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• Cant find one particular wireless network. Worked before, but sudenly stopt working.

  - by Haakon

  My first question here. My problem is: I cant find my wireless network at home. Situation: It worked fine 7 days ago. It works with a cable(wierd). I find the network on my ipad/phone. I can connect to wireless hotspot network form my phone and wireless at my university, and it works fine. I can connect to the network in windows What I have tried: Tried this Strange network issue; works on windows, but not on ubuntu, works on campus wireless, but not at home (removing resolve.conf). Hardware and software: I have a Broadcom card Use dual boot ubuntu 12.04 - windows 7 Things I did to make wireless work: blacklist brcmsmac blacklist bcma blacklist b43 blacklist ssb Can anyone help me? I'm about to kill myself(not literary)!! I'm not that good in linux so go gentle on me:)

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• 12.04 hangs on shutdown/reboot

  - by Wharf Rat

  I'm having the same problem noted here, and when I tried the first fix I found that my /etc/default/grub was empty. I'm willing to try this solution, but I don't know how to remove those drivers. In addition, I'd like my graphics card to be running at optimum efficiency. For now, sudo reboot and sudo shutdown -h nowseem to be working (others have reported that they may only work temporarily), but I don't wish to open a terminal and type my password every time I want to turn my laptop off. What to do?

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• Video playback not working in Ubuntu 11.10

  - by Dave M G

  (Ubuntu 11.10, Gnome Classic with Compiz, Nvidia graphics card) This problem occurs with every and all video, whether it's a Youtube video in Firefox, an AVI file in movie player, or any other video. Video simply does not work. When I start any kind of video, the image halts after a second or two. The sound, however, continues. Before it seemed that if I delete all the files in ~/.gstreamer-0.10/, then reboot, the video will play. However this is no longer the case. Manipulating files in that directory does nothing to help the situation. I am now no longer sure this is a gstreamer issue or something else. I am open to any and all possibilities. How can I get video playback to run smoothly on my machine?

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• How do I create a WiFi hotspot sharing wireless internet connection (single adapter)?

  - by Ruppesh Nalwaya

  I know how to create a hotspot when connected to a wired network, but when I am using internet from a WiFi connection, this disconnects the wireless connection the moment I activate the hotspot. In Windows I can use Connectify Hotspot, which enables me to share the internet connection from the same wireless adapter as I am creating an access point on. As you can read on the technology overview page: Access Point mode allows you to create a hotspot using the same Wi-Fi card that you are using to access the Internet. How do I do this on Ubuntu?

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• How do I turn off nVidia high performance mode?

  - by gpen06

  I am new to Ubuntu 11.10 and never touched linux until today. I installed Ubuntu alongside with Windows 7. I have an issue with my laptop overheating and freezing when it uses the high performance GPU graphics mode (hybrid card). It is an easy fix for Windows 7. I simply set the graphics mode manually to the low performance integrated graphics (save power) mode using advanced power settings. In Ubuntu, I'm stumped at how to do this. When using Ubuntu, my laptop is showing the same symptoms as it did without the fix for Windows. I have the nVidia graphics driver installed for Windows which allows me to see which mode I am in. I downloaded it off of my laptop's website (ASUS). They do not offer driver downloads for linux. Screenshot of power settings in Windows 7

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• Log in sound is playing, but no sound during gnome desktop session.What's the problem?

  - by user14376

  When i installed ubuntu, everything was great. But one day, i heard the login sound but no sound on the desktop session. This happens every time. I have reinstalled sound drivers several times, checked speakers are not mute, checked alsamixer, saw all the troubleshooting tips on the net, checked user privileges too but of no help. anyone knows the answer? Please help!!!!! I have ubuntu 10.4LTS and alc662 sound chip. My computer is detecting the sound card and no problems with my speakers.This maybe a bug but i cannot report as i don't know if this will repeat(I atleast have to solve the problem first).

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• After 10.10 -> 11.04 upgrade, can only login via Classic (No Effects)

  - by Ryan P.

