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• Sneak Peek: New ASP.NET Validation Summary Control

  Check out this image of our upcoming ASP.NET validation summary control, ASPxValidationSummary: ASPxValidationSummary Benefits This new control helps you summarize validation errors from multiple controls and then displays them in a single block. This allows you to organize screen space more effectively if validation is required for several editors. Error entries can be displayed as a table, bulleted or ordered list. And each entry can be presented as a link that moves focus to the corresponding...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How to negate current window in gnome shell?

  - by k0pernikus

  I dislike that most websites use a black font on white background for their sites, as it gets too tiresome for me to read. Back in the days of 11.04, using Gnome2 with compiz, there actually was a Negative feature that could negate the content of any window, making the background black and the font white. Much easier on the eyes for me. Yet since 11.10, using gnome shell with mutter, I have no idea if there is something alike out there. Hence my question: How do I negate the currently active window in gnome shell? I am not interested in alternative methods, e.g. user styles. I am aware of their existence but I find it much easier to just invert the screen by the hit of a key shortcut. I also want the solution to be application-agnostic. As I also from time to time would want to invert libre-office or some other glaringly white application.

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• Is the "App" side of Windows 8 practical for programmers?

  - by jt0dd

  I like the tablet-friendliness of Windows 8 Apps, and some of the programming apps seem pretty neat, but there are many aspects that make me think I would have difficulty using this format for an efficient programming environment: Unlike the desktop + multiple windows setup, I can't simply drag my files around from source, to FTP or SFTP file managers, between folders, web applications, and into other apps, etc. I can't switch between apps as fast. This could have different implications with different monitor setups, but it seems like a shaky setup for an agile workflow. The split screen functionality is cool, but it doesn't seem to allow for as much maneuverability as the classic desktop setup. This could just require me getting used to the top-left corner shortcut, but it does bother me that I have to move my mouse all the way up there to see my different windows. These aspects could become relevant in the event that Windows were to move further towards their "app" structure and less towards the Windows 7 style. I'm wondering if anyone has been able to utilize the "App" side of Windows 8 for an efficient programming workflow.

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• Install Apache + PHP on CentOS server

  - by Scott

  Hi everyone, I am trying to use YUM to install Apache and PHP on CentOS but keep getting these errors. Anyone know what's wrong? Thanks! Loading mirror speeds from cached hostfile * c5-testing: dev.centos.org Setting up Install Process Parsing package install arguments Resolving Dependencies --> Running transaction check ---> Package httpd.i386 0:2.2.8-1.el5s2.centos set to be updated --> Finished Dependency Resolution Dependencies Resolved ============================================================================= Package Arch Version Repository Size ============================================================================= Installing: httpd i386 2.2.8-1.el5s2.centos c5-testing 1.0 M Transaction Summary ============================================================================= Install 1 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 1.0 M Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug ERROR with rpm_check_debug vs depsolve: Package perl-libapreq needs perl(Apache::Table), this is not available. Package perl-libapreq needs perl(mod_perl) >= 1.17, this is not available. Package perl-libapreq needs perl(mod_perl) >= 1.17, this is not available. Package apache-devel needs apache = 1.3.41, this is not available. Complete! bash-3.2#

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• Disadvantages of enabling 'Low Fragmentation Heap' LFH on Windows Server 2003?

