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• Windows XP Setup Fails to Recognize USB Floppy after formatting AHCI disk

  - by Strahn

  I am attempting to install Windows XP Professional x64 onto a HP EliteBook 8540w. I have downloaded both the latest Intel Rapid Storage Technology drivers and the Intel Storage Matrix drivers that are listed on HPs website and copied the drivers over to a floppy disk (two separate floppies, one for each version of the drivers.) Booting to my WinXP Pro x64 install CD, I go through the F6 process, load the driver and am able to see my HDD, delete, create and format partitions on it. When I go to continue the install, after checking the disk, the system asks me to enter the disk labeled "Intel Rapid Storage Technology" and press enter to continue. Nothing happens at this point when I press enter. This happens if I use the latest drivers or the older drivers. We have created a slipstreamed install CD using nLite that has the AHCI drivers integrated, which installs fine. However, we have identified a number of issues with the system that I believe are side-effects of using nLite for the slipstreaming and I am attempting to verify that. I have researched this issue and found a few examples of others having the same problem, but no solution. The USB floppy is a Lacie branded floppy, connecting it to a working XP workstation shows it to be the Y-E Data USB floppy drive that is supposedly 100% compatible with XP per MS KB 916196.

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• Rails routing to XML/JSON without views gone mad

  - by John Schulze

  I have a mystifying problem. In a very simple Ruby app i have three classes: Drivers, Jobs and Vehicles. All three classes only consist of Id and Name. All three classes have the same #index and #show methods and only render in JSON or XML (this is in fact true for all their CRUD methods, they are identical in everything but name). There are no views. For example: def index @drivers= Driver.all respond_to do |format| format.js { render :json => @drivers} format.xml { render :xml => @drivers} end end def show @driver = Driver.find(params[:id]) respond_to do |format| format.js { render :json => @driver} format.xml { render :xml => @driver} end end The models are similarly minimalistic and only contain: class Driver< ActiveRecord::Base validates_presence_of :name end In routes.rb I have: map.resources :drivers map.resources :jobs map.resources :vehicles map.connect ':controller/:action/:id' map.connect ':controller/:action/:id.:format' I can perform POST/create, GET/index and PUT/update on all three classes and GET/read used to work as well until I installed the "has many polymorphs" ActiveRecord plugin and added to environment.rb: require File.join(File.dirname(__FILE__), 'boot') require 'has_many_polymorphs' require 'active_support' Now for two of the three classes I cannot do a read any more. If i go to localhost:3000/drivers they all list nicely in XML but if i go to localhost:3000/drivers/3 I get an error: Processing DriversController#show (for 127.0.0.1 at 2009-06-11 20:34:03) [GET] Parameters: {"id"=>"3"} [4;36;1mDriver Load (0.0ms)[0m [0;1mSELECT * FROM "drivers" WHERE ("drivers"."id" = 3) [0m ActionView::MissingTemplate (Missing template drivers/show.erb in view path app/views): app/controllers/drivers_controller.rb:14:in `show' ...etc This is followed a by another unexpected error: Processing ApplicationController#show (for 127.0.0.1 at 2009-06-11 21:35:52)[GET] Parameters: {"id"=>"3"} NameError (uninitialized constant ApplicationController::AreaAccessDenied): ...etc What is going on here? Why does the same code work for one class but not the other two? Why is it trying to do a #view on the ApplicationController? I found that if I create a simple HTML view for each of the three classes these work fine. To each class I add: format.html # show.html.erb With this in place, going to localhost:3000/drivers/3 renders out the item in HTML and I get no errors in the log. But if attach .xml to the URL it again fails for two of the classes (with the same error message as before) while one will output XML as expected. Even stranger, on the two failing classes, when adding .js to the URL (to trigger JSON rendering) I get the HTML output instead! Is it possible this has something to do with the "has many polymorphs" plugin? I have heard of people having routing issues after installing it. Removing "has many polymorphs" and "active support" from environment.rb (and rebooting the sever) seems to make no difference whatsoever. Yet my problems started after it was installed. I've spent a number of hours on this problem now and am starting to get a little desperate, Google turns up virtually no information which makes me suspect I must have missed something elementary. Any enlightenment or hint gratefully received! JS

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• What is ODBC?

