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  • COMPAQ Tower No Signal to monitor

    - by Lancelot
    Hi there, I have had some troubles with this: I received a compaq tower: Compaq Presario SR1224NX Onboard VGA Windows XP SP2 from a friend. It was given to me on condition i give her the files back. My plan was to turn this into an Ubuntu Server. It booted up no problems even with the ubuntu live disc. After a normal shutdown(not unpluggin the power cord and not doing a hard shutdown with the power button), it would not restart even after SEVERAL attempts. I realized the light next to the power supply would flash very rapidly. I researched and found out it was one of two things: a dead power supply or the cables to the motherboard and to the disks etc. Thus i checked to ensure the cables were fine(and they were). I purchased a Power Supply (this one has 400 watts, the initial had 250) and installed it. The tower now boots. It booted into the live disk and everything. After a normal shutdown, it now restarts but is not sending signal to my monitor. I have tried several monitors in which i assure work perfectly but not with this tower(i recall it did show display after replacing the power supply). The monitors are ACER. This is different than most "no Signal" problems since i am not using an external Video Card, this is onboard VGA. Thanks!

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  • COMPAQ Tower No Signal to monitor

    - by Lancelot
    I received a Compaq tower: Compaq Presario SR1224NX Onboard VGA Windows XP SP2 from a friend. My plan was to turn this into an Ubuntu Server. It booted up with no problems even with the Ubuntu live disc. After a normal shutdown (not unplugging the power cord and not doing a hard shutdown with the power button), it would not restart even after SEVERAL attempts. I realized the light next to the power supply would flash very rapidly. I researched and found out it was one of two things: a dead power supply or the cables to the motherboard and to the disks might be faulty, etc. Thus, I checked to ensure the cables were fine(and they were). I purchased a Power Supply (this one has 400 watts, the initial had 250) and installed it. The tower was able to boot into the live disk and everything. After a normal shutdown, it now restarts but is not sending signal to my monitor. I have tried several monitors in which I know work perfectly but not with this tower (I recall that it did show display after replacing the power supply). The monitors are ACER. This is different than most "no Signal" problems since I am not using an external Video Card, this is onboard VGA.

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  • Computer wont start, just blinks on and off

    - by Ryan
    This is really strange. I had a comp that was working fine for over a year, then suddenly it started to shut off, it got so bad that I press the power button and in around 30 secs while booting windows it would shut off, then 20 secs... then 10 secs, then it refused to start all together. So I bought a new PSU (850w Thermaltake, the old one was 550w corsair) thinking that was the problem, I fitted the new PSU now and its the same thing, I press the power button and my fans start for a split second (they have led lights on them, so the lights come on) and then everything goes off again. I thought maybe it was my power button that was loose on my comp, luckily I had another chassis near by so I disconnected the powerSW from the old one and put ran the powerSW from the new chassis, press the power on the new chassis and same thing, it blinks for a split second and off again. Double checked connections from the PSU to the cpu power as well as board mobo power, its tight. It's pretty unlikely both the PSUs have the same exact problem so am lost... Suggestions?

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  • GRUB 2 freezing at OS selection screen, what could be the cause?

    - by Michael Kjörling
    Mains power is somewhat unreliable where I live, so every now and then, the computer gets rebooted when the PSU can't maintain proper voltage during a brown-out or momentary black-out. It's happened a few times recently that when power is restored, the BIOS POST completes successfully, GRUB starts to load and then freezes. I've seen this at the Welcome to GRUB! message, but it seems to happen more often just past the switch to the graphical OS list. At this point, the computer will not respond to anything (arrow keys, control commands, Ctrl+Alt+Del, ...) - it simply sits there displaying this image, seemingly doing nothing more. At that point, turning the computer off using the power button and letting it sit for a while (cooling down?) has allowed it to boot successfully. Turning the computer off and immediately back on seems to give the same result (successful POST then freeze in GRUB). This behavior began recently, although does not seem to be directly correlated with my hard disk woes (although it may be relevant that GRUB resides on that physical disk, I don't know). Once the computer has booted, it runs without a hitch. I know that a "proper" solution would be to invest in a UPS, but what might be causing behavior like this? I was thinking in terms of perhaps the CPU shutting down as a thermal control measure, but if that was the cause then wouldn't I see similar freezes during use (which I do not)? What else could cause freezes apparently closely but not perfectly related to the BIOS handover from POST to OS bootloader? The BIOS settings are to reset to previous power status after a power loss. Since the PC in question is almost always turned on, this means restore to full power status. I have no expansion cards installed that make any BIOS extensions known by screen output during the boot process, at least, but I do have a few expansion cards installed. Haven't made any changes in that regard in a long time, now. I haven't touched GRUB itself for a long time, whether configuration or binaries, so I don't think that's the problem. Also, it doesn't really make sense that a bug in GRUB would manifest itself only once in a blue moon but significantly more often after a power failure.

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  • Why is Flash power-hungry?

