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• cannot connect to wireless network on ubuntu 12.04

  - by angjinhang

  i have installed ubuntu on my 6-year-old Acer Aspire 4310 and i love it's lightning speed.but, now i have a big problem, that is it cannot connect to any wireless network. the wireless network worked well in my windows. the wireless switch is not responding to me(i guess it only works on windows). there are also no wireless toggle switch on my keyboard. i have installed my driver, yeah, a proprietary driver. i installed it, and my i never see my wireless network anymore, even the enabling and disabling button in the system settings. i can connect my wireless network during the ubuntu installation. so what's the problem? i cannot find wlan0 in the ifconfig output. i can still see the enable and disable button in the system settings before i install the driver. now even i remove the driver, i will no longer display. i wanted my wifi back, help!

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• Compiz features stopped working when an external monitor is attached

  - by adjfac

  Running 12.04 on a thinkpad T520 with nVidia NVIDIA Quadro NVS 4200M graphics. Just updated to the lasted nvidia 310 driver. Everything works great. However, as soon as I attached an external monitor using nvidia twinview, compiz features such as scale (moves all the active windows in one page) stopped working, as well as alt-tab to list all opened programs. Any ideas how i can fix this? never had this problem with 11.04. I can post my xorg.conf if that's of use to you. Thanks much! edit 1: I am using gnome3 classic edit 2: alt-tab works -- compiz application switcher (by default for gnome3 / unity) will crash gnome-classic, by changing to "static application switcher" in compiz seemed to solve the problem, but the scale still does not work when an external monitor is attached.

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• GRUB's menu.lst deleted after a kernel update

  - by the_drow

  I have installed ubuntu through wubi and all was well until I updated to the next kernel version. I am now trying to boot into ubuntu and it shows me the GRUB rescue command line. I am able to boost windows and the problem seems to be related to the fact that I have no menu.lst on ubuntu\disks\boot\grub and also it might be related to the fact that wubi wasn't installed to the drive where windows is installed but I am not sure. How do I recover menu.lst? Does the problem lay somewhere else? Is there a way to read the data with a windows tool to just recover my data?

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• JS / HTML 5 Compatablity issue on iOS 6

  - by Dhaval

  I'm using HTML 5 to play video and there are some content before the video so I'm using flexroll to scroll that whole window. I'm checking it on iPad, now problem is that in iOS 5 its working fine but when I update to iOS 6 then screen is not scrolling only video is scroll up and down, content is as it is in the position. I can't understand what is the exact problem. Is that js compatibility issue or HTML 5 video compatibility issue. Can anyone please help me to figure out, your help will really be appreciated.

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• Getting trayer to work with dual screen setup

  - by Ikke

  I'm using XMonad as my window manager, and want to use trayer as a icon panel for things like nm-applet. The problem was that the panel wouldn't appear on the top of the screen. If I set it to the bottom it just appeared. After a lot of trying, I found out it is because my xorg.conf is setup for dualscreens, and probably the trayer panel is spawned outside my view (I currently have only a single screen, but I switch a lot). After manualy tweaking the xorg.conf file to allow for just one screen, the panel appears on the right spot. These are the things I had to modify: Section "Monitor" Identifier "0-LVDS" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "PreferredMode" "1366x768" Option "TargetRefresh" "60" Option "Position" "0 0" # Was 1280 256 Option "Rotate" "normal" Option "Disable" "false" EndSection SubSection "Display" Viewport 0 0 Virtual 1366 768 # Was 2646 2646 Depth 24 EndSubSection The problem is ofcourse that I can't use my dual screen setup anymore. Is there a way to force trayer on the right position even with the dualscreen setup?