  According to Microsoft, ODBC is a specification for a database API.  This API is database and operating system agnostic due to the fact that the primary goal of the ODBC API is to be language-independent. Additionally, the open functions of the API are created by the manufactures of DBMS-specific drivers. Developers can use these exposed functions from within their own custom applications so that they can communicate with DBMS through the language-independent drivers. ODBC Advantages Multiple ODBC drivers for each DBSM Example Oracle’s ODBC Driver Merant’s Oracle Driver Microsoft’s Oracle Driver ODBC Drivers are constantly updated for the latest data types ODBC allows for more control when querying ODBC allows for Isolation Levels ODBC Disadvantages ODBC Requires DSN ODBC is the proxy between an application and a database ODBC is dependent on third party drivers ODBC Transaction Isolation Levels are related to and limited by the transaction management capabilities of the data source. Transaction isolation levels:  READ UNCOMMITTED Data is allowed to be read prior to the committing of a transaction.  READ COMMITTED Data is only accessible after a transaction has completed  REPEATABLE READ The same data value is read during the entire transaction  SERIALIZABLE Transactions have no effect on other transactions

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• NVIDIA graphics driver on Macbook Pro 10,1

  - by Boatzart

  I just installed 14.04 over my old 12.04 partition on my Macbook Pro 10,1 (which is dual-booting with OS X) by following the instructions here. The only difference is that I'm using rEFInd instead of rEFIt. The proprietary NVIDIA drivers worked great with 12.04, but now I'm unable to boot into Unity with it in 14.04. Generally, I just get a black screen after the Grub menu, though occasionally I get some kind of panic screen like this, where I see errors like: [drm: __gen6_gt_force_wake_mt_get] *ERROR* Timed out waiting for forcewake old ack to clear. [drm: __gen6_gt_wait_for_thread_c0] *ERROR* GT thread status wait timed out [drm: __intel_ring_setup_status_page] *ERROR* render ring: wait for SyncFlush to complete for TLB invalidation timed out etc. Using the nouveau drivers works fine, but everything feels sluggish so I would really like to get the NVIDIA drivers working. Has anyone successfully gotten the NVIDIA drivers working with the GT-650M Mac Edition?

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• Live CD / Live USB much faster than full install

  - by user29347

  I've observed it on both laptops I own! HP Compaq nx6125 and Ubuntu 11.04 x64 - somewhat solved Lenovo Thinkpad T500 and Ubuntu 11.10 x64 - help needed! I'm still struggling with the Thinkpad to get performance level similar to that of 10 y.o. laptops... All in all a really serious issue with multiple versions of Ubuntu that renders computers with perfectly compatible hardware unusable, as far as out of the box experience is concerned. Troubleshooting resultant issues seems to be a hard case even for users with some experience with installing graphics drivers. EDIT: I can't really post additional details. Two different ubuntu versions, two laptops, two different set of graph. drivers (OS vs ATI prop.) - all with the same symptoms. Also I can't stress enough how massive the performance degradation is compared to a healthy system. For that reason I ask for input from people who may know roughly what are we dealing with here. I can post more details if we were to focus on my current Thinkpad T500. In that case my current system details: Lenovo Thinkpad T500 Ubuntu 11.10 x64 ATI Mobility Radeon HD 3650 (also see the "What I have already tried" section about Intel graphics tested) ATI Catalyst 11.10 drivers OCZ Agility 3 SSD but! same with the default driver for ATI the card same with the prop. driver for the ATI card from Jockey (Additional drivers applet) What I have already tried: 0. Switching to Intel integrated card (Intel GMA 4500M HD) with the default driver - same effects = may indicate not driver related problem but a problem with something of global influence like e.g. nomodeset or other I don't even know about. (What you can read above) ATI Catalyst 11.10 and radeon.modeset=0 boot parameter + disabled Wait for VBlank. Unity 2D Ubuntu 10.04 LTS tested (ubuntu-10.04.3-desktop-i386.iso): Both live USB and installed version blazing fast! (on the default drivers - without even installing the proprietary fglrx drivers). re2 a) seems to give me the only significant results (still poor) - perfect Unity elements performance with the same crawling stuttering/lagging when dragging windows around. re2 b) this happens often http://i17.photobucket.com/albums/b68/Bucic/ubuntuforumsorg/Screenshotat2011-10-28083140.png re2 c) Sometimes I am able to witness a normal performance when dragging a window around but only for a second or two. When I try to shake it longer it starts to lag and it will keep lagging like that with an increased probability of what you see in the sshot in point re2 b). re2 d) I can't establish the radeon.modeset=0 influence though. Once it seems to work be smooth with it, the other time - without it. Really can't tell.

