Search Results

Search found 9611 results on 385 pages for 'low power'.

Page 206/385 | < Previous Page | 202 203 204 205 206 207 208 209 210 211 212 213  | Next Page >

  • Setting up autotest with rspec in ubuntu

    - by Reactor5
    I'm trying to set up autotest on Ubuntu, and no matter what my configuration, I get this: loading autotest/rails_rspec2 style: RailsRspec2 /home/brian/.rvm/gems/ruby-1.9.2-rc2@rails3tutorial/gems/redgreen-1.2.2/lib/redgreen/autotest.rb:6:in `<top (required)>': uninitialized constant Object::PLATFORM (NameError) the .autotest (~/.autotest) file I have is as follows: #!/usr/bin/env ruby require 'redgreen/autotest' def self.notify title, msg, img, pri='low', time=3000 `notify-send -i #{img} -u #{pri} -t #{time} '#{msg}'` end Autotest.add_hook :ran_command do |at| results = [at.results].flatten.join("\n") output = results.slice(/(\d+)\s+examples?,\s*(\d+)\s+failures?(,\s*(\d+)\s+not implemented)?(,\s*(\d+)\s+pending)?/) folder = "~/Pictures/autotest/" if output =~ /([123456789]|[\d]{2,})\sfailures?/ notify "FAIL:", "#{output}", folder+"rails_fail.png", 'critical', 10000 elsif output =~ /[1-9]\d*\spending?/ notify "PENDING:", "#{output}", folder+"rails_pending.png", 'normal', 10000 else notify "PASS:", "#{output}", folder+"rails_ok.png" end end what am I doing wrong here?

    Read the article

  • iPhone dev - viewDidUnload subviews

    - by Mk12
    I'm having a hard time undestand a couple of the methods in UIViewController, but first I'll say what I think they are meant for (ignoring interface builder because I'm not using it): -init: initialize non view-related stuff that won't need to be released in low memory situations (i.e. not objects or objects that can't be recreated easily). -loadView: create the view set the [self view] property. -viewDidLoad: Create all the other view elements -viewDidUnload: Release objects created in -viewDidLoad. didReceiveMemoryWarning: Low-memory situation, release unnecessary things such as cached data, if this view doesn't have a superview then the [super didReceiveMemoryWarning] will go on to release (unload) the view and call -viewDidUnload. -dealloc: release everything -viewWillAppear:, -viewDidAppear:, -viewWillDisappear:, -viewDidDisappear: self-explanatory, not necessary unless you want to respond (do something) to those events. I'm not sure about a couple of things. First, the Apple docs say that when -viewDidUnload is called, the view has already been released and set to nil. Will -loadView get called again to recreate the view later on? There's a few things I created in -viewDidLoad that I didn't make a ivar/property for because there is no need and it will be retained by the view (because they are subviews of it). So when the view is released, it will release those too, right? When the view is released, will it release all its subviews? Because all the objects I created in -viewDidLoad are subviews of [self view]. So if they already get released why release them again in -viewDidUnload? I can understand data that is necessary when the view is visible being loaded and unloaded in these methods, but like I asked, why release the subviews if they already get released? EDIT: After reading other questions, I think I might have got it (my 2nd question). In the situation where I just use a local variable, alloc it, make it a subview and release, it will have a retain count of 1 (from adding it as a subview), so when the view is released it is too. Now for the view elements with ivars pointing to them, I wasn't using properties because no outside class would need to access them. But now I think that that's wrong, because in this situation: // MyViewController.h @interface MyViewController : UIViewController { UILabel *myLabel; } // MyViewController.m . . . - (void)viewDidLoad { myLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 40, 10)]; [myLabel setText:@"Foobar"]; [[self view] addSubview:myLabel]; } - (void)viewDidUnload [ // equivalent of [self setMyLabel:nil]; without properties [myLabel release]; myLabel = nil; } In that situation, the label will be sent the -release message after it was deallocated because the ivar didn't retain it (because it wasn't a property). But with a property the retain count would be two: the view retaining it and the property. So then in -viewDidUnload it will get deallocated. So its best to just always use properties for these things, am I right? Or not? EDIT: I read somewhere that -viewDidLoad and -viewDidUnload are only for use with Interface Builder, that if you are doing everything programmatically you shouldn't use them. Is that right? Why?