  - by James Wiseman

  I've been investigating an issue with a production Classic ASP website running on IIS6 which seems indicative of memory fragmentation. One of the suggestions of how to ameliorate this came from Stackoverflow: How can I find why some classic asp pages randomly take a real long time to execute?. It suggested flipping a setting in the site's global.asa file to 'turn on' Low Fragmentation Heap (LFH). The following code (with a registered version of the accompanying DLL) did the trick. Set LFHObj=CreateObject("TURNONLFH.ObjTurnOnLFH") LFHObj.TurnOnLFH() application("TurnOnLFHResult")=CStr(LFHObj.TurnOnLFHResult) (Really the code isn't that important to the question). An author of a linked post reported a seemingly magic resolution to this issue, and, reading around a little more, I discovered that this setting is enabled by default on Windows Server 2008. So, naturally, this left me a little concerned: Why is this setting not enabled by default on 2003, or If it works in 2008 why have Microsoft not issued a patch to enable it by default on 2003? I suspect the answer to the above is the same for both (if there is one). Obviously, we're testing it in a non-production environment, and doing an array of metrics and comparisons to deem if it does help us. But aside from this I'm really just trying to understand if there's any technical reason why we should do this, or if there are any gotchas that we need to be aware of.

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• Upgrade failed, now impossible to restart

  - by Jean Claude Dispaux

  I have an Aspire One with Ubuntu, that I use only when traveling, i.e. seldom. Yesterday I tried to start it, it informed me that I had to install a new release of Ubuntu. The download went fine, then I left it for the night. In the morning I found error messages. I tried to restart, but nothing works any longer. The only backup I have is two USB keys made by the person who installed Ubuntu, that say Recovery Ubuntu 8 and Ubuntu 9.10 respectively. Right now I plugged the "8", selected F12 and instructed to boot from the USB key. It has been running for an hour, the screen still says ubuntu, the USB key flashes red. By the way, I have no precious data on this machine, I do not care about losing data. Please advise on what to do now. Thanks.

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• NEW - Oracle Certifications and Documentation Available for Pre-Acquisition Sun/BEA IdM Products

  - by Irina

  If you have been looking for Oracle certification information or documentation for the pre-Acquisition Sun/BEA Identity Management products, you can now find them at the Certifications Central Hub.Use this Hub if you're looking for Sun Identity Management documentation, certified configurations for Waveset, Identity Analytics, OpenSSO, and more. Scroll down, below the bullets, to the bottom of the table to find: Of course, you can still find a great wealth of certification information for current products at this hub, as in the past. Be sure to check before you install! In case you haven't used this page before, notice that you can get to the documentation, certifications and downloads for IdM products by clicking on "Identity Management" in the leftmost pane. In the new screen, you will see each IdM product, along with tabs for Downloads, Documentation, Community, and Learn More. Let us know if you don't find what you are looking for. Happy Trails.

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• Can't upgrade NVIDIA GeForce 310M display driver on Acer Aspire 5745PG

  - by Emerson

  I've been for days already trying to update my video driver. I have an Acer Aspire 5745PG with a "NVIDIA GeForce 310M" board, and I was trying to run Sony Vegas video editor with Boris Continunn plugins. It happened that some of the plugins, like BCC Text Extrude wouldn't work, showing the message "Insufficient depth resolution to run Blue". I then read somewhere that updating the display driver would do the trick. That was when my nightmares started, I lost already good 3 nights trying to sort this out, without success :( The display driver that was before (and that I current have after restoring) was the version 8.16.11.8997. First thing I tried was downloading the 8.17.12.6619 driver directly from Acer, which was shown as the latest version from Acer website: http://support.acer.com/product/default.aspx?modelId=2466 Running it would say "Diver Package Failure - Setup failed to read the required Display Driver to be used with this package" I then tried directly the NVIDIA own driver, which the latest was version 296.10: http://us.download.nvidia.com/Windows/296.10/296.10-notebook-win7-winvista-64bit-international-whql.exe That gave me similar error message :/ So after some researching I found out that some people had the same issue and they had to change the configuration file to allow the installer to recognize this NVIDIA board: http://forums.nvidia.com/index.php?showtopic=222904 That topic said to look for the "Device Instance Id" property of the "NVIDIA GeForce 310M" display , which I couldn't find, instead I found the "Hardware Id", which seemed to be the right one. I followed the instructions and changed the inf file first for the Acer installation, and after for the NVIDIA own driver. It actually managed to go ahead with the installation in both instances, but the only thing I got was a black screen, while the computer still apeared to be running fine. I had to hard reset, and then it would come back with generic vga driver. I could only get my display back using the recovery function. I imagine thousands of this notebook was sold, and it can't have its driver updated?? Could someone help me with this?? Thanks Echo