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• How to install Canon MP610 printer on Ubuntu 12.04 x64

  - by Arkadius

  I installed Ubuntu 12.04 x64. Orginal Canon drivers are only for 32-bit version. How can I install this printer in 64-bit version ? Arkadius HERE IS SOLUTION I looked for solution some time and finally found it. First I try to do it by adding repository like it is written here: http://www.iheartubuntu.com/2012/02/install-canon-printer-for-ubuntu-linux.html BUT it did NOT work. Printer was installed but every print JOB goes somewhere ( probably to /dev/null :) ) Also installing sudo apt-get install ia32-libs did NOT worked (it was already installed) Finally I found solution. NOTE I did NOT use orginal Canon drivers for 32-bit. I also removed drivers from repository: ppa:michael-gruz/canon I found solution almost at the end of this thread: http://ubuntuforums.org/showthread.php?t=1967725&page=10 Most important hint was found in Response #97 "Do NOT install any PPA" I did as follows: Removed all copies of my printer Removed Canon drivers from repository ppa:michael-gruz/canon sudo apt-get remove cnijfilter* Added new repository and installed CUPS for Canon: sudo apt-add-repository ppa:robbiew/cups-bjnp sudo apt-get update sudo apt-get install cups-bjnp Installed Gutenprint: sudo apt-get install printer-driver-gutenprint Restarted CUPS: sudo restart cups Add myself to group lp: sudo usermod -G lp -a your_user_name Added printer usings steps from link above: Don't install any PPA for the drivers. Click the Cog up in the right-hand corner and select Printers. Turn on the printer and make sure it is connected. When the Printers windows appears, click +Add and wait a few minutes. Your printer should appear within the configuration wizard. Mine did and its an Canon MX330. Click the defaults and continue on. Cups should identify your printer. I saw a few other models in the list. I was able to successfully print a test page afterwards. I hope this will also help someone else. Arkadius .

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• Nvidia driver cannot be installed with jockey for old hardware

  - by Alen

  I have a GeForce FX/5-series card and I cannot install the driver using the Additional Drivers (jokey) tool. I just installed Ubuntu 12.04 and installed all nvidia drivers, but my drivers are not activated, when I open Nvidia settings manager I get the following message: You do not appear to be using the NVIDIA X driver. Please edit your X configuration file (just run nvidia-xconfig as root), and restart the X server. Can you help me with this?

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• obiee 10g teradata Solaris deployment