    Read the article

  • Use QuickCheck by generating primes

    - by Dan
    Background For fun, I'm trying to write a property for quick-check that can test the basic idea behind cryptography with RSA. Choose two distinct primes, p and q. Let N = p*q e is some number relatively prime to (p-1)(q-1) (in practice, e is usually 3 for fast encoding) d is the modular inverse of e modulo (p-1)(q-1) For all x such that 1 < x < N, it is always true that (x^e)^d = x modulo N In other words, x is the "message", raising it to the eth power mod N is the act of "encoding" the message, and raising the encoded message to the dth power mod N is the act of "decoding" it. (The property is also trivially true for x = 1, a case which is its own encryption) Code Here are the methods I have coded up so far: import Test.QuickCheck -- modular exponentiation modExp :: Integral a => a -> a -> a -> a modExp y z n = modExp' (y `mod` n) z `mod` n where modExp' y z | z == 0 = 1 | even z = modExp (y*y) (z `div` 2) n | odd z = (modExp (y*y) (z `div` 2) n) * y -- relatively prime rPrime :: Integral a => a -> a -> Bool rPrime a b = gcd a b == 1 -- multiplicative inverse (modular) mInverse :: Integral a => a -> a -> a mInverse 1 _ = 1 mInverse x y = (n * y + 1) `div` x where n = x - mInverse (y `mod` x) x -- just a quick way to test for primality n `divides` x = x `mod` n == 0 primes = 2:filter isPrime [3..] isPrime x = null . filter (`divides` x) $ takeWhile (\y -> y*y <= x) primes -- the property prop_rsa (p,q,x) = isPrime p && isPrime q && p /= q && x > 1 && x < n && rPrime e t ==> x == (x `powModN` e) `powModN` d where e = 3 n = p*q t = (p-1)*(q-1) d = mInverse e t a `powModN` b = modExp a b n (Thanks, google and random blog, for the implementation of modular multiplicative inverse) Question The problem should be obvious: there are way too many conditions on the property to make it at all usable. Trying to invoke quickCheck prop_rsa in ghci made my terminal hang. So I've poked around the QuickCheck manual a bit, and it says: Properties may take the form forAll <generator> $ \<pattern> -> <property> How do I make a <generator> for prime numbers? Or with the other constraints, so that quickCheck doesn't have to sift through a bunch of failed conditions? Any other general advice (especially regarding QuickCheck) is welcome.

    Read the article

  • bluetooth doesn't turn off during sleep in Windows 7

    - by lajos
    I have a Bluetooth USB dongle on a Windows 7 laptop. I did not install any Bluetooth drivers, so I assume that the device is using the Microsoft stack. When the computer goes to sleep, the Bluetooth adapter stays on. I don't want Bluetooth devices to wake the computer, so I want sleep to turn off the dongle, but I can't find power management options for Bluetooth in the Control Panel and Device Manager. I also have an issue where the computer doesn't reach full sleep mode, I'm hoping that turning Bluetooth off will solve that problem, too. How can I turn off Bluetooth during sleep?

    Read the article

  • HP Server bios boot delay

    - by jjrab
    I'm just going to throw this out there in case anyone else has run accross this... I have an HP DL320 G5p that had the motherboard replaced due to a faulty NIC port. After several calls to HP, two motherboard replacements, PCI riser card replacements, Processor replacement, and power supply replacement, the server takes approx. 10 minutes before it boots into the BIOS. It then boots up with no issues. We've run the HP smart start cd and performed the system tests and everything passed. All firmware has also been upgraded to the latest as well. Has anyone else seen this and found a fix? I am still working with HP, but there seems to be a struggle on their part to figure this out, so I'm curious to know if anyone else has experienced this and found a fix - thanks...

    Read the article

  • Keyboard / mouse freeze

    - by ajvb
    Hello, Pretty much on a daily basis the keyboard & mouse on my Dell PC stop responding. I have left the PC on for over 10 minutes but still no response so I have to power on / off. Keyboard / mouse then work fine. I did have 2 mice attached to the PC but I have now removed one to see if this makes any difference. CPU temperatures are 51C & 48C - dont know whether this is normal or high? OS is Windows 7. Adrian

    Read the article

  • Chatbox/shoutbox/forum with the following features.

    - by Mick
    I would like to set up a simple forum for a small number of users. The features I would like are the following, in order of priority: logging on not compulsory for posting. A single thread. All the messages are immediately visible - no need to "open" them. most recent message at the top by default. The ability to give selected users the power to delete spam messages. The ability to upload photos. Avatars. Configurable skins/size/shape. So far the closest I have come is www.tag-world.com but there are no avatars and no photos.

