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• USB Mouse and Keyboard not working in Linux 4 Tegra

  - by Sijo

  I am a new person in Tegra Linux development. I have Tamontem NG Evaluation board with Tegra 3 Chip. I installed L4T sample file system from NVIDIA tegra Resources (https://developer.nvidia.com/linux-tegra) and installed the file system as described in the documentation provided in NVIDIA site. Already these was an SD card with L4T running. i dont want to change the boot loader. So I copied the boot.scr.uimg to root (/) folder and uImage to boot(/boot/) and it starts booting from the existing SD card. After that while booting, some errors occurred in some Bluetooth devices (there is no bluetooth device in the board). So I disabled Bluetooth by giving the following command sudo mv /etc/init/bluetooth.conf /etc/init/bluetooth.conf.noexec Now the problem is that mouse and keyboard are not working. So i cannot login. Even though i installed desktop, the mouse and keyboard are not working. But mouse and keyboard are enumerating. lsusb command is showing the USB mouse and keyboard. The installed file system is Ubuntu 13.04. Linux Kernel version is 3.1 What to do. Please help.Thanks in Advance.

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• Getting the most out of a Mac mini as a media center

  - by celebritarian

  Hello! I own an old Mac mini from 2006 (maybe early 2007). It's got an Intel Core Solo 32-bits CPU and 512 MB RAM. 160 GB HDD. The GPU is an integrated chip… Currently, my Mini is sitting under my LCD TV (720p). It's plugged in via a DVI to HDMI cable. It's currently running Leopard. And unfortunately, Snow Leopard can't be installed on a device with less than 1 GB of RAM… So, my Mac mini isn't exactly powerful. Also, it's slow and Mac OS X is not a pleasant experience on my Mini right now. It feels slow and heavy. I want to use my Mac mini as a media center/player. I want to be able to play video files in 720p (H.264, Matroska/MOV files). So basically, playing high-def videos is all I want to do with my Mini. What OS should I install? Stick to OS X? Optimize for video playback? Or should I install another OS — like Win XP, Ubuntu or any other Linux dist? Then, will my Mini be able to play 720p videos smoothly, even though the CPU and GPU aren't that powerful and with the limit of 512 MB of RAM? Appreciate all help. Thanks in advance!

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• Async ignored on AJAX requests on Nginx server