  - by user554629

  I have 3-4 years worth of notes on proper Teradata deployment across multiple operating systems.   The topic that is too large to cover succinctly in a blog entry.   I'm trying something new:  document a specific situation, consolidate the facts, document diagnostic procedures and then clone the structure to cover other obiee deployments (11g and other operating systems). Until the icon below is removed, this blog entry may be revised frequently.  No construction between June 6th through June 25th. Getting started obiee 10g certification:  pg 24-25 Teradata V2R5.1.x - V2R6.2, Client 13.10, certified 10.1.3.4.1obiee 10g documentation: Deployment Guide, Server Administration, Install/Config Guideobiee overview: teradata connectivity downloads: ( requires registration )solaris odbc drivers: sparc 13.10:  Choose 13.10.00.04  ( ReadMe ) sparc 14.00: probably would work, but not certified by Oracle on 10g I assume you have obiee 10.1.3.4.1 installed; 10.1.3.4.2 would be a better choice. Teradata odbc install requires root for Solaris pkgadd Only 1 version of Teradata odbc can be installed.symbolic links to the current version are created in /usr/lib at install obiee implementation background database access has two types of implementation:  native and odbcnative drivers use DB vendor client interfaces for accessodbc drivers are provided by the DB vendor for DB accessTeradata is an odbc interface Database. odbc drivers require an ODBC Driver Managerobiee uses Merant Data Direct driver manager obiee servers communicate with one another using odbc.The internal odbc driver is implemented by the obiee team and requires Merant Driver Manager. Teradata supplies a Driver Manager, which is built by Merant, but should not be used in obiee. The nqsserver shared library deployment looks like this  OBIEE Server<->DataDirect Manager<->Teradata Driver<->Teradata Database nqsserver startup $ cd $BI/setup$ . ./sa-init64.sh$ run-sa.sh autorestart64 The following files are referenced from setup:  .variant.sh  user.sh  NQSConfig.INI  DBFeatures.INI  $ODBCINI ( odbc.ini )  sqlnet.ora How does nqsserver connect to Teradata? A teradata DSN is created in the RPD. ( TD71 )setup/odbc.ini contains: [ODBC Data Sources] TD71=tdata.so[TD71]Driver=/opt/tdodbc/odbc/drivers/tdata.soDescription=Teradata V7.1.0DBCName=###.##.##.### LastUser=Username=northwindPassword=northwindDatabase=DefaultDatabase=northwind setup/user.sh contains LIBPATH\=/opt/tdicu/lib_64\:/usr/odbc/lib\:/usr/odbc/drivers\:/usr/lpp/tdodbc/odbc/drivers\:$LIBPATHexport LIBPATH   setup/.variant.sh contains if [ "$ANA_SERVER_64" = "1" ]; then  ANA_BIN_DIR=${SAROOTDIR}/server/Bin64  ANA_WEB_DIR=${SAROOTDIR}/web/bin64  ANA_ODBC_DIR=${SAROOTDIR}/odbc/lib64         setup/sa-run.sh  contains . ${ANA_INSTALL_DIR}/setup/.variant.sh. ${ANA_INSTALL_DIR}/setup/user.sh logfile="${SAROOTDIR}/server/Log/nqsserver.out.log"${ANA_BIN_DIR}/nqsserver -quiet >> ${logfile} 2>&1 &   nqsserver is running: nqsserver produces $BI/server/nqsserver.logAt startup, the native database drivers connect and record DB versions.tdata.so is not loaded until a Teradata DB connection is attempted.    Teradata odbc client installation Accept all the defaults for pkgadd.   Install in /opt. $ mkdir odbc$ cd odbc$ gzip -dc ../tdodbc__solaris_sparc.13.10.00.04.tar.gz | tar -xf - $ sudo su# pkgadd -d . TeraGSS# pkgadd -d . tdicu1310# pkgadd -d . tdodbc1310   Directory Notes: /opt/teradata/client/13.10/odbc_64/lib/tdata.soThe 64-bit obiee library loaded by nqsserver. /opt/teradata/client/13.10/odbc_64/lib is not needed in LD_LIBRARY_PATH /opt/teradata/client/13.10/tdicu/lib64is needed in LD_LIBRARY_PATH /usr/odbc should not be referenced;  it is a link to 32-bit libraries LD_LIBRARY_PATH_64 should not be used.     Useful bash functions and aliases export SAROOTDIR=/export/home/dw_adm/OracleBIexport TERA_HOME=/opt/teradata/client/13.10 export ORACLE_HOME=/export/home/oracle/product/10.2.0/clientexport ODBCINI=$SAROOTDIR/setup/odbc.iniexport TD_ICU_DATA=$TERA_HOME/tdicu/lib64alias cds="alias | grep '^alias cd' | sed 's/^alias //' | sort"alias cdtd="cd $TERA_HOME; ls" alias cdtdodbc="cd $TERA_HOME/odbc_64; ls -l"alias cdtdicu="cd $TERA_HOME/tdicu/lib64; ls -l"alias cdbi="cd $SAROOTDIR; ls"alias cdbiodbc="cd $SAROOTDIR/odbc; ls -l"alias cdsetup="cd $SAROOTDIR/setup; ls -ltr"alias cdsvr="cd $SAROOTDIR/server; ls"alias cdrep="cd $SAROOTDIR/server/Repository; ls -ltr"alias cdsvrcfg="cd $SAROOTDIR/server/Config; ls -ltr"alias cdsvrlog="cd $SAROOTDIR/server/Log; ls -ltr"alias cdweb="cd $SAROOTDIR/web; ls"alias cdwebconfig="cd $SAROOTDIR/web/config; ls -ltr"alias cdoci="cd $ORACLE_HOME; ls"pkgfiles() { pkgchk -l $1 | awk  '/^Pathname/ {print $2}'; }pkgfind()  { pkginfo | egrep -i $1 ; } Examples: $ pkgfind td$ pkgfiles tdodbc1310 | grep 64$ cds$ cdtdodbc$ cdsetup$ cdsvrlog$ cdweblog

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• 12.04.1 no audio through HDMI