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• Strange behaviour when screencasting

  - by Luis Alvarado

  Since an update I did yesterday I am not able to screencast any video using Kazam, Recordmydesktop or even ffmpeg/aviconv. After the upgrade to some libraries (A normal update that showed in Update manager) the problem was this: When doing the screencast, scrolling inside an Apps window like Firefox, Chrome or Gedit is not shown. The video only shows the last image it recognized before I started scrolling. For example with Gedit, I have a lot of text on it and when I start to scroll down, the video only shows what I had in the beginning while I listen to myself talk about what is in the rest of the file (Which is not shown in the video). When opening a window, for example again Gedit or Chrome it might not show in the video, it will just show the desktop without the window opened. I do not see any error with dmesg, syslog or others. What can I check to debug this problem?

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• Netbeans 7.0.1 not opening

  - by z22

  I am working in Netbeans on Ubuntu for the last 4 months. But today when I opened Netbeans, it just got stuck in the Ubuntu launcher bar at the left side of screen. I have my project pending in Netbeans (which is not opening). I am stuck in this problem. I also rebooted Ubuntu a number of times, still the same. I can't open Netbeans. Why is this happening? What is the cause of this problem? What should I do? tried $gksu netbeans, nothing happens, $ prompt shown again.

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• Menu bar and launcher missing in new installation of ubuntu 13.04

  - by Assimiz

  I have just installed ubuntu 13.04 on my ThinkPad laptop. I am missing the launcher and upper bar. I only found references to the same problem for upgrades, so I tried everything written here, here and here with no success. However, referring to the second link, I ran ccsm and found my Ubuntu Unity Plugin unchecked. Checking it required to also enable the OpenGL and so I did. But, apparently I am unable to enable the OpenGL. Trying to enable it manually...and the checkbox gets automatically unchecked after few seconds. Please help. Update: I have Intel graphics driver, maybe the problem is specifically with it?. I also tried running ccsm after logging using CTRL+ALT+F1 like given here. I was able to enable OpenGL and the Ubuntu Unity Plugin there, but still, no effect on my display, also after reboot.

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• How to re-partition?

  - by EDi

  I switched from Windows to Ubuntu 4 months ago and I am really happy with it. I set up a dual-boot system (since I wasn´t sure how it will end up with me and Ubuntu). After merging from Citavi to Zotero I need windows only for my scanner. The problem I have now is, that the windows partion is so big with lots of unused space and the ubuntu partition are quite small - I should have though about this problem 4 months ago... My partitions look like this: Where sda3 is the windows partition, sda5 is Ubuntu and sda7 is a data partition. I want to shrink sda3 and free some space for sda5 and sda3. How can this be done safely (and easily)?

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• Nvidia Powermizer Performance Levels

  - by jeffrey

  Is there anyway to configure Nvidia Powerimizer performance levels? My current setup has 3 power levels with the lowest one being 50mhz. The problem with this it that it lags compiz when it goes to the lowest performance level 0. Minimizing, maximizing, dragging windows, etc. are all sluggish when it's at the lowest level. Once powermizer leaves level 0 everything is very smooth and runs great. Is there anyway for me to remove level 0 and just run Level the two higher levels 1/2? I don't want to complete disable powermizer, but I can't stand the lagging once powermizer goes into performance level 0. Setting the option "prefer maximum performance" fixes the problem as it disables powermizer, but the GPU is overkill at stock speeds for most desktop use @ 850mhz. intel i5 2500k asus gene-z z68 evga 560ti fpb (driver 295.40) ubuntu 12.04 LTS x64

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• Efficient Bus Loading

  - by System Down

  This is something I did for a bus travel company a long time ago, and I was never happy with the results. I was thinking about that old project recently and thought I'd revisit that problem. Problem: Bus travel company has several buses with different passenger capacities (e.g. 15 50-passenger buses, 25 30-passenger buses ... etc). They specialized in offering transportation to very large groups (300+ passengers per group). Since each group needs to travel together they needed to manage their fleet efficiently to reduce waste. For instance, 88 passengers are better served by three 30-passenger buses (2 empty seats) than by two 50-passenger buses (12 empty seats). Another example, 75 passengers would be better served by one 50-passenger bus and one 30-passenger bus, a mix of types. What's a good algorithm to do this?