    - by Doug
    Apple historically argued that Flash was power-hungry, which made it inappropriate for use on mobile devices. I always thought that was just bluster excusing Apple's exclusion of Flash support from their mobile devices. But now I see that Adobe acknowledges that Flash is a pig. Why is it a pig? Are there bad programming approaches (that can be explained in layman's terms) that make it so power-hungry?

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  • Screen is greyed out after power failure shutdown: Mac OSX

    - by Don MacLachlan
    When the battery power is down and the unit not plugged in the computer is forced into a sleep mode requiring pushing the start button when power is re-connected. The initial desktop screen appears to be greyed out and is unresponsive with a timer bar which, when the timing sequence is complete restores an active desktop. I can't find any reference to this phenomenon in the OSX literature I have. Any pointers to where I can get more information? Perhaps I am using the wrong search criteria?

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  • Printing to Power point

    - by manojpcw
    Hi, Similar to the print to pdf option, where we can choose PDF to be the output format in the print dialog box when printing something from a browser or other applications, I am searching for something which can print to a Power Point file. Is there any such plugin or tool? Also link to a relilable print to pdf tool would be helpful. This essentially would eliminate the export to power point option that the users are asking for in my Silverlight application. Thanks...

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  • Journaled filesystems and power failure

    - by Yoga
    I heard that even a journaled filesystems such as EXT3/EXT4 might corrupted during power failure, e.g. from wikipedia [1]: In the event of a system crash or power failure, such file systems are quicker to bring back online and less likely to become corrupted. Can anyone provide more detail by giving examples such that when corruption can occur corruption is avoided by journaled filesystems [1] http://en.wikipedia.org/wiki/Journaling_file_system

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  • Good locations worldwide for a coder gypsy wannabe

    - by fung
    Yes, this is not programming related but please bear with me =). I run a small niche SaaS business. Lately I've been thinking of traveling and experiencing life in other places. Would really appreciate suggestions for good places a developer could relocate to. In particular I'm looking for a place that: Has good internet connection (cheap stable broadband, lots of places that provide free wifi, etc.) Low cost of living (rent and food fairly cheap). At least half of the population speak English. Has a local courier agent (DHL, Fedex, any...). The government allows for extended stay of foreigners. I'm thinking of staying for about 6 months at each location and maybe doing it for 3 years. So looking for 5 to 6 locations in total. So if any of you think you're staying in a place that would be great for a visiting developer then please shout out. Include as detailed a description as possible. And include any cons about the place if there are. The only place that pops to mind right now is Bali =). Isle of Skye also seems interesting but I think immigration is tight and cost of living would definitely be higher. Thanks in advance for suggestions =)

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  • Improving as a coder with respect to design.

    - by dmarakaki
    As a soon-to-be computer science graduate, I have to come realization that I have a long way to go when it comes to the overall design of an application. After spending many semesters of programming from the hip I have come to appreciate the mulling over the needs of an application before diving head first into the coding portion. My question is to the intermediate and expert programmers, how can I improve in the area of the design phase of development?

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  • Key Coder/Observer example for Iphone

    - by ReduxDJ
    I'm trying to implement KVO into an application, yet, I've followed the documentation provided by Apple, however I can't get it to work. I'm hoping to see a bare minimal example of how to use this with my NSObjects. My use case, is I want one item in a table-cell to update without loading the entire data in a tableView because I am loading images from URLs and I don't want to reload all of the image, while I am polling a server. Thanks,

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  • UPS power requirements for server

    - by captainentropy
    Greetings! So, I just placed an order for a new server. The company recommended that I get a 3000W UPS. (!) As best as I could I calculated the following wattage consumption based on benchmarked data or datasheets provided by the manufacturers of each component: number watts **total watts** MoBo 1 240 240 CPUs (E5540) 2 80 160 RAID cards (3ware) 2 18 36 RAM (6x4GB) 6 3 18 DVD drive 1 7 7 floppy 1 2 2 RE4 drives 8 7 56 WD20 drives 8 6 48 Intel X25 SSD 2 0.15 0.3 total = 567 So that is for the PSU requirements only. The PSUs in the machine are a 720W for the master node and 800W each for two subsystems. That's a total of 2320W that can be delivered by these PSUs. But that is 4X the amount being consumed, at most, by the components. I didn't count case fans or the eSATA card (3W maybe?) or what the PSUs themselves require but assuming I double or triple my calculations I'm not even remotely close to the 3000W UPS I was suggested to get. They run at least $1100. I could get a 2000W for about $750 or a 1500W for $450 and still be well over my estimated power need. I don't think I need a whole lot of run time in the case of a power outage, maybe 20 minutes max, enough time to shutdown if the power doesn't come on within 5-10 minutes. Any thoughts? Am I off on my calculations? Did I overlook something major? If so what are your suggestions for a UPS? Thanks!

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  • How to turn off screen (DPMS) together with locking session in KDE?