  - by eComEvo

  Despite sending an async request to the server over AJAX, the server will not respond until the previous unrelated request has finished. The following code is only broken in this way on Nginx, but runs perfectly on Apache. This call will start a background process and it waits for it to complete so it can display the final result. $.ajax({ type: 'GET', async: true, url: $(this).data('route'), data: $('input[name=data]').val(), dataType: 'json', success: function (data) { /* do stuff */} error: function (data) { /* handle errors */} }); The below is called after the above, which on Apache requires 100ms to execute and repeats itself, showing progress for data being written in the background: checkStatusInterval = setInterval(function () { $.ajax({ type: 'GET', async: false, cache: false, url: '/process-status?process=' + currentElement.attr('id'), dataType: 'json', success: function (data) { /* update progress bar and status message */ } }); }, 1000); Unfortunately, when this script is run from nginx, the above progress request never even finishes a single request until the first AJAX request that sent the data is done. If I change the async to TRUE in the above, it executes one every interval, but none of them complete until that very first AJAX request finishes. Here is the main nginx conf file: #user nobody; worker_processes 1; #error_log logs/error.log; #error_log logs/error.log notice; #error_log logs/error.log info; #pid logs/nginx.pid; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; server_names_hash_bucket_size 64; # configure temporary paths # nginx is started with param -p, setting nginx path to serverpack installdir fastcgi_temp_path temp/fastcgi; uwsgi_temp_path temp/uwsgi; scgi_temp_path temp/scgi; client_body_temp_path temp/client-body 1 2; proxy_temp_path temp/proxy; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; #access_log logs/access.log main; # Sendfile copies data between one FD and other from within the kernel. # More efficient than read() + write(), since the requires transferring data to and from the user space. sendfile on; # Tcp_nopush causes nginx to attempt to send its HTTP response head in one packet, # instead of using partial frames. This is useful for prepending headers before calling sendfile, # or for throughput optimization. tcp_nopush on; # don't buffer data-sends (disable Nagle algorithm). Good for sending frequent small bursts of data in real time. tcp_nodelay on; types_hash_max_size 2048; # Timeout for keep-alive connections. Server will close connections after this time. keepalive_timeout 90; # Number of requests a client can make over the keep-alive connection. This is set high for testing. keepalive_requests 100000; # allow the server to close the connection after a client stops responding. Frees up socket-associated memory. reset_timedout_connection on; # send the client a "request timed out" if the body is not loaded by this time. Default 60. client_header_timeout 20; client_body_timeout 60; # If the client stops reading data, free up the stale client connection after this much time. Default 60. send_timeout 60; # Size Limits client_body_buffer_size 64k; client_header_buffer_size 4k; client_max_body_size 8M; # FastCGI fastcgi_connect_timeout 60; fastcgi_send_timeout 120; fastcgi_read_timeout 300; # default: 60 secs; when step debugging with XDEBUG, you need to increase this value fastcgi_buffer_size 64k; fastcgi_buffers 4 64k; fastcgi_busy_buffers_size 128k; fastcgi_temp_file_write_size 128k; # Caches information about open FDs, freqently accessed files. open_file_cache max=200000 inactive=20s; open_file_cache_valid 30s; open_file_cache_min_uses 2; open_file_cache_errors on; # Turn on gzip output compression to save bandwidth. # http://wiki.nginx.org/HttpGzipModule gzip on; gzip_disable "MSIE [1-6]\.(?!.*SV1)"; gzip_http_version 1.1; gzip_vary on; gzip_proxied any; #gzip_proxied expired no-cache no-store private auth; gzip_comp_level 6; gzip_buffers 16 8k; gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript; # show all files and folders autoindex on; server { # access from localhost only listen 127.0.0.1:80; server_name localhost; root www; # the following default "catch-all" configuration, allows access to the server from outside. # please ensure your firewall allows access to tcp/port 80. check your "skype" config. # listen 80; # server_name _; log_not_found off; charset utf-8; access_log logs/access.log main; # handle files in the root path /www location / { index index.php index.html index.htm; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root www; } # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9100 # location ~ \.php$ { try_files $uri =404; fastcgi_pass 127.0.0.1:9100; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } # add expire headers location ~* ^.+.(gif|ico|jpg|jpeg|png|flv|swf|pdf|mp3|mp4|xml|txt|js|css)$ { expires 30d; } # deny access to .htaccess files (if Apache's document root concurs with nginx's one) # deny access to git & svn repositories location ~ /(\.ht|\.git|\.svn) { deny all; } } # include config files of "enabled" domains include domains-enabled/*.conf; } Here is the enabled domain conf file: access_log off; access_log C:/server/www/test.dev/logs/access.log; error_log C:/server/www/test.dev/logs/error.log; # HTTP Server server { listen 127.0.0.1:80; server_name test.dev; root C:/server/www/test.dev/public; index index.php; rewrite_log on; default_type application/octet-stream; #include /etc/nginx/mime.types; # Include common configurations. include domains-common/location.conf; } # HTTPS server server { listen 443 ssl; server_name test.dev; root C:/server/www/test.dev/public; index index.php; rewrite_log on; default_type application/octet-stream; #include /etc/nginx/mime.types; # Include common configurations. include domains-common/location.conf; include domains-common/ssl.conf; } Contents of ssl.conf: # OpenSSL for HTTPS connections. ssl on; ssl_certificate C:/server/bin/openssl/certs/cert.pem; ssl_certificate_key C:/server/bin/openssl/certs/cert.key; ssl_session_timeout 5m; ssl_protocols SSLv3 TLSv1 TLSv1.1 TLSv1.2; ssl_ciphers HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on; # Pass the PHP scripts to FastCGI server listening on 127.0.0.1:9100 location ~ \.php$ { try_files $uri =404; fastcgi_param HTTPS on; fastcgi_pass 127.0.0.1:9100; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } Contents of location.conf: # Remove trailing slash to please Laravel routing system. if (!-d $request_filename) { rewrite ^/(.+)/$ /$1 permanent; } location / { try_files $uri $uri/ /index.php?$query_string; } # We don't need .ht files with nginx. location ~ /(\.ht|\.git|\.svn) { deny all; } # Added cache headers for images. location ~* \.(png|jpg|jpeg|gif)$ { expires 30d; log_not_found off; } # Only 3 hours on CSS/JS to allow me to roll out fixes during early weeks. location ~* \.(js|css)$ { expires 3h; log_not_found off; } # Add expire headers. location ~* ^.+.(gif|ico|jpg|jpeg|png|flv|swf|pdf|mp3|mp4|xml|txt)$ { expires 30d; } # Pass the PHP scripts to FastCGI server listening on 127.0.0.1:9100 location ~ \.php$ { try_files $uri /index.php =404; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; fastcgi_pass 127.0.0.1:9100; } Any ideas where this is going wrong?