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• Saving an interface instance into a Bundle

  - by user22241

  All I've have an interface that allows me to switch between different scenes in my Android game. When the home key is pressed, I am saving all of my states (score, sprite positions etc) into a Bundle. When re-launching, I am restoring all my states and all is OK - however, I can't figure out how to save my 'Scene', thus when I return, it always starts at the default screen which is the 'Main Menu'. How would I go about saving my 'Scene' (into a Bundle)? Code import android.view.MotionEvent; public interface Scene{ void render(); void updateLogic(); boolean onTouchEvent(MotionEvent event); } I assume the interface is the relevant piece of code which is why I've posted that snippet. I set my scene like so: ('options' is an object of my Options class which extends MainMenu (Another custom class) which, in turn implements the interface 'Scene') SceneManager.getInstance().setCurrentScene(options); //Current scene is optionscreen

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• Software/hardware to build video streaming server?

  - by Sasha Yanovets

  I am looking for a video streaming server solution, something like online TV server, with ability to make live broadcasts in the internet. What software could you recommend for that? What kind of hardware it should run on, should be there anything special? I am looking for a solution that could be scaled up to at least 1000 simultaneous users online with good resolution of video. I think it is good to have general answer on what direction to choose. But here more details on my specific case: I just looking for a solution almost from scratch. We have some video content that we've produced, but it is not delivered over internet yet. We do not tied to any particular vendor for now. We want to make 24 hours of steaming three 8 hour blocks with change of content every day. We want the ability to make regular live broadcasts. I guess we will need to have several options of streaming quality (low ~56 kb/s mid ~273 kb/s). Some terms just foreign to me (like play-truncation rate), if you could point out what parameters we should avare of, it would be great. Uplink to the internet is to be determined. We plan to start from something and scale up on the way. If you are already have some kind of media streaming server, just describe its configuration here (hardware, OS, software), peak number of concurrent users it serves. I think it could help people approaching this task.

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• No boot record when installing 13.04 from USB on WinXP

  - by Phil Leslie

  I'm replacing WinXP with 13.04 on an older PC using wubi.exe on a USB stick. I had no problem changing the BIOS on another system that was a bit newer but when I change the settings on the older PC to boot from USB, I get a DOS message saying "Searching for boot record...Not found" & asked to try again. I don't have the ability to boot from a live CD so is there a reason why I can boot from a USB on a newer computer but can't from an older one? Both have options to choose to boot from USB, but the older one can find no boot record. The system was built on 12/13/01 by American Megatrends. Since I don't have enough "reputation points" to post the screen shot image, you can see it at http://img.photobucket.com/albums/v633/boonevillephil/1029131748-00.jpg.

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• When attempting to install ubuntu 12.04 from CD, I am stuck on black streen with "loading bootlogo..."

  - by Jessica K

  I downloaded Ubuntu 12.04 to my desktop and burned to a CD using Infra Recorder and instructions on ubuntu website. Restarted PC to boot from CD receive black screen with "Loading bootlogo..." then nothing happens and I have to restart with windows. The CD seems to be correct. Folders include .disk, boot, casper, dists, install, isolinux, pics, pool, preseed, autorun file, md5sum text file, readme.diskdefines file, wubi app. System Information Operating System: Windows Vista™ Home Premium (6.0, Build 6002) Service Pack 2 (6002.vistasp2_gdr.120824-0336) System Manufacturer: TOSHIBA System Model: Satellite L305 BIOS: Default System BIOS Processor: Intel(R) Pentium(R) Dual CPU T2390 @ 1.86GHz (2 CPUs), ~1.9GHz Memory: 3062MB RAM Page File: 1553MB used, 4772MB available Windows Dir: C:\Windows DirectX Version: DirectX 11 DX Setup Parameters: Not found DxDiag Version: 7.00.6002.18107 32bit Unicode Drive: D: Model: PIONEER DVD-RW DVRKD08L ATA Device Driver: c:\windows\system32\drivers\cdrom.sys, 6.00.6002.18005 (English), 4/11/2009 00:39:17, 67072 bytes

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• What would I do to figure out why Suspend sometimes crashes?

