Search Results

Search found 25585 results on 1024 pages for 'multiple variables'.

Page 186/1024 | < Previous Page | 182 183 184 185 186 187 188 189 190 191 192 193  | Next Page >

• Using multiple USB webcams in Linux

  - by rachelderp

  Running more than one USB webcam in Debian/Linux results in the the following error: libv4l2: error turning on stream: No space left on device VIDIOC_STREAMON: No space left on device What initially seemed to be a programming issue in OpenCV turned into a quest for a mysterious hardware/software problem after the same errors were produced by running cheese and xawtv. Apparently it's caused by webcams requesting all the available bandwidth on the USB host controller. With that in mind I decided to run wireshark and capinfos to see just how much bandwidth a single camera used. 4 megabits per second at 320x240 14 megabits per second at 640x480 32 megabits per second at 1920x1080 Interesting! That might explain why two cameras at 320x240 work but any higher resolution fails. It's as if my USB controller is only operating at USB 1 speeds, yet lsusb shows both webcams belonging to a device which supposedly supports 480 megabits per second. One solution proposed forcing the webcams to calculate their bandwidth usage instead of requesting their maximum by running the following commands: sudo rmmod uvcvideo sudo modprobe uvcvideo quirks=128 Unfortunately that made no difference, so I decided to try another solution. A post on StackOverflow suggested telling my webcams to use a lower FPS or compressed video format like MJPEG, but after running v4lctl list it doesn't appear either of my webcams support changing their video mode. And that's where I'm stuck. Why would two webcams operating well below the maximum speed of USB 2 would produce this error? ps: It's not a disk space issue, df displays no change when the webcams are started. pps: If it makes a difference, here's the output of lsusb

  Read the article

• Creating multiple instances of a generic database

  - by sagekilla

  Hi all, currently I'm trying to have a setup where a generic database is distributed to students. They would develop an application using this database (Say a shopping cart application), submit their project onto our server, and then it would be graded automatically. These databases are being run in Microsoft SQL Server 2005. We're using user instances to instantiate each database, and multiple requests could be serviced at once. But, the problem is when more than one student submitted a project to be graded, the first database to be instantiated would be the only one and would overwrite all other copies that were currently open. So if stu1 modified his database and stu2 and stu3 had their projects being graded concurrently, at the end of the grading stu1, stu2, and stu3 would have identical DB's at the end. Is there any way I can have multiple independent copies of a generic database, each of which I can load concurrently and modify without having any changes made to any one affecting the others? I did a little reading, and thought it might be possible to do something along the lines of: Student submits project Attach the database with unique db name (specified by student) Do all necessary operations Detach the database I'm unsure if this would fix our problem or be possible, so any help would be much appreciated!

  Read the article

• Successfully concatenating multiple videos

  - by wiseguydigital

  My mission is to create videos out of old web slideshows. To start with I have jpegs and audio files that worked as Flash slideshows in an old system, structured such as this: Audio structure my_audio_1.mp3 (this file is a 3 second mp3 of silence) my_audio_2.mp3 my_audio_3.mp3 my_audio_4 etc... roughly 30 mp3s per slideshow Image structure my_image_1.jpg (this acts as the opening slide) my_image_2.jpg my_image_3.jpg my_image_4. etc... roughly 30 images per slideshow. As there are almost 100 slideshows that must be converted to video, I have created a web-based interface using PHP to automate the process, that sits on a local system and attempts to combine the files using shell_exec(). The process uses the following workflow: Loop through each slide and make an avi or mpeg. So for instance my_mini_video_2.avi would be a video that consists of my_image_2.jpg and has a soundtrack of my_audio_2.mp3. This slide would last the length of my_audio_2.mp3. Join / stitch / concat all of the mini videos to create the final video (Using a combination of cat and either mencoder or ffmpeg (I have also tried avimerge but to no avail). Transcode the new 'master' video to various formats such as flv etc. I thought this would be simple and have been close on many occasions but it still won't work. I can't get past stage 2 as I can't get a perfect 'master' video. I have now experimented with Mencoder, FFMpeg and seem to have been through every combination I can think of. The problem is that the audio and visuals never sync, no matter what I try. Also, I have even tried created audio-less mini videos, joining the MP3s into one long MP3 using both cat and mp3wrap and then assigning the new long MP3 as the audio track, but this always produces either a very short file or a badly slowed down file and makes the female voiceover sound like a male boxer!!! There appears to be no problems at all with the original files. Does anybody have any experience in producing a video successfully from the same kind of starting point? Or any ideas on what I may be doing wrong? As an example: If I create silent mini-videos, and stitch them together into 'temp-master.mpg' and then join the MP3s together into single MP3 called 'temp-master-audio.mp3', the audio file's duration is 09:10 and the video file's duration is 08:35. They should be the same and the audio will seem sloooow. I haven't posted code as I have written lots and lots of combinations.