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• moving plone or recovering data

  - by Atilla Filiz

  I had a simple plone site running on my Ubuntu 8.10 box, setup by following instructions on https://help.ubuntu.com/community/forum/server/Plone Now the computer got an Ubuntu 9.04 install from scratch, and I want to get the site up and running. As far as I understand several python libraries from 9,04 are not compatible with plone. I tried installing plon3-site from ubuntu repos, and I got this: $bin/instance start Traceback (most recent call last): File "bin/instance", line 103, in ? import plone.recipe.zope2instance.ctl File "/media/Robocup2009/robocup2009/eggs/plone.recipe.zope2instance-2.7-py2.4.egg/plone/recipe/zope2instance/__init__.py", line 16, in ? import zc.buildout File "/media/Robocup2009/robocup2009/eggs/zc.recipe.egg-1.1.0-py2.4.egg/zc/__init__.py", line 1, in ? __import__('pkg_resources').declare_namespace(__name__) ImportError: No module named pkg_resources I have python-pkg-resources installed. I actually don't care about plone, I just found it easy to use. My site is just photo and video archive of several users, with low traffic but several gigabytes of data. What would you suggest? Is it easier to get plone working on my box and start my instance(how?), or recover the content from the instance folder(how?) and setup another content management system(which?)

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• Which linux distributions offer seamless support for UEFI and an LVM root out of the box?

  - by Jannik Jochem

  My new ultrabook (an Asus UX32VD) requires UEFI in order to boot from the internal harddisk. I use an LVM partition which contains my root fs and dual-boot Windows 8. I somehow managed to get this working on Sabayon Linux, however the overall process was pretty painful, and system upgrades keep breaking my configuration because everything depends on a hand-configured kernel and a hand-crafted GRUB2 configuration. This causes a lot of hassle and distractions for me, so I am considering to switch to a different distribution. However, I cannot find any concrete resources that precisely document the state of UEFI support in the popular distributions. As an example, the length of the Ubuntu wiki page on UEFI suggests that installing on UEFI systems is a non-trivial process, and this AskUbuntu thread on encrypted LVM on UEFI systems suggests that LVM might also be a problem. I know that this question seems somewhat open-ended, so I'll formulate concrete questions: Are there any Linux distributions with an installer that supports installing to an LVM root in a UEFI boot setting where Windows 8 is dual-booted? Which distributions support UEFI without having to jump through hoops in order to bootstrap into a UEFI-booted system or requiring manual configuration of the boot manager?

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• Audio card with built-in ground isolator?

  - by Dave Jarvis

  What audio cards would you recommend that eliminate hum, and hard-drive & mouse movement signal interference? Hardware components: Motherboard. Asus P5Q SE Audio. Realtek ALC 1200, 8-Channel High-Definition Audio CODEC (on board) Harddrive. WD Caviar 320 GB Mouse. Logitech Marbleman USB Mixer. Mackie d.4 Pro Amplifier. Sonance Sonamp 260 All components are plugged into the same Monster Power HDP 910 powerbar (does not help eliminate noise). I have no other components plugged in. The computer uses a Monster iCable 1000 to go from mini (on board audio) to RCA (mixer). I have moved the cable as far from other cables as possible. A ground loop isolator between the mixer and on board audio eliminates all noise. I would rather not use a ground loop isolator; an internal audio card that is Linux-compatible (Kubuntu) would be ideal. Suggestions?