  - by Isaac

  Something is causing suspend crash occasionally. When it does crash, the system freezes with a black screen and stays on, not suspending. This makes me have to hold the power button until the system shuts down. One setting difference I have from most people is, I don't use the option that lets you suspend when the laptop lid is closed. So opening and closing the laptop lid has no actions. I like to press suspend manually. Could this preference change be the cause? How can I start looking for what's causing the crash, since the crash doesn't display errors?

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• Unity 3D not Working on Acer D270 w/ Intel GMA 3600

  - by amol.kamath

  I recently bought myself an Acer Aspire One D270 with the GMA 3600 graphics chipset thinking I would get some lovely graphics. However, I am stuck using Unity 2D and I cant figure out how to enable 3D. None of the fixes I have found so far have worked. Another effect of this is that I cant change the backlight brightness. So whenever I open the lid, looking at the screen is like staring into the sun. Is there a driver for it in the works? Does the 3.4 kernel support the chipset and most of all is there a way to fix this? Please help

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• Can't disable Alt + mouse buttons combinations

  - by Andrey

  I've already searched through the questions, and didn't find the same question as I want to ask. I'm working in blender and there are some combinations that I am used to and remapping them in blender would be the last resort, not the first. I have tried to disable Alt+LMB and Alt+RMB actions in ccsm, I've tried to do this in dconf or gconf editors as well, but nothing helped. As soon as I close the editors or get back to the main screen of ccsm, these combinations are enabled again. So, for example, instead of selecting an edge loop in blender with Alt+RMB, I get this goddamn menu offering me to move the window to another workspace, etc. I really don't need this function, so I'd rather switch it off instead of remapping the hotkeys I'm used to in blender.

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• How to set up an environment for android app development?

  - by The Dark Knight

  I have been researching for sometime now regarding the process to install android sdk and associated tools . After visiting Android Developers page, i first installed the android sdk and then installed eclipse plugins for my indigo version from the install softwares options.However, it is mentioned in the developers page : Download the Android SDK. Install the ADT plugin for Eclipse (if you’ll use the Eclipse IDE). Download the latest SDK tools and platforms using the SDK Manager. I have downloaded the sdk and installed the adt plugins for eclipse.I just need to point the eclipse towards the location of the sdk. However, i am stuck at the last step which is asking me to download the latest tools using the sdk manager. The manager interface pops up and i see a lot of options there. I don't know which ones i must select and install. If some one can help me out here and tell me which options to choose and install(if possible, with a screen shot), it will be very beneficial for me.

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• NAS is intermittently inaccessible