  - by JoJo

  having a bit of an issue with getting audio to go through HDMI. Here are the base specs: OS: Ubuntu Desktop 12.04.1 x64 CPU: AMD A10-5800K 3.8G 4M FM2 R Mobo: MSI FM2-A75MA-E35 OS: Ubuntu 12.04.1 LTS Vid Card: (integrated on CPU) AMD Radeon HD 7660D HDMI sound works fine under Win7 (after mobo and vid drivers are installed), so it's not physically broken. Audio through the normal headphone jacks works fine under Ubuntu. Looking at the audio panel, there is no HDMI output at all. aplay -l also reports only: card 0: Generic [HD-Audio Generic], device 0: ALC887-VD Analog [ALC887-VD Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 In additional drivers there are two versions: ATI/AMD PROPRIETARY FGLRX GRAPHICS DRIVER ATI/AMD PROPRIETARY FGLRX GRAPHICS DRIVER (post-release update) The first installs, but problem persists. I do get more resolutions to pick from. Second version does not, reporting it failed installation and to find details at: /var/log/jockey.log Looked at the log, and it's insanely long, if necessary I can get it to you guys. Did more research and some had luck by manually installing the drivers, so tried to give that a shot by following this: https://help.ubuntu.com/community/BinaryDriverHowto/ATI#Manually_installing_Catalyst_12.6 starting at 3.1 Manually installing Catalyst 12.6. I immediately had 2 issues, (1) the AMD website does not provide any drivers for Linux, and (2) the following command did not work: sudo sh amd-driver-installer-12-6-x86.x86_64.run --buildpkg Ubuntu/precise sh: 0: Can't open amd-driver-installer-12-6-x86.x86_64.run Some other posts stated to update "alsa-drivers", but that also did not work as install command for the new version of them did not work. I forget the exact issue, but similar to above, cannot open / cannot find. Any help would be greatly appreciated!

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• How do I get a Canon LBP 2900 printer working?

  - by elektron

  i am unable to set up my canon lbp2900 printer on ubuntu12.04 64 bit i aliened the 64 bit rpm drivers and then installed the drivers (version 2.40) and followed the procedure in the canon guide ( however i changed fifo path to //localhost:59787 (somebody suggested) instead of 59687 (as suggested by canon guide) ) intially i got the message pstocapt failed .. the drivers had put the pstocapt and backend/ccp in the lib64 directory instead of the lib directory ... i copied that to the aproprite directory under lib but still i get the error "ccp send_data error exit " i also tried with fifo path //localhost:59687 i also tried the Radu script but the drivers the script uses are version 1.90 and has conflicting packages

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• How can I solve display glitches and poor performance with ATI fglrx driver on my ThinkPad X100e?

  - by rewbs

  I noticed that video performance on my Thinkpad X100e was very poor compared to Windows 7, so I installed the ATI fglrx proprietary drivers by using the "Additional Drivers" dialogue box. The system has an ATI Radeon Mobility HD 3200 chip. The result of installing the drivers is pretty devastatingly negative, with symptoms such as skewed content in windows, browser tabs and text boxes failing to refresh when their content changes. In fact, please excuse typos in this post, because I can't really see what I am typing. :) I also notice that HD video playback performance is no better - perhaps even worse - than prior to installing the drivers. Example of what I see: Here's the output of fglrxinfo: display: :0.0 screen: 0 OpenGL vendor string: ATI Technologies Inc. OpenGL renderer string: ATI Radeon HD 3200 Graphics OpenGL version string: 3.3.10237 Compatibility Profile Context Output of lspci | grep -i vga: 01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] I'm on Ubuntu 10.10 with kernel 2.6.35-22-generic-pae. What can I try? Many thanks, -R

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• Dell Vostro 2420 upgrade to 12.04.1 no wifi

  - by Kane

  I have installed 12.04 on a dell vostro 2420 (previously 11.10) and wifi is gone now but wired network remains. I've reviewed the other questions and tried some stuff but no luck yet. The following is the process so far so hopefully someone can help: After installing 12.04 using the additional drivers utility did not bring up any proprietary drivers and using synaptic on installation then reinstallation of bcmwl-kernel-source and b43-fwcutter does not help bring up any drivers either (tried rebooting after as well) I have made sure in the bios that the wlan is turned on, and it appears the laptop does not have a wireless hardware switch, only the keyboard function shortcut which turns bluetooth on and off on the taskbar but there is no lightup of the wireless function on the laptop itself. Dell does not appear to have any drivers for ubuntu and google does not appear to be much help :( Thanks in advance!