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• MsMpEng.exe (Windows Defender?) uses a lot of CPU at startup and runs two instances on a single core

  - by dlamblin

  I'm using Windows XP Professional SP2 on a single core AMD64 processor, and I've got two instances of MsMpEng.exe starting up when I start up and log in. They use 64MB and 32MB of ram and 140MB and 80MB of virtual memory, and fluctuate around 80% CPU usage for about 5 minutes at start up. They are (I read) associated with Windows Defender, but I'm concerned about: There's two of them, everything I read generally has only one reported. They might be scanning each other, and I want that to stop. They might be getting scanned by avgrsx.exe (AVG Free 8) (uses about 16Mb v ram) They might also be scanning moe.exe (assosciated with ms live mesh, which I'm considering getting rid of) Lastly I have Microsoft Security Essentials. I don't know the process name associated there. The main concern of mine (apart from the double instances) is that these are all trying to prioritize scanning each other at once except maybe moe.exe. This might seem legitimate but is likely a useless drain on resources. Have I made a mistake in having all of these installed, or is there a way to inform them not to do whatever they're doing that's taking about 5+ minutes at start up? [I also have Google Desktop, but I'm keeping that.] Comment if none of this makes sense to you.

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• nginx rewrite regex for API versioning

  - by MSpreij

  What I want is for the first to be turned into the second.. /widget => /widget/index.php /widget/ => /widget/index.php /widget?act=list => /widget/index.php?act=list /widget/?act=list => /widget/index.php?act=list /widget/list => /widget/index.php?act=list /widget/v2?act=list => /widget/v2.php?act=list /widget/v2/?act=list => /widget/v2.php?act=list /widget/v2/list => /widget/v2.php?act=list v2 could also be v45, basically "v\d+" act, "list" in this case, can have many values and more will be added. Any additional query parameters would just be passed on with $args, I guess. Basically URLs not specifying the version will go to index.php, which can then decide what specific version file to include. What I am afraid of happening is loops - this should sit in location /widget { right?. (As for putting the version of the API in the URL, I'm not trying to be RESTful, and target audience is small) Resources on how to do this entirely in index.php using "routers" also welcome :-/

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• HP Officejet 4500 G510n-z Not Showing up in Remote Desktop (Terminal Services)

  - by Greg_the_Ant

  I installed this printer on a windows XP machine. First using the wireless option, and later using USB. In both cases when I connect to my other computer (also Windows XP) via terminal services and check printers in the local resources tab it does not show up on the remote session. I used to have a Samsung connected to my local computer over USB and and that worked fine over terminal services. Things I tried so far: I did read this page and installed the software fix on both computers: (Printers that use ports that do not begin with...) I installed the minimum HP software install on the remote computer and that didn't help either. I also tried running the add new printer wizard on the remote computer: I selected "local printer attached to this computer" and did not check the "automatically.." option. On the next page of the wizard I can select an option for "use the following port". I see options for TS001 through TS009 there. I'm assuming those are coming from the local machine. I tried clicking each one and then checking "have disk" and pointing it to C:\3be8dc611b11322e8ddf8a67\i386\msxpsdrv.inf 1 but for every single TS00.. port it says "The specified location does not contain information about your hardware." Any help would be greatly appreciated. I'm pretty stuck at this point. 1 C:\3be8dc611b11322e8ddf8a67 is the folder I extracted the HP driver software to after I downloaded it.