    - by gertvdijk
    First of all, I'm aware a similar question for GNOME is asked here: "Switch off laptop backlight when locking screen". Objective I would like to turn off my screen on locking the session for power saving reasons. Actual problem Locking the screen on Kubuntu (KDE) inevitably triggers the screensaver as far as I can see. There's no screensaver option other than 'Blank screen' together with its background colour set to black that comes just close to my goal. It blanks the screen, but doesn't turn off the screen. Screen's backlight will still be on and not saving any power. Current workaround A workaround via a script + shortcut key is possible, however, it's just a workaround since it doesn't trigger on all ways to lock the session. Therefore, I think it should be possible to have it done more elegantly, for example by providing this option in KDE's configuration dialog of the screensaver. The workaround I am now using is the following. A script that locks the screen and turns off the screen: #!/bin/bash qdbus org.freedesktop.ScreenSaver /ScreenSaver Lock xset dpms force standby and let it run with a shortcut key via a custom menu entry. It works. Here's why I consider it to be a workaround rather than a solution. It doesn't work for other ways to trigger the locking of the session. My actual question(s) Do I need to touching/patching KDE's source? If not what are my options? If so, could someone point me to where I can get started? what do you think is the recommended place in the GUI for configuration? I'm using Kubuntu 12.04 and willing to upgrade to KDE 4.9 or waiting for the 12.10 release.

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  • The battery indicator in Unity panel not showing up

    - by user61415
    I installed Ubuntu 12.04 with Wubi. Well after being completely dazzled with the amount of free content in the Software Centre, I decided to go deeper and start messing with settings. Well after changing the screen brightness the highest level I noticed that there wasn't an indicator for how much battery was left in my laptop. I looked up online on got 2 suggestions on how to fix: Right click on the Unity panel and add an indicator Set it to show in the power settings menu. Well I did both when I right click at the top menu nothing comes up and setting it to show does nothing either. Then I tried installing something in the Software Centre. I got something but when I activated it it said I had 0% power left even though I was charging and at %100 according the Light in the front of my laptop. So now I'm thinking that it doesn't even recognise my computer as a laptop which is weird because in the display settings it says my screen size is set to laptop. How can I install it? I don't know what version it is other then Ubuntu 12.04 and no matter what the icon does not appear with the

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  • How to stop switchable graphics from switching to high-power GPU when charging the laptop?

    - by Saifallah
    I've an Acer laptop with Windows 7 64 bit and an ATI Radeon HD 6550M Graphics card. Whenever I connect the power to charge the battery it automatically switches to the high-power GPU (ATI) instead of the low-power (Intel) GPU. There's an option in the bios to stop such thing but it makes the GPU runs always on high-power and I can't switch to the low-power GPU. How can I prevent the switchable graphics from automatically using the high-power GPU when charging?

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  • F#: how to find Cartesian power

    - by Nike
    I have a problem with writing a Cartesian power function. I found many examples about calculating Cartesian Product, but no one about Cartesian power. For example, [1;2] raised to power 3 = [ [1;1;1] ; [1;1;2] ; [1;2;1] ; [1;2;2] ; [2;1;1] ; [2;1;2] ; [2;2;1]; [2;2;2] ] I use following code to calculate Cartesian Product: let Cprod U V = let mutable res = [] for u in U do for v in V do res <- res @ [[u;v]] res And trying to calculate Cartesian power. I use following code to calculate Cartesian Product: let Cpower U n = let mutable V = U for i=0 to n-1 do V <- Dprod U V V Visual Studio said: Error The resulting type would be infinite when unifying ''a' and ''a list'. I will thankful for any help and links.

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  • Xubuntu: Screen idle-dims after lock+new login although not idling

    - by unhammer
    I set my screen to dim after 2 minutes idling on battery in XFCE power settings. If I lock and click new login, and log in as another user, the screen will dim after 2 minutes even though that second user is active. Is there some setting or workaround for this? It feels like a bug, but I have no idea what program or combination of programs would be responsible … (I don't know if this affects Unity users or not.)

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  • How to configure an Ubuntu 12.04 virtual server and VMWare ESXi5 the way VMWare would be able to shut it down properly?

    - by Ivan
    I run an Ubuntu 12.04 server as a virtual machine on a VMWare ESXi 5 server. I've configured VMWare to shut the quest machines down the sane way (with an ACPI (if I understand it righ) shutdown signal so that guest OSes would do it). And this works with other VMs (running Windows 7 Professional and openSuSE) but doesn't work with the Ubuntu server - VMWare still offers just to power them off when I ask it to stop the guest. Any ideas how to fix this?

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  • When is a Kernel update due for 11.10?

    - by Mysterio
    Thanks to Phoronix there seems to be a fix for the power regression/overheating bug in the Linux Kernel 3.0.1 bouncing around on the Internet. However this supposed fix which I read has been patched to the Kernel in a testing phase is not newbie-friendly (if you know what I mean). So I am guessing it will be included in the kernel update for 11.10. If it will please when is it due? Linked Question: Kernel patch that solves battery issues when for ubuntu ?

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