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• Problems booting Ubuntu 10.10 with Nvdia GeForce 6600gt

  - by SlyrNemesis

  I am quite new to Ubuntu and I already stumbled upon a problem. I run Ubuntu 10.10 Maverick Meerkat now and Install went fine, when trying to boot the screen popped black and I faced this message "gpu lockup - switching to software fbcon." When setting the display to onboard VGA through BIOS Ubuntu has no problem at all, but when I switch back to my AGP card (which is a Nvidia GeForce 6600GT) I get that message again. I do not use VGA for that card I use my DVI cable for it. Does anyone have an answer for me to make this work? Thank you

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• I can't log into my ubuntu 12.04

  - by user292674

  When I try to log in on my Ubuntu 12.04 it goes to a black screen ( of logging in checking stuff ), and says Checking battery ----- [ok] ( I'm using a computer instead of a laptop ) and just goes back to the login screen. Two days before I executed the command sudo startx trying to start KDE, but it didn't work. And after logging off and trying to log in again, I had this problem. A big problem is that I don't have internet connection at home. What should I do?

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• Cannot access my own web page

  - by enflam3

  I am developing, learning and experimenting with php,html,javascript,flash and so on. Having web hosting and all of the cpanel, phpmyadmin and other utilities. One day, while updating information, connection between my computer and website just went down. I found out that it is only from this computer, where I cannot access anything. I don't know what is the reason I cannot access website, however this is what I have checked so far: Everything else opens normally, having problem only with my page. Cannot access FTP,cpanel or any kind of information related to the domain and hosting ipconfigs detects IP, but shows request timed out (so its not browser related) Turned off Firewall,AV, Rebooted computer Cleared caches,temp,cookies,histry with CCleaner Checked connectivity with both (wired,wireless) networks ISP has dynamic IP that has been changed about 3 times since issue Checked host file I am out of ideas and understanding what could cause this kind of issue, however couple minutes ago, found out that everything works with proxy server (when adding IP and port to the browsers) Can someone point out what should I check or try to get rid of this problem?

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• WiFi on Ubuntu 12.04 custom: downloading unbearably slow

  - by Mark

  iwconfig reports 11 Mbps, yet I've seen as low as <1 KBps. This is the latest in my laundry list of Ubuntu problems in a dual-boot machine (cyberpowerpc custom, intel i7-3820, nvidia gtx 570). I received it two days ago, Windows 7 running fine, still having problems with Ubuntu. The browsing is intermittent but unacceptable. e.g. I could get to this site last night but I couldn't post this question. The downloading is unbearably slow, I can't download anything or install any packages because the speed is so slow. e.g. I am trying to install vim which is inexplicably missing from my 12.04 install (add another one to the problems list) and my download speed reported in the terminal was 241 B/s. Yes, bytes. iwconfig reports 11 Mbps, which further adds to the confusion. User@ubuntu:~$ iwconfig lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"linksys" Mode:Managed Frequency:2.437 GHz Access Point: 00:18:39:76:2C:A1 Bit Rate=11 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=36/70 Signal level=-74 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:54 Invalid misc:18 Missed beacon:0 eth0 no wireless extensions. Any ideas? I see this is a problem a lot of people, but none of the on line solutions have worked for me so far. e.g. one site recommends editing the ath9k.conf file in /etc/modprobe.d, yet this file isn't even in the folder: User@ubuntu:/$ cd etc/modprobe.d User@ubuntu:/etc/modprobe.d$ ls alsa-base.conf blacklist-oss.conf blacklist-ath_pci.conf blacklist-rare-network.conf blacklist.conf blacklist-watchdog.conf blacklist-firewire.conf dkms.conf blacklist-framebuffer.conf nvidia-current_hybrid.conf blacklist-modem.conf nvidia-graphics-drivers.conf I think the nvidia gpu might be mucking things up. I had the "blinking cursor" problem when installing in the first place, and then I had the monitor out of range problem as well. I have my faithful Asus laptop, which is running Ubuntu 12.04 just fine. The only difference is executing host -t SOA local in the terminal gives User@ubuntu:~$ host -t SOA local local has SOA record local. nobody.localhost. 42 86400 43200 604800 10800 in my new machine, and the command reports Host local. not found in the laptop. Help would be most welcome, as I am in danger of reverting back to Windows. I'm seriously considering it. Sorry for the length, trying to show my effort in resolving the issue and include terminal snippets that might be helpful.