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• Load Testing a Security/Gateway Appliance

  - by Joel Coel

  In a couple weeks I will load testing a security/gateway appliance. We're a small residential college, and that "residential" means the traffic moving through the appliance is a bit like the Wild West. We have everything from Facebook to World of Warcraft, BitTorrent to Netflix, or Halo to YouTube... basically anything you might find in the home of a high-school or college aged person. Somewhere in there some real academic work gets done as well. We rely on our current appliance for traffic shaping, antivirus, malware filtering, intrusion detection on our servers, logging and abuse reporting, and even some content filtering. All this puts a decent load when we have students around, and I'm concerned about the ability of the new candidate to keep up. On paper it should handle things, but I'm worried. Prior experience is that vendors greatly over-report what an appliance can handle. The product also includes a licensed session limit, and I'm also worried that just a few misbehaving students could unwittingly bring us to that limit and cause service disruptions. I need to know this will work for our campus in order to commit to it. Going a performance level higher in that product takes the pricing way out of line with what we expect and have done in the past. What I need is a good way to load test this guy. My problem is that our current level of summer traffic is less than one percent of what it will be when students come back just six weeks from now. Any ideas on how to really stress this thing and see what it can do, in a way that will give me some clear ideas o. How that will scale for our campus? For the curious, I'm looking at a Watchguard 515, but it could be anything. If I were evaluating a competitor, I'd ask the same question.

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• nginx reverse ssl proxy with multiple subdomains

  - by BrianM

  I'm trying to locate a high level configuration example for my current situation. We have a wildcard SSL certificate for multiple subdomains which are on several internal IIS servers. site1.example.com (X.X.X.194) -> IISServer01:8081 site2.example.com (X.X.X.194) -> IISServer01:8082 site3.example.com (X.X.X.194) -> IISServer02:8083 I am looking to handle the incoming SSL traffic through one server entry and then pass on the specific domain to the internal IIS application. It seems I have 2 options: Code a location section for each subdomain (seems messy from the examples I have found) Forward the unencrypted traffic back to the same nginx server configured with different server entries for each subdomain hostname. (At least this appears to be an option). My ultimate goal is to consolidate much of our SSL traffic to go through nginx so we can use HAProxy to load balance servers. Will approach #2 work within nginx if I properly setup the proxy_set_header entries? I envision something along the lines of this within my final config file (using approach #2): server { listen Y.Y.Y.174:443; #Internally routed IP address server_name *.example.com; proxy_pass http://Y.Y.Y.174:8081; } server { listen Y.Y.Y.174:8081; server_name site1.example.com; -- NORMAL CONFIG ENTRIES -- proxy_pass http://IISServer01:8081; } server { listen Y.Y.Y.174:8081; server_name site2.example.com; -- NORMAL CONFIG ENTRIES -- proxy_pass http://IISServer01:8082; } server { listen Y.Y.Y.174:8081; server_name site3.example.com; -- NORMAL CONFIG ENTRIES -- proxy_pass http://IISServer02:8083; } This seems like a way, but I'm not sure if it's the best way. Am I missing a simpler approach to this?

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• Advice needed: warm backup solution for SQL Server 2008 Express?

  - by Mikey Cee

  What are my options for achieving a warm backup server for a SQL Server Express instance running a single database? Sitting beside my production SQL Server 2008 Express box I have a second physical box currently doing nothing. I want to use this second box as a warm backup server by somehow replicating my production database in near real time (a little bit of data loss is acceptable). The database is very small and resources are utilized very lightly. In the case that the production server dies, I would manually reconfigure my application to point to the backup server instead. Although Express doesn't support log shipping natively, I am thinking that I could manually script a poor man's version of it, where I use batch files to take the logs and copy them across the network and apply them to the second server at 5 minute intervals. Does anyone have any advice on whether this is technically achievable, or if there is a better way to do what I am trying to do? Note that I want to avoid having to pay for the full version of SQL Server and configure mirroring as I think it is an overkill for this application. I understand that other DB platforms may present suitable options (eg. a MySQL Cluster), but for the purposes of this discussion, let's assume we have to stick to SQL Server.

