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• How do I figure out which version of OpenCL comes with my nvidia-current-dev package?

  - by levesque

  I am running Ubuntu 10.04 with an nvidia geforce GT 240 card. I installed nvidia-current-dev with apt-get, thus I got a bunch of headers and lib files for OpenCL. However, I am unable to figure out if I have OpenCL 1.0 or 1.1 (could be 1.2, though I doubt it). Does anyone know a way to figure out which version of OpenCL comes with the nvidia-current-dev package (version: 195.36.24-0ubuntu1~10.04.2)? If not, is there another place where I could get an answer?

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• Strange Grub behavior Series 9

  - by jothebo

  I have got a Samsung Series 9 900x3c with Ubuntu 12.04 on. After installing Ubuntu Grub would not load completely (only parts of the Menu were showing) every time so I launched the Boot repair indicating the use of an UEFI bios. Now Grub always loads completely but I do not seem to be able to launch Ubuntu directly. Instead I have to select Advanced options for Ubuntu and the newest Kernel Version and then the boot starts. Any ideas? Thanks a lot in advance Johannes

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• Install a different version of a package

  - by Michael Wiles

  I'm running lucid server and have installed tomcat. The version it installed is 6.0.24-2ubuntu1.6. Is this the version I'm tied to? Is it possible to install a more recent version? The one available from maverick is 6.0.28. Maybe I can add a source to provide my lucid install with this version? In the package manager user interface I can "force version". Is it possible to force version from command line alternative as well?

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• Is there a preferred way to set up a virtual Ubuntu server on a desktop?

  - by Keith Groben

  I love Ubuntu, and as I am searching the internet, I am finding that some questions I have have not been answered yet. One of them is if there is a preferred way to set up a virtual server. I look through the Ubuntu Software Center, but found nothing from the search "Virtual Server" I then searched the internet and found lots of posts to trouble-shoot VMWare virtual servers. So, like a good researcher I looked in the Software center for VMWare. Sure enough I found "user agent" and "view open client". I didn't get sufficient info from the software center. And searching the website only left me scratching my head. I want to install Ubuntu Server Edition. I already have a server, but am cautious "trying out" things on it. So a virtual server sounds like what I need.

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• Could not connect to wireless unitl reboot (nl80211)