    Read the article

  • 1000 HZ linux kernel necessary if I have tickless and high resolution timer?

    - by Bob
    I am trying to improve performance on my server. I have a few processes that need low jitter (less than 10ms variance). I have a load average of 4 maximum on an i7-920 (4 physical cores, 8 with HT). There are about 10 processes ranging from 40% to 90% of a core user mode. System usage is 3% total. Total CPU usage is 80% max. Will setting the kernel from 100hz to 1000hz improve the jitter if tickless and high resolution timers are already set? This page seems to indicate it still does something. https://lkml.org/lkml/2009/4/28/401 How about changing from voluntary (PREEMPT_VOLUNTARY) to preemptible (PREEMPT)?

    Read the article

  • Any ideas for automatic initial/scripted configuration of a NetApp?

    - by maddenca
    The background is to make a solution where we can automate as much as possible the building up of ‘pods’ that include server/network/storage and that will be built at remote sites. In an ideal world would be that we create a single management server which is preconfigured with DHCP/TFTP/or whatever. This management server is racked with a CISCO UCS, FAS31x0, etc. at a build site and is then transported to the final customer site where on power it almost configures itself, or at least bootstraps itself far enough that a remote skilled 'expert' can complete the setup of the pod. Ideas (doesn't have to resemble 100% of the above) would be helpful.

    Read the article

  • Error starting Hyper-V VM

    - by Peter Bernier
    I'm trying to start a VM on a new Hyper-V installation and I'm receiving the following error: The virtual machine could not be started because the hypervisor is not running. The following actions may help you resolve the problem: 1) Verify that the processor of the physical computer has a supported version of hardware-assisted virtualization. 2) Verify that hardware-assisted virtualization and hardware-assisted data execution protection are enabled in the BIOS of the physical computer. (If you edit the BIOS to enable either setting, you must turn off the power to the physical computer and then turn it back on. Resetting the physical computer is not sufficient.) 3) If you have made changes to the Boot Configuration Data store, review these changes to ensure that the hypervisor is configured to launch automatically. My machine supports virtualization at the hardware level and it is enabled in BIOS. Why am I receiving this error?

    Read the article

  • MacBook Pro - 72k vs 54k rpm drives - Heat and Noise

    - by webworm
    I am looking at a new 15" MacBook Pro for development purposes. I am planning to run a Virtual Machine for about 50% of my work (Windows 7 x64, IIS, SQL Server, and VS 2010). The upgrade from a 54000 rpm drive to a 72000 rpm is only $45. From what I understand the faster rotational speed of the 72000 rpm drive will help virtual machine performance. However, I am concerned that additional heat and fan noise might be an issue. I will be running mostly on A/C power so decreased battery life is not a major concern for me. Since I would be running with a Core i7 processor which gives off a fair amount of heat already I was wondering if it might be best to stay at 54000 rpm for the hard drive. What do you all think? Thanks!

    Read the article

  • How can I dual install Ubuntu 10.4 in a Mac Mini with 10.4.11?

    - by Marco Mariani
    I'd like to power-up my aging Mac Mini (1.5GHz Core Solo, 1GB RAM, Tiger 10.4.11) by installing a shiny Ubuntu alongside the current OS. After all, I use Ubuntu for everything save for cleaning my teeth. Since it's my first and only Mac and I have next to no experience with the OS (having used it basically as a media player) I am a little concerned about rEFIt, ELILO, Boot Camp and the fact that it's basically a 4.5 years old unsupported machine and I might get asleep reinstalling everything several times. I've used the live desktop-i386 CD and everything works. I tried with an external USB drive instead of a CD but couldn't make it boot. As for installing Ubuntu, the howtos I've found give several alternatives depending on the model, the OSX version, etc.. but they usually talk about newer machines. Which howto should I follow to repartition, and boot thereafter? Thanks

    Read the article

  • new SBS 2011 Standard problems

    - by Damon
    Brand new SBS 2011 install. I went to remove the DHCP server role. It went into a "Preparing to configure Windows. Do not turn off your computer." Been there for hours. Finally, decided to power off and restart. After boot up, the same window and message appear and it just sits there spinning. "Preparing to configure Windows. Do not turn off your computer." I'd love to get this installed before the end of the day but it doesn't look like that's possible. Any ideas on how to get passed this?