  Yesterday I upgraded from 10.10 to 11.04, everything seemed to go okay until immediately after login: the desktop goes into a "corrupted" looking state (similar to having too high resolution set). I can see some kind of movement by moving the mouse around/right clicking, and can enter text terminals via ctrl + alt + f1 It does this in both plain "Ubuntu" and "Ubuntu Classic", and only seems to login/startup properly with Ubuntu Classic (No Effects). I have checked my video card (Radeon X600) and run the unity support test which passes with all "yes" results (Unity supported: yes): /usr/lib/nux/unity_support_test -p I have tried re-installing my Ubuntu desktop: rm -rf .gnome .gnome2 .gconf .gconfd .metacity sudo apt-get remove ubuntu-desktop sudo apt-get install ubuntu-desktop With no success. I can workaround for now with Classic (No Effects), but I'd really like to find the root problem. Any suggestions on what else to try would be appreciated!

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• Cannot make NVIDIA driver work with Ubuntu 12.10

  - by user1293231

  I seem to have a problem similar to many but I didn't manage to get it solved: have a Lenovo N581 with an NVIDIA GeForce 610M have just installed a fresh Ubuntu 12.10 64 bits, + KDE and am trying to have my NVIDIA card work. Have tried all workarounds posted: purge nvidia, install kernel source/headers and then reinstall nvidia-current-updates (or just nvidia-current), do "sudo nvidia-xconfig". It does create a xorg.conf but does not much (no Module Section by the way). The result is that my system (jokey) tells me that the driver is there but not in use and I only get a 640x480 resolution. If I try to launch nvidia-settings it does indeed tell me that the nvidia driver is not used. I do all this under kde but I guess it does matter at this stage. Any hint of how to resolve this? I feel stuck and cannot use any of the acceleration which is partly why I got that laptop in the first place... thanks for any help/advise you may provide!

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• Minecraft program frame rate is very slow

  - by Cade

  I have recently downloaded Minecraft to Ubuntu 12.04. It launches and plays successfully, however- the frame rates for the game are extremely slow. They never go past 9 fps and usually drop below 3 fps. I have been a Windows XP user for years and have just recently switched to Ubuntu, so I'm not an expert with this OS. My video card is a Diamond Stealth s60 with Radeon 7000. I don't know what other information you guys need but if you ask for it, and would please tell me how to get to it, I will tell you as soon as I can. Thanks for your help.

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• USB internet not accessible

  - by Eric

  I'm brand new to ubuntu and linux. We access internet from a usb stick issued by a local telephone company. When I plug the stick into the computer, I see the device listed under internet connections as a mobile broadband device but it is grayed out and inaccessible. I tried to create a new mobile broadband connection but my country (Gabon) is not listed and we have no payment plans per se (we pay from a pre-paid card system).. Any clues as to how I can get the system to recognize the internet connection? Thanks for any help...

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• installed 12.04 fine. updated graphics driver. now solid puprle screen.

  - by Zephium

  Purchased a new msi ge 70 series labtop. nvidia card gtx 765m. updated driver after install, and ran update manager. All seems well. restarted as required. Now i have a solid purple screen, even if i use boot menu to recovery mode. all i can do is access grub menu 3.10. live cd will run but i get purple screen and cant see choices. please help and im still learning ubuntu. noob talk prefered. i hate making more mistakes. Thanks also tryed changing lines of kernal code using "e" on boot menu, nomodeset and the like. not helping. any way to fix problem through grub?

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• What techniques can I use to render very large numbers of objects more efficiently in OpenGL?

  - by Luke

  You can think of my application as drawing a very large ball-and-stick diagram (or graph). At times, this graph can get very large, where the number of elements even outnumbers the pixels on the screen. Currently I am simply passing all of my textures (as GL_POINTS) and lines to the graphics card using VBO's. When the number of elements outnumbers the number of pixels, is this the most efficient way to do this? Or should I do some calculations on the CPU side before handing everything over to the GPU? If it matters, I do use GL_DEPTH_TEST and GL_ALPHA_TEST. I do some alpha blending, but probably not enough to make a huge performance difference. My scene can be static at times, but the user has control over a typical arc-ball camera and can pan, rotate, or zoom. It is during these operations that performance degradation is noticeable.