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• Why is it an issue that it takes 2 digits to represent the number 10 in decimal?

  - by Crizly

  So we use hexadecimal which has the advantage of going up to 15 in single digits A-F, but why is it an issue that it takes 2 digits to represent the number 10 in decimal? I was reading up about hexadecimal and I came across these 2 lines: Base 16 suggests the digits 0 to 15, but the problem we face is that it requires 2 digits to represent 10 to 15. Hexadecimal solves this problem by using the letters A to F. My question is, why do we care how many digits it takes to represent 15? What is the importance of this number, and how does denoting it with a single character have any value?

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• Particles are not moving correctly [closed]

  - by cr33p

  I want to make a particle explosion, after something gets destroyed, but somehow only one line of mixed colors show up on the screen. Here's the header: http://pastebin.com/JW5bPLj2 Here's the source: http://pastebin.com/KHmFqytD I don't get what's wrong, as it's nearly the same as in "Programming Linux Games" Can somebody help me fix that? PS: "Uint32 delta" is needed to update the pixels based on time. PSS: Maybe I should add that it's programmed in C and includes SDL. EDIT: Found the problem. It was the "drawParticles" function. The problem was, that I passed a double to "offset" (as particles[i].x, etc are all doubles). So I ended up with values like ~MAX_INT because I didn't cast the doubles properly to ints.

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• eth0 not working on startup

  - by user4106

  Hi to all, This might sound strange but, working with my Lubuntu 10.04 i've experienced troubles when connecting to my eth0 newtwork. After some googling, i've found out that by writting in the CLI the following command: mii-tool eth0 -F 10baseT-FD and activating the eth0 in the toolbar (by clicking "activate eth0") everything works just fine. Well, up to now, i did not have any problem, because every time i turned on the computer i had to do this, but it was very little effort.But now, i would like to use the machine as a file server, accesing it by ssh, without monitor or keyboard. So, i won't be able to make this actions, and can't do this at startup because mii-tool needs root permissions. So, the question is: Do you know what does that command do, and how can id make that change permanent? Or do you know any other solution for my problem? I hope i was clear! If not, tell me and i'll try to be as clearer as possible. Thanks in advance!

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• Fujitsu B6220 laptop, sometimes my desktop freezes upon resume from standby

  - by user89756

  I installed Ubuntu 11.10 on my Fujitsu Lifebook B6220 laptop just before 12.04 was released. I can not remember if I had this issue with Ubuntu 11.10 as I updated the install to 12.04 about a week after 12.04 came out. My problem is that sometimes upon resume from standby my desktop is frozen. The keyboard, touch pad, and touchscreen work, but there is no response from the desktop. I can ctrl-alt-f2 and log in and then from there I just reboot the computer. This happens about 50% of the time when I resume from standby but I have not noticed a distinct pattern. I have thought about reinstalling 12.04, since I upgraded 11.10 to 12.04 instead of a fresh install. But I have customized my laptop a lot and I would prefer to avoid reinstalling it, I'm not even sure if that would fix it. Anyone have a idea what might be the problem? If I should submit this as a bug, could someone point me in the right direction please? Thanks, Matt

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• What do I need to do when installing old version of ubuntu on new arch platform?