    Read the article

  • Installing List Compenent on Sharepoint Server

    - by Tom
    I added the Sharepoint site to the 'Document Management' section in CRM with the List Components checked and it added it with no problem. Also when I navigate to the 'Documents' section under an account it shows up with the format of the List components. However, if i click on 'New' or 'Actions' I get the following error message: An Error has occured in the script on this page. Error: Access is denied URL: https://*serveraddress*/crmgrid/scripts/crmmenu.htc Do you want to continue running scripts on this page? I have ran the power script which added the MIME .htc extention to IIS. Does anyone know what might be wrong?

    Read the article

  • MacBook: Can't boot into Linux partition after installation.

    - by Otto
    Hello I just installed Ubuntu. I created a partition in MacOSx using Disk utility, then deleted the partition and installed Ubuntu on the free space created. After the installation, Ubuntu said it would reboot. I hang on shutdown (which is normal, as google told me), so I used the power button to turn the MacBook off. Now I want to boot into Ubuntu. Pressing option/alt on startup only shows me the MacOSx and Windows partition. Also, the Linux partition isn't showing up on my MacOSx desktop. And in Disk Utility, I can see 3 grayed out partitions: "disk0s4", "disk0s5" and "Linux Swap". What can I do to boot into Ubuntu without losing my other partitions? Thank you for your help.

    Read the article

  • CCD vs. CMOS webcams

    - by rob
    Several years ago, I tried a CMOS-based webcam and it really sucked. It needed an extremely brightly-lit room to work. Around the same time, I also tried a CCD camera and it worked great. But since then, I've heard that CMOS technology has advanced considerably. Is it still the case that CCD webcams will give you a better picture, or can CMOS webcams also produce a picture of similar quality at moderate to low light levels? What type of camera is used in modern integrated webcams and cameras? If CMOS cameras actually are competitive these days, how do you tell if a webcam has a newer-generation CMOS sensor instead of one of the older sensors?

    Read the article

  • AMD Phenom II X4 965 crossfire motherboard

    - by Nick
    I am trying to build a cheap mining rig. I wanted to use the AMD Phenom II X4 965 (HDZ965FBGMBOX) processor as it got very good reviews and benchmarks, and is inexpensive. However, I am having trouble finding motherboards with crossfire support for 2 GPUs. AMD's website only lists five compatible motherboards, of which only one has crossfire support. Worse, it is expensive and seems to be obsolete and no longer available. I have trouble believing that there are only five compatible motherboards for that CPU. Are there any low-end motherboards that are both compatible with the AMD Phenom II X4 965 and have CrossFire support? (Is there a way to find this sort of information, like a central site that lists motherboards and their technical specifications?)

    Read the article

  • How can you control the speed of fan that comes with the Antec Sonata III case from the outside?

    - by Emil Lerch
    The Antec Sonata III case comes with a nice 120mm fan that has a 3 speed switch. Most of the time the fan is fine on low, but for games or other taxing workloads I need to switch it to medium or high. Opening the case every time I want to change the setting is kind of a pain. Has anyone figured out a way to control the speed from the outside of the case without going nuclear (e.g. cutting holes in the case)? Other than this annoyance I like the case and the fan that comes with it.

    Read the article

  • CentOS: update a package from a repository safely on a production server

    - by dan
    Hello everybody. I have a CentOS server on a production environment. I need to update the PHP package that I installed using the REMI repository. Quite easy: yum update php But what is it going to happen if something goes wrong during the update? How can I rollback? What's the best technique to make sure not to compromise a production server due to an update? Is it maybe better to compile PHP from the source, rather than using a binary package? EDIT: I am not afraid of incompatibility between my code and the new PHP version (I have well tested that on development). I am more afraid of something going wrong while CentOS updated the binary (power cut, lost connection, unexpected conflit) Thanks, Dan

    Read the article

  • LCD problems: brightness / contrast blown out, can't bring up menu

    - by davr
    Yesterday, when I turned on my LCD monitor, the colors were very very bright. It looks as if someone had gone into the monitor on-screen-display and turned up brightness & contrast all the way to the max. Colors were washed out, and it's almost painful to look at. So I tried to go into the menu and see if the settings were wrong somehow...and I found that I cannot bring up the menu. All the buttons on the front of the monitor now do nothing, except the power button. I was able to go into my graphics card settings, and turn the brightness way down to compensate, so it's at least usable for now, but it's not quite right, there is definitely some loss of color resolution or something from the two extreme settings canceling each other out. Any ideas what kind of failure in the LCD might cause this? According to the control panel, the model number is: KL2490DW-D It's a 24" 1920x1200 with the brand "synaps".