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• NVIDIA proprietary driver logging me to console instead of GUI

  - by Woozie

  Firstly i want to apologise for any mistakes, English is not my native language. My problem is I can't get NVIDIA proprietary drivers to work. I tried to install it on Ubuntu 12.04.1 32 and 64 bits, Ubuntu 12.10 Beta 2, Linux Mint 13 Cinnamon 64 bits and openSUSE 12.2 64 bits and the error code and symptoms (logging to tty1 instead of GUI logging, low-res bootscreen) are the same for all of these distros. Right, I didn't tell what's the error code. It appears on sudo startx. NVIDIA: could not open the device file /dev/nvidia0 (Input/output error). I know that's the common problem, but I tried to blacklist or even remove the noveau drivers, install NVIDIA driver from repo/from official script/in "Additional drivers", editing xorg.conf and using Xorg -configurate and nvidia-xconfig, actualizing the kernel and entire distro and many, many things that I don't remember. But the problem is even better: entire Cinnamon (Mint) is freezing during the work. I found the error code, which appears during the freeze: Oct 1 20:57:17 WoozieLaptop kernel: [ 308.120176] [drm] nouveau 0000:01:00.0: PFIFO_CACHE_ERROR - Ch 4/1 Mthd 0z0060 Data 0xbcef0201 My Xorg.0.log is here. It was made on Ubuntu 12.04.1 after installing NVIDIA drivers (obviously). inxi -G from Mint: Graphics: Card: NVIDIA GT216 [GeForce GT 240M] X.org: 1.11.3 drivers: (unloaded: nvidia) FAILED: nouveau,vesa,fbdev tty size: 80x25 Advanced Data: N/A for root out of X lspci -k | grep -A2 VGA from Mint: 01:00.0 VGA compatible controller: NVIDIA Corporation GT216 [GeForce GT 240M] (rev a2) Subsystem: Lenovo Device 38ff Kernel driver in use: nvidia My hardware is: Lenovo IdeaPad Y550 Intel C2D T6600 NVIDIA GeForce GT 240M 4 GB of RAM Any help will be appreciated. This problem totally disabled my laptop from daily using. Cheers, Woozie

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• disk space error, cant use internet

  - by James

  after trying to install drivers using sudo apt-get update && sudo apt-get upgrade, im faced with a message saying no space left on device, i ran disk usage analyzer as root and there was three folders namely, main volume, home folder, and my 116gb hard drive (which is practically empty) yet both other folders are full, which is stopping me installing drivers because of space, how do i get ubuntu to use this space on my hard drive? its causing problems because i cant gain access to the internet as i cant download drivers when i havnt got enough space, this happens every time i try it

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• Writing Device Drivers for Microcontrollers, where to define IO Port pins?

  - by volting

  I always seem to encounter this dilemma when writing low level code for MCU's. I never know where to declare pin definitions so as to make the code as reusable as possible. In this case Im writing a driver to interface an 8051 to a MCP4922 12bit serial DAC. Im unsure how/where I should declare the pin definitions for The CS(chip select) and LDAC(data latch) for the DAC. At the moment there declared in the header file for the driver. Iv done a lot of research trying to figure out the best approach but havent really found anything. Im basically want to know what the best practices... if there are some books worth reading or online information, examples etc, any recommendations would be welcome. Just a snippet of the driver so you get the idea /** @brief This function is used to write a 16bit data word to DAC B -12 data bit plus 4 configuration bits @param dac_data A 12bit word @param ip_buf_unbuf_select Input Buffered/unbuffered select bit. Buffered = 1; Unbuffered = 0 @param gain_select Output Gain Selection bit. 1 = 1x (VOUT = VREF * D/4096). 0 =2x (VOUT = 2 * VREF * D/4096) */ void MCP4922_DAC_B_TX_word(unsigned short int dac_data, bit ip_buf_unbuf_select, bit gain_select) { unsigned char low_byte=0, high_byte=0; CS = 0; /**Select the chip*/ high_byte |= ((0x01 << 7) | (0x01 << 4)); /**Set bit to select DAC A and Set SHDN bit high for DAC A active operation*/ if(ip_buf_unbuf_select) high_byte |= (0x01 << 6); if(gain_select) high_byte |= (0x01 << 5); high_byte |= ((dac_data >> 8) & 0x0F); low_byte |= dac_data; SPI_master_byte(high_byte); SPI_master_byte(low_byte); CS = 1; LDAC = 0; /**Latch the Data*/ LDAC = 1; }

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• Microsoft IntelliPoint

  Upgrade your IntelliMouse with the latest IntelliPoint drivers

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• Oracle VM Virtualbox 4.0 extension packs