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• What command are my volume keys running?

  - by user2787904

  In Unity I use my ThinkPad hot keys to change the volume. I need to know the command that these keys run so that I can bind it in my window manager. I have tried using amixer but could not change the volume through command line amixer set Master 10%- amixer: Unable to find simple control 'Master',0 amixer scontrols: Simple mixer control 'IEC958',0 amixer set 'IEC958' 50%- amixer: Invalid command! So obviously this is not what Unity is running. I have tried changing the default sound card as well but that didn't help.

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• How can I fix the compiz effects lag in unity?

  - by Samir

  I've recently installed ubuntu 11.04, and I actually liked Unity (although many others prefer Gnome), but there seems to be a lag problem. Every time I press the super button to bring out the Dash, or Super+W to show all windows, or any other action that involves some sort of effect, the effect lags a bit, and it could get really annoying. I've seen a fix using CompizConfig Settings Manager, but that doesn't seem to work for me. I've got a NVidia 9800 GT 1 GB video card, a 2 GB Ram, and not sure about the CPU (if you need it, tell me and I'll figure it out). Any help would be appreciated Thanks in advance.

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• Dell Vostro 1510 can't connect to wireless--how can I fix this?

  - by Miss Spider

  I'm having some trouble with my Dell Vostro 1510. I installed wubi on it two days ago and I've only been able to use the Internet with an ethernet cable. The network seems to definitely recognize that the wireless--even other peoples' wireless--is there, but it can't manage to get on. I'll post the lpsci here, so that you can see the Broadcom card I'm working with. I have downloaded the kernel 2.6.39-0-generic, which doesn't appear to have done a lick of work. 06:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)

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• Xubuntu and other Debian based distros slow

  - by William V

  I have a Compaq Presario SR1950NX desktop computer with the AMD64 3800+ processor and 1GB ram and it seems that Ubunutu, Xubuntu and Lubuntu are all laggy. Things seem to be slow such as clicking on menus and opening programs and the UI renders in peices. When using the browser the system slows down considerably. I ran the TOP command and I do notice that xorg hits 30 to 40 percent cpu when running the browsers. I have tried these distros on a spare P4 machine and it is even worse. As long as I don't have a several things open at one time I can manage to get around although sluggishly. I also notice that I can't get debian based distros to install in 64bit (crtc6 failure) only in 32bit. Can anyone tell me what is it that I might be doing wrong? I have an integrated Nvidia card and have tried several of the recommended drivers which sometimes result in no boot screen upon reboot. Thanks

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• Drivers are not detecting on my Dell inspiron 5420 (14R 3rd generation)

  - by Ranjan Mallik

  I'm using DELL inspiron 5420 (14R 3rd generation), and tried to install ubuntu 10.10, 11.10, 12.04, 12.04.1 but each and every time it doesn't support any of my driver such as network card, wireless driver, video driver and as well as audio and touch-pad driver. audio, video and touch-pad works with their basic functionality but don't work with their full functionality. I'm a new user of ubuntu, and willing to use it permanently. In this condition I tried some solutions from the web but didn't get out from this problem. For this I'm knocking to you, If you give me the proper solution for getting out of this problem, I'll be very helpful to you all. Thanks

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• How can I stop pixel seams appearing in adjacent mesh boundaries due to floating point imprecision?

  - by ufomorace

  Graphics cards are mathematically imprecise. So when some meshes are joined by their borders, the graphics card often makes mistakes and decides that some pixels at the seam represent neither object, and unwanted pixels appear. It's a natural behaviour on all graphics cards. How are such worries avoided in Pro Games? Batching? Shaders? Different tangent vectors? Merging? Overlaping seams? Dark backgrounds? Extra vertices at borders? Z precision? Camera distance tweaks? Screencap of a fix that ended up not working:

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• How do you ensure consistent experience across multiple graphics cards (or even driver versions)?