    Read the article

  • Windows 7 resizes desktop when I switch of a monitor

    - by Stijn Sanders
    I have a workstation with two monitors and the desktop extended over them. I have a lot of applications open (generally maximized), and I have a personal preference which application is on which monitor (let's say editors on the right, data retrieval and display on the left). I have recently upgraded to a workstation with Windows 7 and when I power off a monitor (typically when going home at the end of the day), the desktop-expand-over-monitors disables and all applications are switched to the main monitor. (Also the taskbar I keep on the left resizes to about one icon's width.) This is highly annoying, since I now spend the first minutes of work each day switching the applications back that were on the monitor on the right. Is there a way to prevent this? (It says no here.) Is there software I could install that can prevent this?

    Read the article

  • Re-assembling the RAID-5 array reboots my CentOS-5 machine

    - by xraminx
    I have 3 HDD's, each divided into 3 partitions. I had created a RAID-1 for boot partition md0 created from sda0, sdb0 and had also created two RAID-5 arrays: md1 created from sda1, sdb1, sdc1 md2 created from sda2, sdb2, sdc2 It used to work fine but one day I had to power off the machine (cold reboot) to get any response from the machine. After that, when the system started booting, it tried for a while to reconstruct the RAID arrays but after a few minutes it crashed silently. I booted the system in linux rescue mode from the DVD and tried to re-assemble the RAID devices manually. I was able to re-assemble md0 and md1 using: mdadm --assemble --scan /dev/md0 mdadm --assemble --scan /dev/md1 But when I try to re-assemble md2 using: mdadm --assemble --scan /dev/md2 the system reboots silently again. How can I fix this problem?

    Read the article

  • Intel Server Board S3420GP fails to boot with video connected

    - by Riley
    All, Building a new system using an Intel Server Board S3420GP motherboard and an Intel Xeon X3440 processor. Before installing this motherboard into the chassis we want to test that it will actually boot correctly. We have mounted the processor and RAM with no hard drives attached. The boot sequence differs between the next variable: 1) Connecting video results in the system fans ramp up and down, twice, and then the system beeps with the same behavior repeating; the system status light shows "Amber" 2) With no video, the system goes through POST and the diag LEDs show that the system is missing a bootable device Need some assistance identifying why the board would fail to POST with video connected. // Update // Using another Power Supply the system gets passed the fans ramping up and down twice. Video still does not display.

    Read the article

  • NVRAM for journals on Linux?

    - by symcbean
    I've been thinking about ways of speeding up disk I/O, and one of the bottlenecks I keep coming back to is the journal. There's an obvious benefit to using an SSD for the journal - over and above just write caching unless of course I just disable the journal with the write cache (after all devicemapper doesn't seem to support barriers). In order to get the benefits from using a BB write cache on the controller, then I'd need to disable journalling - but then the OS should try to fsck the system after an outage. Of course if the OS knows what's in the batter-backed memory then it could use it as the journal - but that means it must be exposed as a block device and only be under the control of the operating system. However I've not been able to find a suitable low-cost device (no, write-levelling for Flash is not adequate for a journal, at least one which uses Smartmedia). While there's no end of flash devices, disk/array controllers with BB write caches, so far I've not found anything which just gives me non-volatile memory addressable as a block storage device.

    Read the article

  • windows vms unpredictibly require login

    - by marrrkus
    I have a cluster of vms on a number of cloned servers using libvirt/qemu. Occassionally the windows 7 vms randomly require a login screen, even though I've done everything I can think of and can google to turn off a login screen. I've used netplwiz to turn off requiring a password (http://pcsupport.about.com/od/windows7/ht/auto-logon-windows-7.htm) manually changed the regsistry using the instructions here: http://superuser.com/a/28654 changed requiring a password in the power saving settings in the control panel if the screen goes to sleep told the screen to never go to sleep (in the control panel) Even with all of these things, some of the vms *still* randomly require a login. I have no idea what else to try. Any ideas??

    Read the article

< Previous Page | 202 203 204 205 206 207 208 209 210 211 212 213  | Next Page >