Browser-based games are also accepted. Note: I tried this question in the Gaming Q&A of StackExchange (see link below), but one user said that my question was off-topic. http://gaming.stackexchange.com/questions/16329/racing-mmo-for-linux-2d-or-3d-massively-multiplayer-online-racing-games

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