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• How do I troubleshoot system slowness seen when viewing PDFs or videos?

  - by asp

  Whenever I watch videos, either online of local via Totem and/or open PDF files using evince. The system gets really, really bogged down. All apps get really slow, menus take forever to display, switching windows gives me time to make a coffee, etc. I have a couple of bug reports open on this, but what do I need to do to really troubleshoot the issue? I've purged Adobe Flash from the system, but YouTube HTML5 videos still have the issue. A bunch of PDFs saved locally trigger the problem. And to (temporarily) remove the slowness, I need to shutdown the computer, breath for a few minutes, then restart. A simple reboot does not do the trick. How can I identify the cause? This only started on 13.04. I've had Ubuntu on this machine for a year without a problem until "upgrading" to 13.04. I am not a programmer, but I suspect an issue with the Intel video driver. Is there something I can run which will diagnose this, or are there concrete steps I can follow to find the culprit?

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• Ubuntu Unity (64-bit) Bugs on Nvidia dual screen [closed]

  - by Kristofer

  On my work computer I have upgraded 10.04 to 10.10 and now to 11.04. Upgrades have mostly worked well and the dual screen setup is almost working. There are however a couple of annoying bugs which I tried to report but the bug reporting tool told me to ask about the bugs here. Here's what I have found: Auto-hide stops working. It doesn't seem to matter which application is maximised/covering the dock, it just stays on top. I have tested changing the autohide settings with no result. Scenario: One maximised window on each screen. If I now try to drag the window that doesn't have focus by dragging the top of the window nothing happens. I can also not give the window focus by clicking the top bar, I have to click inside the window and then I can drag the window. If I unmaximise the window with focus it does work and I can both change focus and drag the window directly by clicking the top of the maximised window. Any bug fixes coming for these issues? Any work-arounds?

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• How OS comunicates with HW?

  - by Jack

  Hi, how can program runnig on CPU (mostly OS) acess other PC hardware? Such as Graphic card, HDD and so? From what I read, In DOS, this was done using BIOS calls, specifically INT instruction. But, int instruction should only jump to the certain space in RAM. So, how can some program stored in RAM acess other computer HW, when CPU can acess only RAM, and reeive interrupts? And, does windows use int instructions as well, or is there any new way to communicate with HW? Thanks.

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• Cannot connect to internet with Clearwire modem.

  - by ide

  I'm currently using a Motorola WiMAX modem (CPEi 25725) and cannot connect to the internet. I can connect to the modem at 192.168.15.1 and check its status. It says that it has good/excellent connectivity to the internet and shows all five signal bars. Additionally it has sent and received some WiMAX packets so I believe it is connected to a tower. I'm at a loss for what the problem is. Unplugging the modem, restarting it from software, and restarting my computer (Windows 7) have not helped. Windows still reports that it is not connected to the internet. Alternatively, could this be an ISP issue? I have heard that Clearwire is a not-so-reputable ISP that blocks VoIP, and I was using Skype recently.

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• No display but video card fans spins

  - by Marc

  Since I moved my computer there's no display when I plug my screen in the video card but works fine in the mother board. I tried reseting the cmos, but I still have the same problem. The fans are spining and there's a light from the card. I tried the DVI ports and the HDMI Here's my build. I have it for 2 months and everything was working fine. Do you think it's the video card? Asus p8z68-v pro gen3 Intel i7 2600k 120 GB OCZ Agility 3 16 GB RAM Blue Corsair DDR3 Asus GTX 570 H80 Corsair liquid cooling XFX PRO750W 80Plus bronze power supply EDIT That's why And I can't push more cause the card is on this Thank you everyone! I fixed it by pushing the mobo from the other side of the case and now it fits.

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• New power supply and now HDDs are not recognized

  - by Michael

  So I upgraded to a new X4 ULTRA power supply that was recommended to me by a local TigerDirect store. After installing it along with a new liquid cooling system, I booted it up and it automatically fried my CD Drive. After that I noticed that the OS wouldn't start and figured out that none of the 4 HDDs in my computer were being recognized by the BIOS. I feel them spool at a steady pace and have tried new cables and connections but to no avail. I triple checked all of the connections and cables and have no idea what is wrong. This isn't the first time I changed a PS or CPU cooling system but I am at a dead end. Any ideas, aside from buying a USB HDD reader and seeing if they are all fried? Also, this is a stock Gateway mobo with the mobo USB connections already dead. Could the new PS have fried the SATA connections??

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• PS/2 mouse works with Windows 7 32-bit but not recognised by 64-bit, What to do?