  - by Blangero

  I got a board with aptio cpu which is said to be of new platform and may have driver problems while using old version of ubuntu, and it do have. After installing my customized Live ubuntu server with X(the system runs as a liveCD), X starts but failed to get right resolution. If I run ubiquity in the live system to install the system to my disk, I can't start X and the whole console was a mess.Tried connect from ssh and upgrade, failed to solve the problem. Install ubuntu 12.04.2 desktop, at bootup the text was a mess, X starts and still could not get the right resolution. Install ubuntu 14.04 server, at bootup the text was also a mess, but it turned clear and the resolution is right. So what else do I need to provide? CPUInfo ? lspci -nn | grep VGA ? anything else? And what's the problem? What can I do to support the newest arch in my customized system? Thanks

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• Steam not opening or responding at all

  - by user109409

  The steam client won't open nor does it display any error message. I have tried right click > Games. I ran steam steam://open/games command, but the client just does not respond. Removing it with apt-get remove steam, deleting the Steam directory & the .deb file and reinstalling it, did not work either. This problem only occurred after I used killall steam.sh to force quit it, it was working fine before. I'm running 12.10 on a 64bit laptop with no additional drivers installed. Anyone else have this problem and a possible workaround? Thank you

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• Fixing a broken toolbox (In Visual Studio 2010 SP1)

  - by mbcrump

  I was recently running into a situation where every time I opened Visual Studio 2010 SP1, the following message would appear for about 60 seconds or so: "Loading toolbox content from package Microsoft.VisualStudio.IDE.Toolbox.ControlInstaller.ToolboxInstallerPackage '{2C98B35-07DA-45F1-96A3-BE55D91C8D7A}'" After finally get fed up with the issue, I started researching it and decided that I’d share the steps that I took to resolve it below: I first made a complete backup of my registry. I then removed the following key: [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\10.0\Packages\{2c298b35-07da-45f1-96a3-be55d91c8d7a}] I went to the following directory: C:\Users\Your Name Here\AppData\Local\Microsoft\VisualStudio\10.0\ and created a folder called bk and moved the .tbd files to that folder (they are hidden so you will have to show all files). I then removed the .tbd files in the root directory. I then launched Visual Studio 2010 SP1 again and it recreated those files and the problem was gone. Anyways, I hope this helps someone with a similar problem. I created this blog partially for myself but it is always nice to help my fellow developer.  Thanks for reading. Subscribe to my feed

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• session indicator icon goes wrong after I upgrade to 12.10

  - by CoIn

  I upgraded my 12.04 to 12.10 yesterday, everything goes fine. But I found the little gear icon of session indicator was show incorrectly. I've re-installed the indicator-session package and changed to default theme but the problem remains. It's not a big problem but it is just annoying, hope you guys can help me! oops! I don't have enough reputation to post a image! You may move to this link to see it, thanks http://www.flickr.com/photos/flowfox/8115089204/

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• Mobile traffic of my second site redirected to my base site [Edited,have a look]

  - by Faheem Rasheed

  I have a strange issue with my website and it seems i am unable to understand what cauese the problem.I would highly appreciate your help.The Scenario is I have two websites. Website A Website B Website A is simply hosted within the root directory of my hosting account.Within this root *directory* i have a sub folder " subfolder A " and within which is another subfolder " subfolder B " that contains my site Website B so the path looks like root/sublfolder_A/subfolder_B/ that contains my **Website B ( i.e subfolder_B) ** All goes fine.When i access the website B from my desktop/Laptop Website B is loaded normally. but when i access the Website through a mobile device , mobile site of Website A is loaded while as it should load website_B Also , to let you know , both websites have different URL's and not subdomain's or anything. What could be the problem ? htaccess of website B or website A ? or something else ? Here is the htaccess of my website B RewriteEngine On RewriteRule .* index.php [F] RewriteBase / RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}] RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule .* index.php [L]

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• Out of range on shut down, Log Out, Restart and Suspend

  - by user52889

  I have looked extensively on the help forums but haven't found a similar problem. Whether I want to Shut Down, Restart, Log Out or Suspend, as soon as I select my desired option the screen goes black with a message (Out of Range displayed in the middle of the screen. No combination of keys frees the screen and I have to manually hold the power button on my PC to shut it down. There is no problem on start up. My computer is a dual boot with Windows 7.

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