  - by user107410

  I'm using Samsung NP900X3C. I have problem with occasionally connecting to WIFI, with Ubuntu 12.10. Sometimes my computer could not connect to WIFI "blab", neither after reboot computer. Only solution is to restart WIFI hotspot. It's public WIFI, used by many users, that don't have that problem. My /var/log/syslog: Nov 12 10:09:39 k15 wpa_supplicant[1308]: wlan0: SME: Trying to authenticate with 64:70:02:89:7c:d7 (SSID='blab' freq=2427 MHz) Nov 12 10:09:39 k15 kernel: [ 8.908610] wlan0: authenticate with 64:70:02:89:7c:d7 Nov 12 10:09:39 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: scanning -> authenticating Nov 12 10:09:39 k15 kernel: [ 8.915032] wlan0: send auth to 64:70:02:89:7c:d7 (try 1/3) Nov 12 10:09:39 k15 wpa_supplicant[1308]: wlan0: Trying to associate with 64:70:02:89:7c:d7 (SSID='blab' freq=2427 MHz) Nov 12 10:09:39 k15 kernel: [ 8.916753] wlan0: authenticated Nov 12 10:09:39 k15 kernel: [ 8.916839] wlan0: waiting for beacon from 64:70:02:89:7c:d7 Nov 12 10:09:39 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: authenticating -> associating Nov 12 10:09:39 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: associating -> disconnected Nov 12 10:09:39 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: disconnected -> scanning Nov 12 10:09:42 k15 wpa_supplicant[1308]: wlan0: SME: Trying to authenticate with 64:70:02:89:7c:d7 (SSID='blab' freq=2427 MHz) Nov 12 10:09:42 k15 kernel: [ 12.386212] wlan0: authenticate with 64:70:02:89:7c:d7 Nov 12 10:09:42 k15 wpa_supplicant[1308]: wlan0: Trying to associate with 64:70:02:89:7c:d7 (SSID='blab' freq=2427 MHz) Nov 12 10:09:42 k15 kernel: [ 12.389114] wlan0: send auth to 64:70:02:89:7c:d7 (try 1/3) Nov 12 10:09:42 k15 kernel: [ 12.391021] wlan0: authenticated Nov 12 10:09:42 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: scanning -> authenticating Nov 12 10:09:42 k15 kernel: [ 12.391332] wlan0: waiting for beacon from 64:70:02:89:7c:d7 Nov 12 10:09:42 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: authenticating -> associating Nov 12 10:09:43 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: associating -> disconnected Nov 12 10:09:43 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: disconnected -> scanning Nov 12 10:09:46 k15 wpa_supplicant[1308]: wlan0: SME: Trying to authenticate with 64:70:02:89:7c:d7 (SSID='blab' freq=2427 MHz) and after restart WiFi, I could connect: Nov 12 10:11:51 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: inactive -> scanning Nov 12 10:11:55 k15 wpa_supplicant[1308]: wlan0: SME: Trying to authenticate with 64:70:02:89:7c:d7 (SSID='blab' freq=2427 MHz) Nov 12 10:11:55 k15 kernel: [ 144.445154] wlan0: authenticate with 64:70:02:89:7c:d7 Nov 12 10:11:55 k15 kernel: [ 144.453994] wlan0: send auth to 64:70:02:89:7c:d7 (try 1/3) Nov 12 10:11:55 k15 wpa_supplicant[1308]: wlan0: Trying to associate with 64:70:02:89:7c:d7 (SSID='blab' freq=2427 MHz) Nov 12 10:11:55 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: scanning -> authenticating Nov 12 10:11:55 k15 kernel: [ 144.455860] wlan0: authenticated Nov 12 10:11:55 k15 kernel: [ 144.458681] wlan0: associate with 64:70:02:89:7c:d7 (try 1/3) Nov 12 10:11:55 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: authenticating -> associating Nov 12 10:11:55 k15 kernel: [ 144.462799] wlan0: RX AssocResp from 64:70:02:89:7c:d7 (capab=0x431 status=0 aid=9) Nov 12 10:11:55 k15 kernel: [ 144.486368] wlan0: associated Nov 12 10:11:55 k15 wpa_supplicant[1308]: wlan0: Associated with 64:70:02:89:7c:d7 Nov 12 10:11:55 k15 kernel: [ 144.487435] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready Nov 12 10:11:55 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: associating -> associated Nov 12 10:11:55 k15 NetworkManager[1004]: <info> (wlan0): supplicant interface state: associated -> 4-way handshake This problem is appearing regulary. My WiFi device control is nl80211. Nov 12 10:09:32 k15 NetworkManager[1004]: <info> (wlan0): using nl80211 for WiFi device control Nov 12 10:09:32 k15 NetworkManager[1004]: <warn> (wlan0): driver supports Access Point (AP) mode Nov 12 10:09:32 k15 NetworkManager[1004]: <info> (wlan0): new 802.11 WiFi device (driver: 'iwlwifi' ifindex: 3) Nov 12 10:09:32 k15 NetworkManager[1004]: <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/0 Nov 12 10:09:32 k15 NetworkManager[1004]: <info> (wlan0): now managed Nov 12 10:09:32 k15 NetworkManager[1004]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] Nov 12 10:09:32 k15 NetworkManager[1004]: <info> (wlan0): bringing up device.

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• LTS 12.04.1 will not resolve domain.local websites

  - by user108502

  I have done a brand new installation of the Ubuntu server (v12.10) with bind configured to have a dns zone of gdos.local and apache configured for said domain. With a brand new installation of Ubuntu desktop LTS I try to connect to www.gdos.local and all I get is: Server not found Firefox can't find the server at www.gdos.local. Check the address for typing errors such as ww.example.com instead of www.example.com However if I change the domain to gdos.tmp and type in www.gdos.tmp, I get the internal website. If I change it to mybusiness.local , I get the same error message. If I use a Microsoft os, this works fine, all three domains resolve to a webpage. I have searched the internet flat for the past week on dns issues but have not come up with a solution. I have followed instructions from removing dnsmasq to editing like resolv.conf (in some very strange places) and I still have no joy on getting the .local domain extension to work. I can safely say the issue is not with the server but with the desktops because if the issue was server related the Microsoft OS's would not resolve it either. I have done several installs of the desktop in an effort to make sure that I did not break anything while trying to fix this. Please can anyone point to a workable solution for fixing the .local domain extension. Thank you Mark Hollander

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• Need help fixing DPKG errors after update from 12.04 to 12.10