  Read the article

• Router(s) Issue: DNS quries sporadically fail with multiple computers hooked in

  - by bob-the-destroyer

  Basically, after anywhere from 5-60 minutes, DNS queries fail for a few minutes, then slowly begin to resolve correctly. Then the cycle repeats. This occurs only when more than one computer is on the network. All computers on the network experiences the same sporadic DNS outage at the same time. Wireless or wired, Linux or Windows, fresh OS install or old, browser or ping, same symptoms. Duplicated on 3 routers (not chained together, mind you) and 3 ISP's and 3 separate locations over the past several months. The only common theme is a single 5-yo WIN XP laptop which has been in use on the network throughout all this. There also may be anywhere between 1 - 10 devices hooked up wired or wirelessly at a time. The only reprieve I have from this torture is by using any VPN to an outside source - always smooth sailing. I typically set up any router to a) use WPA2/etc security; b) MAC whitelist; c) UPNP OFF (if available); d) always update firmware when available; e) obtain DNS from ISP automatically; f) set the router to act as DHCP server for the internal network. Adjusting channels has no effect. Any ideas?

  Read the article

• Multiple FIle Upload in FTP Using CMD

  - by user697363

  I've large number of files, over 10,000, which I want to upload in FTP server. Now, I can't zip those files & upload it as I've to read those files individually in SAS software for my analysis. If I use mput commant, then the prompt as me to say "y" eact time it tries to upload the file. This is very cumbersome. Is there any method by which it automatically upload the files without I've to manually entering "y" each time file wants to upload. The command I was using was: ftp ftp.myftp.com *my ftp server name username:myusername password:mypassword ftp> lcd c:\local_folder ftp> mput *.*

  Read the article

• mysql is not using multiple cpus

  - by mhost

  Our MySQL server has been using a lot of CPU lately (it's reached 100% several times and stays there for a while) and I noticed that it the CPU load is all on one core of one cpu. I was hoping to spread that out to all 4 on my server. I have been tweaking the MySQL settings to use more ram and less cpu, but it still occasionally reaches very high CPU usage. It seems like everything about the topic refers to thread_concurrency (which I've read is a solaris only setting). What can I do in Linux? Thanks.

  Read the article

• Excel - Chart that sums the values in multiple rows for each series

  - by Chaulky

  Suppose I have a spread sheet that looks something like this... Now, I'd like to create a column chart that has 3 series, one for each country. Then, I want series for each category, but I want to plot the total, not each individual order total. So, something like this (excuse the horrible artwork)... The data label placement isn't all the important, the key is that for each Category (Bikes and Clothes) I chart the total for each country, not individual values from the "Order Total" column. Is this possible? Is it possible to do the same idea, but to switch Country and Category around?

  Read the article

• Can you support multiple domains from vcenter

  - by eogan30

  Hi, I have an esxi server with guests on 1 domain and another esx server with guest on different domain. Is it possible to manage bother esx machines from the 1 instance of vcenter?? Thks

  Read the article

• How can multiple variables be passed to a function cleanly in C?

  - by aquanar

  I am working on an embedded system that has different output capabilities (digital out, serial, analog, etc). I am trying to figure out a clean way to pass many of the variables that will control those functions. I don't need to pass ALL of them too often, but I was hoping to have a function that would read the input data (in this case from a TCP network), and then parse the data (IE, the 3rd byte contains the states of 8 of the digital outputs (according to which bit in that byte is high or low)), and put that into a variable where I can then use elsewhere in the program. I wanted that function to be separate from the main() function, but to do so would require passing pointers to some 20 or so variables that it would be writing to. I know I could make the variables global, but I am trying to make it easier to debug by making it obvious when a function is allowed to edit that variable, by passing it to the function. My best idea was a struct, and just pass a pointer to it, but wasn't sure if there was a more efficient way, especially since there is only really 1 function that would need to access all of them at once, while most others only require parts of the information that will be stored in this bunch of state variables. So anyway, is there a clean way to send many variables between functions at once that need to be edited?