  - by Natalie

  Model: QNAP TS-410 Turbo NAS Firmware version: 3.2.5 Build 0409T Issue: Each day, users connect to share folders on the NAS system and have read/write permissions for the share folders to which they need access. However, it often asks them for their log-in details and - when provided with right (or wrong) credentials for a user with read/write permissions - it denies them access. I've checked the logs and I keep seeing the following warnings: 2011-11-23 16:26:29 System 127.0.0.1 localhost Re-launch process [rpc.mountd]. 2011-11-23 16:26:16 System 127.0.0.1 localhost Re-launch process [proftpd]. 2011-11-23 16:25:30 System 127.0.0.1 localhost Re-launch process [rpc.mountd]. 2011-11-23 16:25:15 System 127.0.0.1 localhost Re-launch process [proftpd]. 2011-11-23 16:24:33 System 127.0.0.1 localhost Re-launch process [rpc.mountd]. 2011-11-23 16:24:21 System 127.0.0.1 localhost Re-launch process [proftpd]. 2011-11-23 16:23:37 System 127.0.0.1 localhost Re-launch process [rpc.mountd]. 2011-11-23 16:23:25 System 127.0.0.1 localhost Re-launch process [proftpd]. They seem to occur per minute but I am uncertain about whether or not they are relevant to this issue. The "Login failed" warning has also displayed in the system connection logs which tells me when and which user was unable to log in, as shown below: 2011-11-22 16:11:07 Administrator 192.168.0.xx computer-01 SAMBA --- Login Fail 2011-11-22 16:11:07 Administrator 192.168.0.xx computer-01 SAMBA --- Login Fail 2011-11-22 16:11:06 Administrator 192.168.0.xx computer-01 SAMBA --- Login Fail 2011-11-22 13:46:14 administrator 192.168.0.yy --- HTTP Administration Login Fail 2011-11-22 13:46:09 administrator 192.168.0.yy --- HTTP Administration Login Fail 2011-11-21 15:17:22 user 192.168.0.zz computer-02 SAMBA --- Login Fail 2011-11-21 15:17:18 user 192.168.0.zz computer-02 SAMBA --- Login Fail 2011-11-21 15:17:17 user 192.168.0.zz computer-02 SAMBA --- Login Fail I've researched this on Google and the QNAP forums and have not come up with a resolution as yet.

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• GNOME 3.4 released, with smooth & fast magnification

  - by Peter Korn

  The GNOME community released GNOME 3.4 today. This release contains several new accessibility features, along with a new set of custom high-contrast icons which improve the user experience for users needing improved contrast. This release also makes available the AEGIS-funded GNOME Shell Magnifier. This magnifier leverages the powerful graphics functionality built into all modern video cards for smooth and fast magnification in GNOME. You can watch a video of that magnifier (with the previous version of the preference dialog), which shows all of the features now available in GNOME 3.4. This includes full/partial screen magnification, a magnifier lens, full or partial mouse cross hairs with translucency, and several mouse tracking modes. Future improvements planned for GNOME 3.6 include focus & caret tracking, and a variety of color/contrast controls.

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• Program To Cascade/Tile Windows

  - by Richard

  I have perhaps ten or fifteen windows open. I'd like a program which automatically resizes all the windows and arranges them in columns and rows across the screen (a grid formation), automatically figuring out the largest size for the windows so that they still fit. This isn't an "Expose" type program - I want the windows to stay resized. I am using OpenBox to do my window management and am otherwise happy with it, I don't want to find a whole new window manager just to solve this problem. The program Tile is almost perfect, but it doesn't know how to lay the windows out in a grid formation. Any thoughts? Thanks!

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• Why does Ubuntu, sometimes, fails to load?

  - by mohit

  I recently installed Ubuntu 12.04 LTS on my SONY VAIO VPCEH (with Windows 7 Home Basic previously installed). Sometimes when I boot in Ubuntu, following things happen: Ubuntu loading screen seems to freeze. Esc key doesn't show installation progress. Hard-drive led doesn't glow. caps lock and scroll lock keys keep blinking. I've to manually restart my laptop. On restart, Ubuntu loads normally. What can I do to recover from present situation?

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• ubuntu 12.04 refuses to install with windows 7

  - by Amitabh Pandey

  I have a desktop computer with windows 7 installed on it . Recently I downloaded ubuntu 12.04 and burned the iso image on a new blank DVD . After successfully burning DVD , I booted from the DVD. Ubutu interface appeared asking me to either choose try ubuntu or install ubuntu . I chose to install ubuntu. Again on next screen I choose to install ubuntu inside windows 7. After pressing continue button the following message appeared : " checking battery state .............. ok checking for running unattended upgrades : acpid : exiting speech dispatcher disabled ; edit /etc/default/ speech -dispatcher Asking all remaining processes to terminate ............. ok Please remove installation media and close the tray (if any) then press enter : " Now the problem is that when I remove the installation media ( ie the DVD ) and press enter then instead of installing ubuntu the computer reboots into windows 7 !!! I am a newbie to ubuntu and therefore do not know much about it . What should I do?