  - by James Wulfe

  So I was doing fine then i upgraded my system to 12.10 and now i cant get my system to update all of its packages properly. no matter what i do, what is happening here and how do i fix this. if i would have thought 12.10 would be this much of a hassle i would have never upgraded..... here is a sampling of the code that returns from "apt-get -f install" It should also be noted that it is just these 6 packages only. no other packages have given me this kind of trouble. well i should say as of now. It was just 5, but them i got an update for unity, and now unity-common is added to the trouble makers. which prevents me from further upgrading the actual unity package as this package is a dependancy. Preparing to replace usb-modeswitch-data 20120120-0ubuntu1 (using .../usb-modeswitch-data_20120815-1_all.deb) ... /var/lib/dpkg/info/usb-modeswitch-data.prerm: 4: /var/lib/dpkg/info/usb-modeswitch-data.prerm: dpkg-maintscript-helper: Input/output error dpkg: warning: subprocess old pre-removal script returned error exit status 2 dpkg: trying script from the new package instead ... /var/lib/dpkg/tmp.ci/prerm: 4: /var/lib/dpkg/tmp.ci/prerm: dpkg-maintscript-helper: Input/output error dpkg: error processing /var/cache/apt/archives/usb-modeswitch-data_20120815-1_all.deb (--unpack): subprocess new pre-removal script returned error exit status 2 /var/lib/dpkg/info/usb-modeswitch-data.postinst: 7: /var/lib/dpkg/info/usb-modeswitch-data.postinst: dpkg-maintscript-helper: Input/output error dpkg: error while cleaning up: subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: /var/cache/apt/archives/network-manager_0.9.6.0-0ubuntu7_i386.deb /var/cache/apt/archives/pcmciautils_018-8_i386.deb /var/cache/apt/archives/unity-common_6.10.0-0ubuntu2_all.deb /var/cache/apt/archives/whoopsie_0.2.7_i386.deb /var/cache/apt/archives/usb-modeswitch_1.2.3+repack0-1ubuntu3_i386.deb /var/cache/apt/archives/usb-modeswitch-data_20120815-1_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1) I would also like to note i have cleaned apt cashe both through the terminal and manualy, i have tried installing them manually through dpkg from both the /var/cache/apt/archives/ location and from my own manually downloaded .deb files. i have tried using dpkg-reconfigure and i have used bleachbit to clean my system. I have also tested both my HDD and memory and found no significant errors to lead to the input/output errors. Quite frankly i am just out of options and have grown tired of trying to google a solution to this mess but still do not wish to pursue backing up settings and reinstalling the system. Any help would be appreciated. I am only interested in answers, please leave your feeling towards grammar, punctuation, and bias towards how a "post should look" at the door. If you dont have something to contribute towards solving my problem then you are just doing nothing but contributing to it. Thank you.

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• Cannot restart Ubuntu after replacing Unity with Gnome and purging lightdm

  - by OtagoHarbour

  I am running Ubuntu 11.10. I used the directions here to replace Unity with Gnome. It seemed to work fine until the end of step 2 when I rebooted the computer. When I chose the default option, I just got a black screen. When I choose the restore option and then "Restore normal boot" I get Starting load fallback graphics devices [fail] Starting GNOME Display Manager [ok] Starting Userspace bootsplash [ok] Stopping GNOME Display Manager [ok] Stopping Userspace bootsplash [ok] Starting web server apach22 [fail] (among a lot of OKs) It finally gets to Stopping System V runlevel compatibility [ok] where it hangs. I left it overnight and just had a blank screen when I checked it in the morning. I can "Drop to root shell prompt" and "Drop to root shell prompt with networking". I did see here that one should be able to fix the problem by choosing remount and then doing apt-get install lightdm I tried this as root shell with and without networking and got the message Err http://us.archive.ubuntu.com/ubuntu/ oneric-updates/main lightdm i386 1.0.6-0ubuntu1.7 Could not resolve 'us.archive.ubuntu.com/ubuntu' What is the best way to resolve this problem? Thanks, Peter.

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• USB gets disabled when i boot in linux (ubuntu 3.5.7)

  - by Gaurav Vyas

  I have connected USB keyboard & mouse to core i7 intel processor.When i boot my system in ubuntu with kernel 3.2.21 it runs properly i.e usb keyboard & usb mouse works satisfactorily. ISSUE When i boot my system in linux(ubuntu 3.5.7) USB keyboard & usb Mouse stops working.i have to boot my system by pressing "e" and then "Enter" i.e it directly links with the hardware.Mouse doesnt get power i.e LED under my optical mouse doesnt glow. kindly help me.

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• Is it possible to print to a Brother MFC-490CW that is conected to a LAN

  - by Johan Poelsma

  I have a Brother MFC-490CW printer that is connected to my LAN (wireless) and on which I can print with fine from Windows. From Ubuntu however, it does not seem to be possible. I downloaded and installed cups and lpd drivers from the Brother site and installed them. I get a Brother printer that says it is connected via USB. If I search for a network printer, my printer is shown. If I select it and select the correct driver, I can submit test pages. These pages are however not printed. What could be wrong. Should it really be that much harder then it is on Windows?