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• How to solve SocketException: Permission denied: connect

  - by luxinxian

  I recently encountered a problem that is giving me a headache and I need help ... The System consists of two subsystems, called A and B, each running on a standalone Tomcat instance and currently running on the same machine. A invokes B's service via Spring httpInvoker (i.e. over HTTP). B system also invokes the other system's services via HTTP. Symptoms: the system starts to run and appears to work normally for around 10-15 days; the system will run for a period of time after an exception: org.springframework.remoting.RemoteAccessException: Could not access HTTP invoker remote service at [http://xxx.xxx.xxx.xxx/remoting/call]; The nested exception is java. net.SocketException: **Permission denied: connect** when the exception occurs, the system continues. This happens always, not only occasionally. (It looks like some resources are exhausted, but CPU rate < 5%, memory < 15%, network < 5%). when the system call between A and B fails, the B system call over HTTP to an external service also failed, with the same exception. Restarting both Tomcat services makes the whole system work properly. So repeatedly following steps 1 - 5, I have not found the root reason. Environment: windows 2008 R2 tomcat7.0.42 x86_64 oralce-jdk-1.7.0_40 Any ideas?

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• Automatically Kill/Restart Process(es) When Memory is Critically Low

  - by nemesisfixx

  I have a Debian Wheezy VPS box where am running a couple of Django apps in production. Ideally, would have tried addressed my current memory footprint issues by optimizing the apps, adding more RAM or augmenting with Swap. But the problem is that I doubt there's much memory optimization I'd milk from optimizing the Django apps (the stack being open-source and robust), and adding RAM is a cost constraint for me (this is a remote VPS), also, the host doesn't offer options to use Swap! So, in the meantime (as I wait to secure more resources to afford more RAM), I wish to mitigate the scenarios where the server runs out memory so that I just have to request a VPS restart (as in, at that point, I can't even SSH into the box!). So, what I would love in a solution is the ability to detect when a process (or generally, total system memory usage) exceeds a certain critical amount (for now, example the FREE RAM falls to say 10%) - which I've noticed occurs after the VPS's been up for long, and when also traffic is suddenly much to some of the heavy apps (most are just staging apps anyway). So, I wish to be able to kill/restart the offending process(es) - most likely Apache. Which solution when done manually in these situations has restored sane memory usage levels - a hint that possibly one or more of the Django apps has a memory leak? In brief: Monitor overall system RAM usage When FREE RAM falls below a given critical threshold (say below 10%), kill/restart the offending process(es) - or simpler, if we assume from my current log analysis (using linux-dash) that Apache is often the offender, then kill/restart it. Rinse and repeat...

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• 502: proxy: pass request body failed

  - by Andrei Serdeliuc

  Sometimes I get the following error (in apache's error.log) when viewing my site over https: (502)Unknown error 502: proxy: pass request body failed to xxx.xxx.xxx.xxx:443 I'm not entirely sure what this is and why it happens, it's also not consistent. The request route is: Browser Proxy server (apache with mod_proxy + mod_ssl) Load balancer (aws) Web server (apache with mod_ssl) The configuration on the proxy server is as follows: <VirtualHost *:443> ProxyRequests Off ProxyVia On ServerName www.xxx.co.uk ServerAlias xxx.co.uk <Directory proxy:*> Order deny,allow Allow from all </Directory> <Proxy *> AddDefaultCharset off Order deny,allow Allow from all </Proxy> ProxyPass / balancer://cluster:443/ lbmethod=byrequests ProxyPassReverse / balancer://cluster:443/ ProxyPreserveHost off SSLProxyEngine On SSLEngine on SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL SSLCertificateFile /var/www/vhosts/xxx/ssl/www.xxx.co.uk.cert SSLCertificateKeyFile /var/www/vhosts/xxx/ssl/www.xxx.co.uk.key <Proxy balancer://cluster> BalancerMember https://xxx.eu-west-1.elb.amazonaws.com </Proxy> </VirtualHost> Any idea what the issue might be?