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• h264 inside FLV container vs. MP4 container?

  - by Gotys

  I am developing a tube site, and currently having issues with h264 format . By looking at youtube, I noticed they are putting their hi-def videos into mp4 container, so logically I did the same. Next, I installed mod_h264_streaming for lighttpd to make streaming and timeline-scrubbing work. Problem is, that large files (500mb+ at somewhat high resolution) take for EVER to even start buffering ( I read the flowplayer or other flash players need to download metadata first) . I moved the xmov atom to the front of the file with MP4Box (i tried qt-quickstart too) , and the problem didn't go away. Next I read online I need to interleave audio tracks, so I did that too. No change in slowness. So I tried putting the same exact h264 movie into an FLV container, and the playback buffering starts almost instantly - no slowness. So what am I missing here? Why would I choose MP4 container with mod_264_streaming module , which seems super-slow over a regular FLV container with lighttpd's built-in mod_flv_streaming ? Obviously many websites pick mp4 container , but I fail to understand why ? And as a side question - I tried using HTML5's VIDEO tag to try the same h264 MP4 movie, and the scrubbing is LIGHTING FAST! I looked into lighttpd's log file, and i noticed taht Flash Players append video.mp4?start=234 each time timeline is scrubbed, wheres HTML5's video tag does no such thing . Is this some sort of limitations of Flash ? Why Can't flash streaming be same fast as HTML5 streaming? Thanks to ALL who can help. I very much appreciate this community.

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• How to restore GRUB without re-installing the OS?

  - by Calixte

  A friend of mine has a Packard Bell laptop that came with Windows pre-installed. I installed Ubuntu on it and it works fine, but everytime she tried to boot Windows on it (fortunately rarely) it fails and the computer is unable to boot any OS anymore. Upon boot, the computer stops on a black screen with a GRUB Rescue prompt. Is there any way to restore GRUB without re-installing Ubuntu? (preferably an easy way as I cannot do it for her and she is not extremely computer literate) Also (but less important), is there a way to configure GRUB (or something else) so that Windows won't destroy it on every boot attempt?

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• Can not start webhttrack

  - by Sitati

  I am trying to start my webhttrack on ubuntu 12.04 precise pangolin but all i get is the opening screen. When i press any button on the page it gives me the following errors: Oops! Google Chrome could not connect to barney:8081 Suggestions: Try reloading: barney:­8081/­server/­step2.­html i tried to run from a terminal window and get the output here: webhttrack /usr/bin/webhttrack(4405:( launching /usr/bin/x-www-browser /usr/bin/webhttrack(4405:( spawning regular browser.. Created new window in existing browser session. /usr/bin/webhttrack(4405:( browser exited /usr/bin/webhttrack: line 167: 4422 Killed ${BINPATH}/htsserver "${DISTPATH}/" path "${HOME}/websites" lang "${LANGN}" $@ If anyone can help me i appreciate it.

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• 12.04 64 bit: Keybord not responding for about 20 seconds at startup/beginning of session

  - by Danilo

  I am running Ubuntu 12.04 64bit. When I get at the login screen and try to type the password for my user, I cannot type anything for about 20 seconds. After that, the keyboard starts responding and everything works fine. Mouse is responding normally as well as all buttons of the login interface (time/calendar, session selection (Unity/Unity 2D), etc.). What could be the reason for this behavior? How can I solve this temporary freeze of the keyboard so that I can type my password immediately without having to wait each time? Thanks for your time. EDIT: I tried auto login, but the problem is still there: the Desktop loads but even there, if I try to type something in the dash or anywhere else, I must wait about 20 seconds before I can actually start typing. Can the issue be related to some keyboard modules that get loaded little bit "too late"?

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