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• Why is the top menu-bar not accessable when previewing open windows of an application?

  - by coversnail

  If I have more than one window of the same application running then clicking its icon in the launcher displays a preview of that application's open windows, When this preview is activated I can't click on any of the icons in the Ubuntu menu-bar/panel/top bar (although hovering over them does highlight the icons). It seems odd that you can highlight the icons but pressing them has no effect. Is this behaviour normal, a bug, or a slight design flaw? I only noticed because I wanted to shut down when previewing the open windows and couldn't click on the panel power icon.

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• How do I take an image/backup of Ubuntu partition and restore to VirtualBox VM

  - by whizkid

  I have Ubuntu 10.04 installed on an older hard disk. I recently bought a new disk and already installed Windows 7. I dont want to use the older disk anymore, and I would like to keep on using Ubuntu in a virtual machine on the new disk(to avoid the possible mess-ups of dual boot and I found VirtualBox is the best free tool for this). I wish to keep the exact same data\programs\configurations\settings I had been using in Ubuntu for so long, and avoid the tedious part of having to reconfigure so many things. How do I backup\restore Ubuntu to another disk? I would prefer a free tool to do the backup\restore.

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• How reliable is the battery data in ubuntu the power statistics?

  - by nbubis

  Right now the power statistics show that: Energy when full: 25.5 Wh Energy (design): 93.2 Wh And indeed the battery doesn't seem to be lasting as long as it used too. My question: Is this data reliable? Does it really indicate that I should replace the battery, or could it be the charger, laptop, or OS that is stopping the battery from fully charging? Is any way of validating the battery is indeed to blame? I'd like to be sure before shelling out 90$ for a new battery. (If it helps, the battery is a 3 year old dell 9 cell rated at 90 Wh).

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• How to add user to other filesystem

  - by chris varnz

  I'm trying to work out how to add a user to a separate filesystem, as described here, specifically point 5: Add a local user and password for the user, then add the user to the adm and sudo groups. I've read around chroot, but I don't believe this will work as the default command to run is /bin/bash, which would require the target fs to be binary compatible. In this case, the target fs is armel so isn't compatible.

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• Is there an alternative to the skype service?

  - by Moonwalker

  On ubuntu 13.04 Skype segfaults constantly (I've read a couple of threads about fixing the issue and it is kind of works now expect it segfaults every time chat message comes in) so I'm thinking it is time to find it a replacement. Which one should I choose? Ok, I've seen previous post, yet only one answer in it highlights some alternatives. Also I want no the alternative skype client, but the whole ecosystem. The one alternative presented ooVoo does not support linux and other goober shows unresolved dependency: libglew1.5

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• Best solution for a team home server

  - by aliasbody

  I created a home server with Ubuntu 12.04 Server (using an old Netbook with an Atom CPU and 512Mb). The idea is just to be used for a small team (maximum 10 persons) that will have constant access by SSH to the main projects and could add features with Git, and will, as well, have their own directory (with VirtualHost configured) for their own personal projects. Everything is configured and running, but my question is : What is the best solution here for everyone to work? It is to have them on the http group and then all have access as normal users to the /var/www folder (that also contains GitWeb and Drupal), or would be to create a new user named after the project (as an example) where only those with the password could have access to work (configured with VirtualHost). Notice: The idea is to have 1 person responsible of the server directly (since he is the one who is hosting it), 2 more people that will have access to the root from their home in order to configure anything from their home, plus anyone else that joins the group without any root access, but just the necessary access to create personal works and work with Git.

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• Why won't my install on Macbook work?

  - by Wyatt

  I am trying to install Ubuntu 12.04 on my Macbook. The CD drive is broken, so I am going from a USB flash drive I created. I can get it to "Try Ubuntu" perfectly fine, as a matter of fact I'm using it right now. However, I really want to install. Everything is partitioned, rEFIt is installed. I run the installer and I follow the guide at Apple Intel Installation I get to the install part of the installer, and after running it ends with a fatal grub error. Anyone know how to get past this? I feel like it has something to do with the fact that I don't get the last dialog box of the installer with the "advanced" tab used in the guide. Any help is greatly appreciated!

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• cannot boot Ubuntu after removing packages?