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• LASER x Deskjet Printer

  - by Mike

  I am about to buy a color printer. I had a b&W laserjet printer in the past but since then I use deskjet for decades. I need a printer that can deliver high quality as these photo deskjet printers but I am tired of paying ink that costs $9,000 per gallon of ink (1 gallon = 3.785 liters = 300 cartridges = $9,000). So, I was pondering about buying a color laser, but I am not sure if these printers can deliver the same quality and worth the investment in terms of toner consumption. I remembered that my old laserjet printer was able to print 1100 pages per toner cartridge. The deskjet printers I have can print 500 pages per cartridge. Price by price, 2 deskjet cartridges have more or less the same cost as one toner cartridge and in theory prints almost the same. I am not sure if this is true for color lasers. What you guys can tell me about quality, toner cost and cost per page using laser or deskjet. Does it worths the change? Remember that a deskjet printer costs $50 and a laser printer costs $200. thanks.

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• LSI 9260-8i w/ 6 256gb SSDs - RAID 5, 6, 10, or bad idea overall?

  - by Michael Pearson

  We're provisioning a new production server for our reasonably busy website. Our choice of host have available a 6 drive configuration with a LSI 9260-8i card. My initial thought was to fill all six bays with SSDs (Intel 520 256gb) and set them up in RAID. Good, bad, or terrible idea? Can the card handle it? Should we be using RAID 5, 6 or 10? This would be the first time the provider have filled all six slots for this rackmount with SSDs, so they're a bit hesitant. I'm wondering if somebody else with this card has done something similar in a production environment. We do about 43gb of writes per day and currently use about 300gb of storage. The server acts as webserver, database, and image store for approx 1 million files. The plan is to underprovision the SSDs by approximately 10% to 20% to increase their overall lifespan & performance. The fallback option is 2x480gb SSDs in RAID 1 and another 2x1TB HDDs in RAID 1. The motivation behind this is that the server rental cost difference between 2xSSDs and 6xSSDs is minimal (compared to the overall cost of the rental). We do not have any special high-IOPs requirements. However, if the configuration is known to work, I don't see a good reason to not use it and not have to worry about having separate 'fast and small' and 'slow and large' disks.

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• How to let MSN or Yahoo Messenger set you to be Invisible or Offline when you are idle for an hour?

  - by Jian Lin

  The short question is: How do we let MSN or Yahoo Messenger set us to be Invisible or Offline when we are idle for half an hour or an hour? The reason is: if I am on 24 hours a day, some people see me as weird. Some people see my value as low, because I am always there. There are ways to set me to "Away" or "Busy" after 10 minutes, but there seems to be no way to set myself to invisible or offline after 1 hour. As I am a software developer, I am very used to turning the computer on 24 hours a day. (for example, for checking email for urgent fixes, and fix issue and push to web server). We don't turn off computer usually even when we sleep, because we may sometimes can't sleep yet and come check on the computer, or wake up in the morning and immediately need to check if everything is ok. But, my MSN and Yahoo Messenger is always on for 24 hours a day, and I found that some girls start to ask me why I am always there 24 hours a day (even though they see me as away or busy, their feeling is that I am always there). What's more, I found that since I am always there, my value actually drop in their eyes, because hard to get = high value, and always there = low value. Some people feel me as having nothing much to do, always in front of computer, or what is he doing in front of computer so much? Now since it is my job, and I need to read emails once in a while, I am in fact in front of the computer more than some other people. I am in front of the computer maybe 10 hours a day, far from 24 hours a day. Is there an easy and automatic solution to this?

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• Windows cant repair even with sfc /scannow