  Read the article

• Separate the multiple ipv6 addresses

  - by Ruriko

  I have a vps that comes with 16 ipv6. I used one of the addresses and I tried testing the proxy at http://ipv6-test.com/ but it detected that is using the first ipv6 adddress instead of the certain ipv6 address that I provided. Example I used 2607:f358:0001:fed5:0022:772f:6ed3:7f3c as my proxy but it detected as 2607:f358:0001:fed5:0022:0000:db61:85e1 . Why is it doing that? The proxy server I am using is polipo

  Read the article

• mysql is not using multiple cpus

  - by helpmhost

  Hi, Our MySQL server has been using a lot of CPU lately (it's reached 100% several times and stays there for a while) and I noticed that it the CPU load is all on one core of one cpu. I was hoping to spread that out to all 4 on my server. I have been tweaking the MySQL settings to use more ram and less cpu, but it still occasionally reaches very high CPU usage. It seems like everything about the topic refers to thread_concurrency (which I've read is a solaris only setting). What can I do in Linux? Thanks.

  Read the article

• Method to control multiple sites using same cookie?

  - by Frost Shadow

  Is it possible for two different web pages to use the same cookie? For example, some news sites now have buttons on the bottom, where if you are logged into facebook, you can just click the button to "like" the article. Is this a case of a 3rd party website using facebook's cookie to know which account you are, and if so, is there a way I can control it? I'm not sure how the new "like" system works, so maybe the button part isn't actually on the news site, but hosted on facebooks servers or something, so it's really facebook itself accessing its own cookie. If that's the case, is there a way I can choose when a site accesses its own cookie? Thanks for any help!

  Read the article

• multiple screen support

  - by pedr0

  Hi at all, I have some problem with multiple screen support, I work with dp(dpi) for specify the layout_heigth and layout_width and I hope that is the better way to support multiple screen, but when I tried with two smartphone I meet two different result. I give an example, this is a layout I use: <?xml version="1.0" encoding="UTF-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/cities_main_layout" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ListView android:id="@+id/citieslist" android:layout_width="wrap_content" android:layout_height="320dip" android:layout_gravity="center_vertical" android:layout_below="@id/cities_main_layout" /> <LinearLayout android:id="@+id/cities_button_layout" android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/citieslist" android:layout_gravity="center_vertical"> <Button android:id="@+id/bycountry" android:layout_height="50dip" android:layout_width="105dip" android:background="@drawable/buttonmarket" android:text="@string/button_bycountry" /> <Button android:id="@+id/top10" android:layout_height="50dip" android:layout_width="105dip" android:background="@drawable/buttonmarket" android:text="@string/button_top10" /> <Button android:id="@+id/recommended" android:layout_height="50dip" android:layout_width="105dip" android:background="@drawable/buttonmarket" android:text="@string/button_recommended" /> </LinearLayout> </RelativeLayout> The button are at the bottom of the layout, and I see two different result: In the last smartphone I can see the buttons, instead in the first I cannot...what's wrong? I have to write a layout for any set of screen??!!!

  Read the article

• Upstart multiple instances of service not working.

  - by Dax

  I started playing with MongoDB on Lucid. Now I would like to run a DB and Config server on the same box. They both use the same binary to launch, but with different config files and running on different ports. All directories for log and lib is split so one goes to mongodb and the other to mongoconf. Each process can be started without any problems on their own. start mongodb stop mongodb start mongoconf stop mongoconf But if I try to start both, the second one would just start and exit. Using 'initctl log-priority debug' I got the following in the logs. Jan 6 12:44:12 mongo4 init: event_finished: Finished started event Jan 6 12:44:12 mongo4 init: job_process_handler: Ignored event 1 (1) for process 5690 Jan 6 12:44:12 mongo4 init: mongoconf (mongoconf) main process (5690) terminated with status 1 Jan 6 12:44:12 mongo4 init: mongoconf (mongoconf) goal changed from start to stop Jan 6 12:44:12 mongo4 init: mongoconf (mongoconf) state changed from running to stopping man 5 init shows that you can use instance names to differentiate the two. I tried using 'instance mongoconf' in the on upstart script and 'instance mongodb' in the other one, and it still fails. I can manually start the other process, so there is definitely no conflicts on port numbers or directories. Any ideas on what to try or how to get output on why it is 'terminated with status 1'? Thanx