  - by Ayman

  I have problem now with booting into Ubuntu because I removed some packages from package manager and its dependencies by mistake. After I saw desktop removing applications one by one and the theme starting to disappear. After I tried to restart the login, I tried to fix it usinh recovery mode but it's not working. I am sure there are important packages removed, the problem is that I have no backup for my files .. Also, I need my firefox stored passwords. , I tried to boot to Ubuntu live CD but files encrypted in home folder and no access to it !! is there away to access it ?

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• Font corruption Ubuntu 12.04 Mirosoft Office 2007 / Google earth & Adobe

  - by oneofthemany

  When using MS office 2007 applications I get lines going through text fields on excel spreadsheets and also when I open or save any MS Office document. I am using crossover to run office but I'm also using ttf-mscorefonts for Adobe and Google earth. It appears that sense I upgraded to 12.04 from 11.10 the ms fonts clash. Because if I purge ttf all is OK on MS Office but then Adobe and Google are unreadable Any ideas? Thanks Sean

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• Click and Drag from Clickpad stops working after a while 12.04

  - by Jason O'Neil

  I've got a Samsung Notebook (NP-QX412-S01AU) with a touchpad / clickpad. I'm running 12.04 Precise. When I first log into my computer, the touchpad behaves exactly as expected and desired. The longer I stay logged in, it slowly degrades. I'll try describe it. There are 3 ways of "dragging" on this clickpad: (Physical) click and hold with one finger, and drag around while still holding it down. All with one finger. (Physical) Click and hold with one finger, then with another finger drag around to move cursor. Double tap (not a physical click) and on the second tap, hold and drag. I most naturally use option 1, but here's how it works: When I first turn on, options 1, 2 and 3 all work. After a while, only options 2 and 3 work. Later still, only option 3 works. Restarting X causes all 3 to work again. I've compared the output of "synclient" in each of the states, and there was no difference. Anybody know what to look at? Or at the very least, a command I can run to "restart" the mouse driver without restarting X?

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• How do I force folder view sort order to not ignore special characters?

  - by Jason Hartley

  I have many folders in my home directory that have names that begin with special characters such as _OLD_500GB_HD or !FolderIWantToSeeAtTheTop, but for some reason these folders are sorted according to their first alphanumeric character rather than the leading special character. So how can I force the folder to not ignore the special character, or how else can I make the sort view organize certain folders at the top or bottom of the sort? Thanks.

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• What is the logic behind Ubuntu's messy installation process?

  - by Swaahaa

  Before you get into the conclusion that I want to " DISCUSS " this question, I would like stop you with whole respect and state that- I want A Clear Cut Answer for this question. Ubuntu is such an awesome Operating System. Why do the user dread with fear before installing each and every application. I mean why not a platform in Ubuntu which JUST INSTALLS ANYTHING. I am happy when after a lot of SUDOS, TERMINALS and this and that I INSTALL something. But what is the logic behind such a mess.

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• Howto have thunderbird/lightning open ics files

  - by berkes

  Some websites offer .ics files, calendar files. I would like thunrbird to open these with Lightning so it can add the events in the ics-file to its calendar. When I use /usr/bin/thunderbird to open the file with, it starts a new message with the ics file attached. I could download the file, then import it from lightning, But I rather have lightning just open the file. Is there a commandline-option for this? Some wrapper-script maybe? Should I change something in firefox?

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• Why is wireless slow with Atheros AR9285?

  - by Luke

  I know there are many posts like this, however none of the fixes I have found have worked. I had the issue on 11.04, and after having no luck fixing it decided to try 12.04 however this has not fixed the problem. I'm using a Lenovo IdeaPad, the network card is a Atheros Communications AR9285. edit add outputs: sudo iwconfig lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"NETGEAR-PLOW" Mode:Managed Frequency:2.437 GHz Access Point: E0:91:F5:7D:1B:BA Bit Rate=65 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on Link Quality=66/70 Signal level=-44 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:77 Invalid misc:63 Missed beacon:0 eth0 no wireless extensions. lspci -nnk | grep -iA2 net 06:00.0 Network controller [0280]: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01) Subsystem: Lenovo Device [17aa:30a1] Kernel driver in use: ath9k -- 07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02) Subsystem: Lenovo Device [17aa:392e] Kernel driver in use: r8169 Thanks

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• How to hide whitespace indicators in Vim

  - by Exupery

  Vim was showing some whitespace with commas and periods on a red background which I didn't want. After some googling I was able to get rid of the commas and periods by removing list and listchar lines from .vimrc, I was also hoping this would remove the red backgrounds it was putting in these places, but all it did was change that to white (see image). Is it possible to completely remove the whitespace background indicators in Vim? My .vimrc settings can be seen here

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