  - by wim.coekaerts

  Some people have asked what this new extension pack is in Oracle VM Virtualbox 4.0 and how it's different from 3.2 and earlier releases. The extension pack is a restructuring of how Oracle VM VirtualBox is installed. Please take a look at http://virtualbox.org and read up on what the product install looked like prior to 4.0, you'll see the following : There were 2 versions to download : - Oracle VM VirtualBox (open source edition) OSE - download of the source tarball with a GPL license + compile needed to run. - Oracle VM VirtualBox PUEL (personal use/eval license) - download of an installable binary with a number of additional non-gpl license drivers, usb2, sata, pxe boot for e1000, vrdp server etc., all built in to the install. This contained the OSE edition + additional drivers with the installer. Customers could purchase an enterprise software license for the latter version. To make it easier to build and release additional drivers, they have been separated out and are now installed through an "extension pack" starting with Oracle VirtualBox version 4. This extension pack is still licensed the same way as in every prior version, via a PUEL license or with the ability to purchase a commercial license. It is now also possible for other companies or users that want to add extensions to do so by creating a similar extension pack -- and there's no need to do a new release of the entire product to do so. So it's a more flexible structure for installing VirtualBox and drivers and allows for more modular additions. The source code of Oracle VM Virtualbox is, of course, still available just like in 3.x, for 4.0. Like 3.x, not for the additional drivers which are now in the extension pack.

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• permission denied to move files

  - by James

  i want to clear space on my computer in order to download drivers for my internet, so i tried moving files to a different location, unfortunately i dont have permission to do this, how do i change this, i should point out that i am not logged in, i think im a guest or something because if i log in i can not gain access to the internet to download the drivers that i need, so im using the cd and using the try ubunt feature to try achieve downloading the drivers. this is very frustrating for me as im new and have not got a clue how to do this

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• Nvidia driver overscan issue second monitor via dvi-d cable

  - by benmichael

  Ok, I know that I have a bit of a bizarre setup, but here goes. I have an old laptop, HP Pavilion 6000. The graphics card in there is a GeForce 7150M. The monitor connection is an old 18pin. The external monitor I use is a Samsung SyncMaster 2333. Don't ask me why, but this monitor only has a dvi-d connection (yes, i have searched it). So I have the monitor plugged into the laptop. If I use any of the Nvidia propriety drivers and try to set the resolution up to 1920x1080 (the monitor's native resolution), I get a massive overscan issue. Over the years I have tried to get this to work, tinkering with my xorg.conf to death. I have also tried this on every Ubuntu since 10.04, on all the corresponding LUbuntus, and on all the Linux Mints since Lisa. Exact same issue. I have even tried it in WinDoze and it works perfectly there (although I did get the error once, but was unable to reproduce it). Using the Open Source drivers it works perfectly iff I switch off the laptop monitor (this makes no difference with the Nvidia drivers). I would have happily gone on using the Open Source drivers, except that since upgrading to LUbuntu 12.10, the Open Source drivers make my monitor completely hazy and have the same overscan issue until I (through the haze, only because I know where things are) go to the monitor settings, activate the laptop's monitor, then deactivate it, and suddenly it comes right. I have to do this every time. So I have to find a way to fix one of them, so I may as well tackle the propriety drivers, hence this overlong question. Amidst other things, I have tried the nvidia-settings, but because it is connected to an 18pin, it detects the monitor as a vga monitor and does not give me overscan correction options. I have tried custom modlines (although there are always more of those try), I have tried using xrandr, and I have tried all the FlatPanelOptions. What I have not tried is a Gentoo build, as I don't have time any more to do that installation, but up to about three years ago when I ran Gentoo exclusively I did not have this issue. Below is an link to an image with a red highlight around the portion of the screen visible to me, the numbers around it are the number of pixels which are cut off. This does seem to drift a few pixels every now and then. Thanks in advance. Nvidia driver issue image

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• Second Monitor Detected, but not receiving a signal after upgrading to 12.04

  - by user62458

  After I upgraded to 12.04, my second monitor is detected (in display settings), but will not power on. I have scoured the Internet and forums for a solution and I can't find anything. I have found a couple people with the same problem, but never a solution for it. I am no expert, but I'm certainly not a noob. My computer uses AMD Radeon 6250 graphics, but I do NOT want to use the proprietary graphics drivers. They refuse to work properly with my second monitor (they ATI drivers will only mirror screens, and I've done everything to try to fix it, and I DON't want mirrored screens) Not to mention that the default open-source video drivers seem to work much better than the proprietary anyway! Again, Ubuntu's default video drivers work fine, and they even DETECT the second monitor (Dell 19'). I can drag stuff off the screen and put it on the 'space' of the second monitor and even a screen-shot shows that there are two monitors active; but the monitor is OFF. It will not power on. It goes into 'power-save' mode because it is not receiving a signal. For some reason it is not getting the signal to power on, even though Ubuntu thinks the monitor is working properly. I had this working fine on my Sony VAIO yesterday (with Radeon graphics/default Ubuntu video drivers). I upgraded to a Samsung Series 3 and now I have this issue. I can't for the life of me figure out why the monitor is connected, detected and I have screen space for the monitor, but the screen won't turn on! XRANDR Output: Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 VGA-0 connected (normal left inverted right x axis y axis) 1440x900 59.9 + 75.0 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 72.8 75.0 66.7 60.0 720x400 70.1 LVDS connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm 1366x768 60.1*+ 1280x720 59.9 1152x768 59.8 1024x768 59.9 800x600 59.9 848x480 59.7 720x480 59.7 640x480 59.4 HDMI-0 disconnected (normal left inverted right x axis y axis)