  - by Bogan

  Our USB mouse was stolen and a PS/2 OK_520 Mouse that works OK on my Medion PC, running Windows 7 32-bit, if plugged in before booting, is not recognised by Windows 7 64-bit on a Dell INSPIRONone_19T with a 19" Touch Screen. (It is a communal computer available to all residents.) A USB mouse works OK and the Update Driver option reports: 'driver is up to date'. Without the USB Mouse, Device Manager/Mice shows only the Touch Screen as a Mouse. The Add New Hardware option searches but shows nothing and the Troubleshooter says ' device possibly not recognised, alterations made to system, try again.' but it is still not recognised after repeated re-boots. The BIOS does not seem to have any option to enable a PS/2 Mouse. The Mouse is very old so maybe it is not 64-bit compatible, or there is no 64-bit driver for one, but how to get one if the device is not recognised?

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• Can only connect to IIS site through localhost

  - by Rembrandt Q. Einstein

  I'm building a web service for my company's iPhone application, and everything's been working smoothly by running tests through localhost on the development machine. I'm now in the phase where I need to test connections from other computers within the network, and any connection other than localhost gives me a 404. My internal IP, 127.0.0.1, and computername all get 404 when connecting from any computer, either the one the site's hosted on or any others on the network. Telnet can get through to port 80, and I've temporarily disabled all firewalls on this machine (I do not have control over the external firewall, but I'm only testing connections within the network) Does anyone have a clue why this is happening? I was able to connect to the web service from other computers when hosted on a Mac via Apache, but because I'm now using a SQL Server connection I'm restricted to using IIS for Windows Authentication. Googling only provided answers related to firewalls, and mine is disabled note: I cannot use Anonymous Authentication, but even in testing that it did not affect the issue.

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• PackageForTheWeb "should not be executed directly"

  - by Sergei Ousynin

  When trying to install package (specifically, chipset drivers for Nexcom PEAK-series computer, but I guess it doesn't really matters) I get "PackageForTheWeb Error" saing "This program is used internally by PackageFromTheWeb. It should not be executed directly." I get this error on both Windows 2000 (where it should be installed) and Windows 7. The original driver CD was lost long time ago, so the package was downloaded from the Nexcom website, found no info about installer prerequisites there. What should I install (or anything else) to install this package? UPD: I found a solution - unpacked the package and executed setup.exe that was inside. But I'm pretty sure it's not an action supposed by vendor, so answers are still welcome.

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• Outlook + Exchange 2007: it is possible to rid of local OST files?

  - by kdl

  I am looking for a solution which would allow to use a convenience of Outlook as a mail client app while at the same time have no PST or OST files on a local computer. Even in 'non-caching' mode Outlook creates an OST file where it downloads everything from the Exchange server. OWA does not create any local files (except cookies I believe) but lacks some of the nice features Outlook has. Would it be feasible to place OST files on a network share? Maybe the solution exists for some other client+server pair?

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• Is there any way to facilitate switching windows in Ubuntu?

  - by Ivan

  I'm just a student who received my laptop from my uncle, who's a coder, so I'm still getting used to working with ubuntu. I recently upgraded ubuntu from an earlier version, and everything seems to be pretty great. The only thing is that when I open a program, or file, or whatever, it takes up the whole screen. I can only close it by going to the far top left of my screen, or by ctrl+W. Anyways, I find it really hard to switch between programs. For example I really like to have my windows that are open to be accessible by clicking on their icon at the bottom of the screen... Great when writing or researching. Anyways, I really just want to find an easier way to switch windows. Also, I used to love the way I could cube-rotate my screen, and just drag files from one desktop to another, with compiz. Now, its sort of like flipping a coin when I switch windows, is there any way to get my desktop cube back? And yes, I have enabled all the old settings I used to use with compiz. Sorry if what I'm asking is very basic, I know how to use a computer, I'm just not really familiar with the interface! Any help is greatly appreciated.

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• Configuring Corporate Windows Error Reporting On Windows 7

  - by Clément

  Is there any good documentation out there explaining how to setup Corporate Error Reporting (CER) on Windows 7? I found some information in Advanced Windows Debugging but the book targets Windows XP and things have changed quite a bit since then. I could not find any tutorials on the Internet/MSDN either. To give a bit of background information, I work for a company with 25 employees and I would like to send crash reports to a local server so that I can analyze what causes our tools to crash. I think I need to know two things: Setting up a Corporate Error Reporting server. Setting up computer to send error reports to our Corporate Error Reporting server.