  Read the article

• Passwordless ssh on multiple machines

  - by Phil

  Hi all, I'm quite confused with all the ssh security stuff. I am trying to reconfigure a system that is currently broken for reasons unknown. Machine A is your personal computer that you use whenever you're at home. Machine B is the head node of an HPC cluster and all the other machines C are all identically configured machines which share the home directories of machine B. This is an HPC cluster if you haven't guessed. How would I configure passwordless ssh between any nodes B or C. A can only get to C through sshing into B

  Read the article

• when using context menu in windows explorer xp, selecting multiple files and "open with ->" only ope

  - by user34945

  I have a problem with a particular application. However this can be replicated by selecting 2 text files and then "open with"-notepad or wordpad, and only 1 opens... This is windows xp prof...

  Read the article

• Windows Remote Desktop with multiple monitors

  - by BDW

  I'm looking for a remote desktop product that will allow me to switch on the fly between how many monitors the desktop is using. This would be going from one Windows 7 machine to another, one is running Ultimate, the other Enterprise. I know I can use Windows RDP with multi-monitor support, but it seems that only allows me to use ALL monitors, and if I switch to a windowed view, I get huge scrollbars because I'm going from 3 monitors to 1 window. What I'm looking for is something that will allow me to switch from 1, 2, or 3 monitor displays without restarting the RDP and would end up with a true 1/2/3 display - ie, if I go from 3 monitors to 1, or a window, I don't get scrollbars. Is there any such product?

  Read the article

• Tomcat directly serve static (css, js) files shared by multiple applications

  - by Josvic Zammit

  I'm using the ExtJS framework which has a bulk of js and css files that are used for all apps. I intend to share these between a number of web applications (different war files). For this reason I would like to serve ExtJS js and css directly from the web server, in my case Tomcat6, which can be used to serve static files, as in this helpful link. Therefore I put my files under /var/lib/tomcat6/webapps/ROOT/extjs/. The static files that are directly under that directory are served correctly, e.g. /extjs/ext.js correctly serves the file at /var/lib/tomcat6/webapps/ROOT/extjs/ext.js. However files in lower-level directories, for example /extjs/welcome/css/welcome.css, which should serve the file at /var/lib/tomcat6/webapps/ROOT/extjs/welcome/css/welcome.css, return a 404. TL/DR Tomcat serves static files only at top-level directory. A 404 is returned for files deeper in the hierarchy. Config file contents: server.xml application's web.xml

  Read the article

• Installing multiple versions of a shared library

  - by nsfyn55

  I am running ubuntu 10.04 and I want to use tmux 1.6. tmux has a dependency on libevent 2. My solution was to compile libevent2 and drop into /usr/local/lib then compile tmux against this lib and drop into /usr/local/bin. This works great until...I restart. This is just an assumption on my part but it seems that other binaries are now linking to the libevent2 library presumably because its on the library path. Because there are 60+ packages with libevent1 dependencies this causes my install to basically lose its mind. Is there an idiomatic way to approach running an application that has a core library dependency on a different version? Should I just statically link the lib?

  Read the article

• How to synchronize tasks on multiple computers

  - by SysGen

  I would like to be able to run similar tasks on several computers that must be precisely synced. More specifically I need 4 laptops to be synced, probably over local network, and I need to use one of them to start a task (play a video) on all of them at the same time (different video files on different laptops). All of them are running Windows. Is there a third-party software or any easier way to do so over LAN without significant delay? I need virtually no response time - if there would be a single video streaming on all laptops then people should not recognize the delay.