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• How do make changes in drivers/etc/hosts take affect instantly with IE?

  - by wamp

  Firefox will notice this change immediately, but IE will need several minutes to take affect. Is there somehow I can make it work faster?

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• Is it easier to write filesystem drivers in userspace than in kernel space?

  - by Jack

  I will use the Linux NTFS driver as an example. The Linux kernel NTFS driver only has very limited write support in the kernel, and after 5 years it is still considered experimental. The same development team creates the ntfsmount userspace driver, which has almost perfect write support. Likewise, the NTFS-3G project which is written by a different team also has almost perfect write support. Why has the kernel drive taken so much longer? Is it much harder to develop for? Saying that there already exists a decent userspace application is not a reason why the kernel driver is not compelte. NOTE: Do not migrate this to superuser.com. I want a programing heavy answer, from a programming perspective, not a practical use answer. If the question is not appropriate for SO, please advise me as to why so I can edit it so it is.

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• How do I get a Dell Latitude e6420 working?

  - by David_G

  I've just installed Ubuntu 12.04 (64-bit) on a brand new Dell Latitude e6420, and I'm having a few problems. This laptop has an Optimus (?) setup - i.e. integrated gfx and an Nvidia Quadro NVS 4200M. First problem - I ran setup, etc, and discovered that I can only run unity2d - If I try and login with unity3d, it just defaults to 2d. This is with nvidia-current installed (302.07). Note also that I can't run nvidia-settings ("You do not appear to be using the NVIDIA X driver."), and there is no additional drivers found ("No proprietary drivers are in use on this system"). I tried to troubleshoot this, and removed nvidia, leaving (I guess) just Nouveau drivers - In that case, unity3d did work, but I was stuck with the open source Nouveau drivers powering the integrated graphics. So, obviously, I want to run unity3d, and be using the more powerful Nvidia graphics card. I've tried a bit of tinkering around, but I'm not sure the best way to proceed, or perhaps more importantly, I'm not sure of what the best final solution might be. I've heard about bumblebee - but frankly, I would prefer to have the proprietary Nvidia drivers working properly. Any help would be much appreciated!

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• How can I solve display glitches and poor performance with ATI fglrx driver on my ThinkPad X100e?

  - by rewbs

  Hi all, I noticed that video performance on my Thinkpad X100e was very poor compared to Windows 7, so I installed the ATI fglrx proprietary drivers by using the "Additional Drivers" dialogue box. The system has an ATI Radeon Mobility HD 3200 chip. The result of installing the drivers is pretty devastatingly negative, with symptoms such as skewed content in windows, browser tabs and text boxes failing to refresh when their content changes. In fact, please excuse typos in this post, because I can't really see what I am typing. :) I also notice that HD video playback performance is no better - perhaps even worse - than prior to installing the drivers. Example of what I see: Here's the output of fglrxinfo: display: :0.0 screen: 0 OpenGL vendor string: ATI Technologies Inc. OpenGL renderer string: ATI Radeon HD 3200 Graphics OpenGL version string: 3.3.10237 Compatibility Profile Context Output of lspci | grep -i vga: 01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] I'm on Ubuntu 10.10 with kernel 2.6.35-22-generic-pae. What can I try? Many thanks, -R

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• problem with grafics on ubuntu 12.10

  - by kargeo

  please help I just install 12.10 x86_64 to my new computer amd fx8120 cpu ati hd 7770 msi 990 fxa and I'm facing the following error: 2012-11-17 18:19:04,393 WARNING: /sys/module/fglrx/drivers does not exist, cannot rebind fglrx driver From :additional drivers" can not install the ati drivers From "system settings" "software sources" only the x.org server is working but with problems Compiz works continuously and if I open for example a video the fun is running like crazy The mouse pointer goes slow The windows act strange (flashing, don't open, open slowly etc) What should I do? Thanks

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