  - by Grigory Javadyan

  So I was writing a simple 2D game with OpenGL and SDL and had this problem when there was awful tearing when running in windowed mode (even though I explicitly asked SDL_SetVideoMode to use double buffering). Didn't worry about it all too much because most of the time the game grabs the entire screen, windowed mode is just for debugging. Anyway, yesterday I updated my nVidia drivers and tearing disappeared, the game runs smooth and looks nice in windowed mode too. I can see how the problem may be in the graphics driver, but this leads to a question. Obviously, professional game developers have to deal with a lot of different hardware/software configurations. What are the techniques they use to make sure the game looks the roughly the same on different graphics cards or even the same model of graphics card, but with different driver versions?

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• ubuntu 12.04: Why my laptop is consuming more power than 11.10?

  - by sanz

  I had 11.10 X86 on my Asus laptop (sandybridge, Nvidia 520M). I had 8 hours' battery life with Bumblebee and Jupiter. Average battery discharge rate was around 10w. Later I changed, not upgraded, to 12.04.1 AMD64. I installed Jupiter. But there is no "restricted drivers" available so I guess Bumblebee will not work. So I removed nvidia drivers. Now I only get 4 hours' battery life. Average battery discharge rate is around 19w. The removal of nvidia driver did not make any difference. What's the cause? Nvidia video card not disabled or 64b version of Ubuntu?

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• How should I setup billing for AdWords when managing a client's campaign in My Client Center? [closed]

  - by Dustin

  I have worked with Google AdWords before and will now be managing an AdWords account for a client. I have a My Client Center account, but I'm wondering what the best practices are for billing. Should I link billing to my own credit card and then have the client pay me (they have to pay me to manage the account anyway), or should I have the client pay Google directly? How is this usually done? If it is the later, what is the best way to have them input their payment info?

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• Acer AO722 flickering screen

  - by user1131702

  The screen on my Acer Aspire One netbook (AO722) flickers for a few minutes when Ubuntu awakens the screen after a period of inactivity. I am pretty sure this is not a hardware issue, as I never see this problem in Windows and both of my Acer netbooks exhibit the same problem. I see the flickering in all recent versions of Ubuntu -- 11.10, 11.04, and 10.10. Surprisingly I haven't been able to find a lot of information about this problem online. I believe the video card in this netbook is Radeon 6290 paired with AMD C-60. I am using the default open source video driver. Would appreciate any tips on how to get rid of the flicker. Thanks!

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• How do I adjust the resolution on an Intel gma x3100?

  - by Salinski

  I'm with fresh install of 12.04, having gma x3100 as a video card. The problem is I own 19" monitor with native resolution of 1280x1024 but can't force screen resolution on more then 1024x768 ~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9 I been digging up some info for the past 2 days, yet haven't found any solution. Even tried using gdm instead of lightdm. Any help is appreciated.

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• wireless not showing up in network manager applet.

  - by Vidur Vishnudutt

  there is only the wired connection option available when the menu drops down. i have installed a belkin wireless g card for my desktop. it has been used before on this version of ubuntu 10.10, but after upgrading it shows only wired networks. enable networking and enable notifications have both been ticked. still only wired networks coming. im using ubuntu 10.10 maverick meerkat on my desktop comp and im an absolute begginer at ubuntu. can some one please help me re enable wireless on my comp?

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• Ubuntu 12.10 64b does not shutdown

  - by user108264

  I am a new linux user so i am not familiar with what actually is needed to check. When shutting down or trying to restart i get a screen with yellow letters and the system does not close or restart. I have to shut down manually. I can't type all the numbers but i will give the last ones. [90102.232650] [ end-trace 435966f5b367871 ] this seems to have happened after i downgraded the xorg so i can get drivers for my ATI card(4850HD). The suspend command works fine.

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