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• Neverending issues with grub (ubuntu 14.04 on ASUS with Win8 dual boot)

  - by Mariana

  This is the most frustrating issue I have ever run into using Ubuntu and Windows in the same machine. I have an ASUS K46CB, 6GB RAM and preinstalled Windows 8.1 64-bits. I have successfully installed Ubuntu 14.04 LTS, also 64-bits. To do so,I followed this tutorial whenever possible. I only failed on the disable secure boot part: there is no 'Secure-boot' or even UEFI mention in my BIOS! Screenshots from other BIOS of the same model show the option under Boot, but in mine there is absolutely none. Because of this, I cannot boot into Ubuntu. The computer loads straight into Windows. I tried running boot repair, but got an error (i can show the log, but it's pretty long). Does anyone know how to fix this issue? UPDATE I reinstalled Ubuntu. Same problem, goes straight to Window. Boot-Repair informs me that i am using Windows in Legacy mode. It excecuted with no errors this time, but after restarting GRUB was still missing. I can't turn off Secure Boot yet. UPDATE I tried using Boot Repair to install grub on a boot-grub 1mb partition. Still boots straight to windows. I feel like punching something

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• tools to check password security

  - by tombull89

  Hello again. I'm after a tool to test how long a password could stand up to a hacking/cracking technique such as brute force as two passwords that are critical to a work system is one word that is in the dictionary, and another is a word in the dictionary with a capital letter and a number instead of a letter. I'd prefer it to be offline and free that you can run on a computer to see how long the password will hold out. Maybe even at the windows login prompt but I realise such programmes may be shady and erring on the side of illegal. Anybody have any suggestions?

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• How to optimize a box2d simulation in action game?

  - by nathan

  I'm working on an action game and i use box2d for physics. The game use a tiled map. I have different types of body: Static ones used for tiles Dynamic ones for player and enemies Actually i tested my game with ~150 bodies and i have a 60fps constantly on my computer but not on my mobile (android). The FPS drop as the number of body increase. After having profiled the android application, i saw that the World.step took around 8ms in CPU time to execute. Here are few things to note: Not all the world is visible on screen, i use a scrolling system Enemies are constantly moving toward the player so there is alaways to force applied to their body Enemies need to collide between each others Enemies collide with tiles I also now that i can active/desactive or sleep/awake bodies. Considering the fact that only a part of the enemies are possibly displayed on screen, is there any optimizations i can do to reduce the execution time of box2d simulation? I found a guy trying an optimization based on distance of enemies from the player (link). But i seems like he just desactives far bodies (in my case, i could desactive bodies that are not visible). But my enemies need to move even when they are not visible on screen, and applying forces will not workd on inactive bodies. Should i play with sleeping bodies here? Also, enemies are composed by two fixtures and are constantly colliding with each others and with tiles but i really never need to get notified about that. Is there anything i can do to optimize this kind of scenario? Finally, am i wrong to try to run simulation at 60FPS on mobile and should i try to make it run at 30FPS?

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• Name of my sql server instance from outside the network

  - by Michel

  Hi, normally i connect to my sql server instance from my local computer, and then the server name to connect to is the name of my laptop. So i can connect to server instance 'MichelLaptop' But now i'm trying to connect to my server from outside my network, and the first thing i wonder is: what is the name of the instance? i've made a redirect to my local machine in the DNS of my domain, so i said (this is not the real data) testsql.mydomain.com goes to 190.191.192.193 and when i ping testsql.mydomain.com, i get a response from 190.191.192.193 But what then is the server name?

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• Preventing my postfix to send my local users spam

  - by Jack

  I have a postfix/dovecot mail server with 100 different users. When they send an email they need to be authenticated. I successfully use saslauth to achieve this. Few days ago I had a problem. One specific user, probably with a virus or a spam-bot installed in its computer, started to send out through my server thousands of emails in few hours. As result, my ip has been blocked by many isp provider (@aol, @yahoo, and others) and has been listed in many blacklist, making all my 100 users unable to send any email to anyone. What is the best practice to avoid this problem? It would be great if my server could recognize a spamming user and automatically block it. Also, have a limit of, say, 30 emails per hour could be a partial solution. Any idea how to face this problem? Thank you

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• Truecrypt system partion partially encryted but then drive corrupted and won't boot - decrypting so I can access files to backup?

  - by Dr.Seuss

  So I was attempting to encrypt my (Windows 7) system drive with Truecrypt and it stopped at around 15% and said that there was a segment error and that it could not proceed until it was fixed. So, I restarted the computer and ran HDD Regenerator which subsequently fixed the bad sectors on the drive, but now my system cannot boot. So, I run a number of recovery disks to no avail (Windows repair is unable to fix) and the drive won't mount on a linux version run from a CD because the drive is encrypted. So I tried mounting the drive using Truecrypt under the Linux distribution on the disk and selected "Mount partition using system encryption without pre-boot authentication" so I can decrypt, but I get an error message about it only being possible once the entire system is encrypted. How do I get out of this mess? I need to be able to back up the data that's on that partially encrypted drive so I can reinstall my operating system.