  Read the article

• Vagrant sahara plugin - multiple snapshots

  - by BazZy

  How I can make more than one snapshot when in sahara sandbox mode? Or, can I see list of all commits I've ever made and rollback to any? Why do I need all this? I just want to setup initial VM. After that I want to compile number of packages from sources, and this takes pretty long time. So right now I thinking of this order: Setup initial ubuntu 12.04 vagrant box Snapshot this state Compile sources, install system wide rbenv (it make compilation also) Snapshot second state Start all my infrastructure experiments Rollback to any of my previous states or commit third state

  Read the article

• Multiple network interfaces and UDP packets distribution

  - by Robert Kubrick

  I have a Linux server with 2 1Gb network interfaces eth1 and eth2. If I start 2 clients listening to the same multicast address and each client connects through a different NIC (say client 1 listens to the multicast through eth1 and client 2 through eth2), then client 2 gets duplicate UDP packets. If both clients use the same interface eth1 on the other hand, both clients work fine. I have already tried to set arp_filter and proxy_arp to 1 (arp flux issue) but it hasn't solved the issue. Is this a Linux kernel problem? Or is there another way to setup the interfaces correctly?

  Read the article

• Multiple SSL certificates on one server

  - by Kyle O'Brien

  We're hosting two websites on our fairly tiny but dedicated production server. Both website require SSL authentication. So, we have virtualhosts set up for both of them. They both reference their own domain.key, domain.crt and domain.intermediate.crt files. Each CSR and certificate file for each site was setup using its own unique information and nothing is shared between them (other than the server itself) However, which ever site's symbolic link (set up in /etc/apache2/sites-enabled) is reference first, is the site who's certificate is referenced even if we're visiting the second site. So for example, assume our companies are Cadbury and Nestle. We set up both sites with their own certificates but we create Cadbury's symbolic link in apache's site-enabled folder first and then Nestle's. You can visit Nestle perfectly fine but if you check the certificate installation, it reference's Cadbury's certificate. We're hosting these websites on a dedicated Ubuntu 12.04.3 LTS server. Both certificates are provided by Thawte.com. I came across a few potential solutions with no degree of success. I'm hoping someone else has a decent solution? Thanks Edit: The only other solution that seems to have provided success to some people is using SNI with Apache. However, the setups here didn't seem to coincide with our setup at all.

  Read the article

• Multiple wifi cards and Internet connections on Win-7

  - by Dpp

  Hello, I have two wifi cards and two separated internet connections. I connect to the Internet with both of them but one does all of the internet transactions (and I have not seen any place where I can specify which one I would prefer to use!) What I would like to do is use one of them for the browser and skype only, and the other one for stock exchange software for instance. Any idea if it is possible?

  Read the article

• Combine multiple network interfaces to connect to a dedicated server

  - by Dženis Macanovic

  this is an underpaid employee writing, who's apparently responsible for all the IT stuff in a very small (non-IT) company. Today said company got a bunch of PCs/workstations, a switch, a computer that's supposed to be used as a router, two DSL connections (each 16 MBit/s downstream and 1 MBit/s upstream) and a dedicated server which is hosted and managed professionally by a larger local company with some decent connection speed (1 GBit/s both directions if I'm not mistaken). This is what I've set up (note I'm not making use of the second DSL connection at all)... ETH0 ETH1 [ SWITCH ]---[LINUX DEBIAN ROUTER]---[DSL MODEM 1]---[INTERNET] | | | PC1 | | PC2 | ... ... when my boss asked me, if it was somehow possible to get 32 MBit/s downstream and 2 MBit/s upstream. At that time I replied "no" without thinking too much about it. Now I've just had the following idea... ETH1 ETH0 ETH0 ,---[DSL MODEM 1 (NON-STATIC IP)]---, ,---, ETH0 [ SWITCH ]---[LINUX DEBIAN ROUTER] [INTERNET] [LINUX DEBIAN SERVER]---[INTERNET] | | | '---[ DSL MODEM 2 (STATIC IP) ]---' '---' PC1 | | ETH2 ETH0 PC2 | ... ... but I have absolutely no clue how to implement that. Would that even be possible? What would the masquerading rules look like on the router? What about the server? I didn't find anything on the internet, mainly because I couldn't come up with any good keywords to search for to begin with. English obviously isn't my first language. Thanks in advance for your time!

  Read the article

< Previous Page | 182 183 184 185 186 187 188 189 190 191 192 193  | Next Page >