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• Another hibernation question

  - by GeekOfTheWeek

  I installed Ubuntu on my Windows 7 Sager laptop using Wubi. Hibernate (i.e. suspend to disc) is not an option from the power icon, only suspend, shutdown, etc. Hibernate is also not an option from my battery/lid close options. I understand that hibernation is disabled by default in Ubuntu 12.04. I tried running pm-hibernate but I get the following message: Looking for splash system... none s2disk: Snapshotting system and then the computer just hangs with a black screen. According to the documentation here if this fails then I can't enable hibernate but it offers no help in making pm-hibernate succeed. Could swap be my problem? It looks like I have very small swap: user@ubuntu:~$ cat /proc/swaps Filename Type Size Used Priority /host/ubuntu/disks/swap.disk file 262140 0 -1 The advice on SwapFaq is only for the author's set up (e.g. I don't have an Ubuntu install disk since I used Wubi) and he says that 'INFO: This will not work for 12.04, resume from hibernate work differently in 12.04.' Any advice? I really need to get hibernate working to use my laptop as a, er, laptop. Thanks

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• Long wait until POST...

  - by Wesley

  Here are the specs to put things into context: ECS P4VXASD2+ (V5.0) motherboard Intel Pentium 4 Northwood 2.8 GHz (512 KB L2, 533 MHz FSB) 2x 512 MB PC2100 DDR266 RAM 128 MB NVIDIA GeForce FX 5200 AGP WD Caviar SE 80 GB IDE HDD Gigabyte CD-RW drive OKIA 300W ATX PSU So, everytime I try to boot up this computer, it takes at least 10-15 seconds before it will POST. All my other machines will post within 1-2 seconds, but this one takes a particularly long time. I've read suggestions from a Google search to swap the CMOS battery, check BIOS settings, and double check CMOS jumper. Still after follow those, it takes a while to POST. What else could be causing a long delay before POSTing?

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• HFS partition mounting read-only

  - by Sid

  Hey, I have an external Western Digital Hard drive with two HFS partitions with journaling disabled. When I connect it to a computer running Linux (Debian or Ubuntu), frequently both partitions are mounted read-only. In the past, mounting them on my Macbook and executing the command to disable the journaling often worked (even though it would tell me that journaling was already disabled) but I would love to have a solution which works every time. Thanks! Edit: In light of Chris Johnsen's comment below - my question is how to mount the filesystem read+write on Linux since it is not automatically doing so itself

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• How to show what proxies/firewalls are enabled on Windows XP?

  - by Stephen Melrose

  Hi, I'm trying to fix a Windows XP PC that is having a strange problem. The computer can't seem to connect to the internet, even though an internet connection is present. The router and internet is working fine as I've connected a laptop to it via LAN and wireless and both worked fine. The PC in question is connected to the router as it has an IP from the DHCP. The problem is I can't connect to nor ping any internet address from the PC. I can't even connect to the router admin itself. I've tried both LAN ports in the PC, same problem and both. I'm assuming there's a proxy or firewall on the PC stopping the connections, I just don't know how to find them or see which one is causing the issue. So my question is how do I on Windows XP display the system proxy settings and/or any firewalls that are running? Cheers.

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• What software to use for data backup?

  - by ViliusK

  What software should I use to make back-ups for of my computer files? Features I need: copies should be backup'ed on my Ubuntu server. client soft should monitor folders which I've chosen to backup. client soft should run on Windows XP, Windows 7, Linux. there should be Web UI to view backup'ed file versions. there should be availability to see diff with older versions. backup should be done over Internet to remove machine - server. Any suggestions?

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• Windows 7 Won't find Lexmark X4550

  - by cameronoleav

  I just got Lexmark X4550 wireless printer and want to have it installed on my laptop Windows 7 Beta. I have installed using Lexmark drivers and doing a "add a printer" device search. But when I tried to print a document i got an error message: "Communication not available. The printer cannot communicate with the computer...". This pinter used to work perfectly on my Windows XP Pro SP3. Any help would be greatly appreciated.

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• List and kill running processes on Mac OS in Ctrl/Alt/Delete-like way?

  - by AP257

  So, what do you do on a Mac when a process (as opposed to an application) is hogging CPU, swamping your machine, and you need to kill it? I know you can use top or open Applications > Utilities > Activity Monitor and kill it from there. But what happens when the process is already using so much CPU that doing either of those tasks is impossible? On Windows, you can just do Ctrl/Alt/Delete and the process list will reliably open. So no matter how much your computer is thrashing, you always have access to the list of processes. On Mac OS, there's Cmd/Alt/Escape, which reliably shows running applications. Fine when it's an application causing the problem. But: what do you do if it's a process?

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