  - by GeekyDewd

  Clean install of windows 8, then installed the windows 8.1 update (after all other updates). CBS Log: CBS Log on Google Drive Important pieces of the log: Found: {l:32 b:LrOXAtJDCCTN+z+D1bKj7ogYIrX7sfCCDh+wVBfsrCQ=} Expected: {l:32 b:n520k714Uu3utHa5JGQ6HQYbZphKhlMWq5pEmfnCDuw=} 2014-05-17 21:35:38, Info CSI 00000505 [SR] Cannot repair member file [l:36{18}]"Amd64\CNBJ2530.DPB" of prncacla.inf, Version = 6.3.9600.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type = [l:24{12}]"driverUpdate", TypeName neutral, PublicKey neutral in the store, hash mismatch 2014-05-17 21:35:40, Info CSI 00000506 Hashes for file member \SystemRoot\WinSxS\amd64_prncacla.inf_31bf3856ad364e35_6.3.9600.16384_none_9590ba64d5b91f79\Amd64\CNBJ2530.DPB do not match actual file [l:36{18}]"Amd64\CNBJ2530.DPB" : Found: {l:32 b:LrOXAtJDCCTN+z+D1bKj7ogYIrX7sfCCDh+wVBfsrCQ=} Expected: {l:32 b:n520k714Uu3utHa5JGQ6HQYbZphKhlMWq5pEmfnCDuw=} 2014-05-17 21:35:40, Info CSI 00000507 [SR] Cannot repair member file [l:36{18}]"Amd64\CNBJ2530.DPB" of prncacla.inf, Version = 6.3.9600.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type = [l:24{12}]"driverUpdate", TypeName neutral, PublicKey neutral in the store, hash mismatch 2014-05-17 21:35:40, Info CSI 00000508 [SR] This component was referenced by [l:186{93}]"Microsoft-Windows-Printer-Drivers-Package~31bf3856ad364e35~amd64~~6.3.9600.16384.INF_prncacla" 2014-05-17 21:35:43, Info CSI 00000509 [DIRSD OWNER WARNING] Directory [ml:520{260},l:138{69}]"\??\C:\WINDOWS\System32\WindowsPowerShell\v1.0\Modules\NetSecurity\en" is not owned but specifies SDDL in component Networking-MPSSVC-WMI.Resources, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture = [l:10{5}]"en-US", VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral And: Found: {l:32 b:LrOXAtJDCCTN+z+D1bKj7ogYIrX7sfCCDh+wVBfsrCQ=} Expected: {l:32 b:n520k714Uu3utHa5JGQ6HQYbZphKhlMWq5pEmfnCDuw=} 2014-05-17 21:42:12, Info CSI 00000888 [SR] Cannot repair member file [l:36{18}]"Amd64\CNBJ2530.DPB" of prncacla.inf, Version = 6.3.9600.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type = [l:24{12}]"driverUpdate", TypeName neutral, PublicKey neutral in the store, hash mismatch 2014-05-17 21:42:13, Info CSI 00000889 Hashes for file member \SystemRoot\WinSxS\amd64_prncacla.inf_31bf3856ad364e35_6.3.9600.16384_none_9590ba64d5b91f79\Amd64\CNBJ2530.DPB do not match actual file [l:36{18}]"Amd64\CNBJ2530.DPB" : Found: {l:32 b:LrOXAtJDCCTN+z+D1bKj7ogYIrX7sfCCDh+wVBfsrCQ=} Expected: {l:32 b:n520k714Uu3utHa5JGQ6HQYbZphKhlMWq5pEmfnCDuw=} 2014-05-17 21:42:13, Info CSI 0000088a [SR] Cannot repair member file [l:36{18}]"Amd64\CNBJ2530.DPB" of prncacla.inf, Version = 6.3.9600.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type = [l:24{12}]"driverUpdate", TypeName neutral, PublicKey neutral in the store, hash mismatch 2014-05-17 21:42:13, Info CSI 0000088b [SR] This component was referenced by [l:186{93}]"Microsoft-Windows-Printer-Drivers-Package~31bf3856ad364e35~amd64~~6.3.9600.16384.INF_prncacla" 2014-05-17 21:42:13, Info CSI 0000088c [SR] Repair complete

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• Fetch videos from sony handycam to linux

  - by bstpierre

  I've got a Sony Handycam DCR-DVD101. When I plug connect the USB cable to my laptop (Ubuntu 10) it doesn't mount any storage device. If I run usb-devices, I see: T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 6 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=054c ProdID=00c1 Rev=01.00 S: Manufacturer=SONY S: Product=Storage Device C: #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=2mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=05 Prot=50 Driver=usb-storage The driver says usb-storage, but I'm not sure how to get the device mounted. Is there a way to make this work? Update: checking dmesg, I see: [259072.576559] usb 2-1.1: new high speed USB device using ehci_hcd and address 6 [259072.687200] usb 2-1.1: configuration #1 chosen from 1 choice [259072.836188] Initializing USB Mass Storage driver... [259072.836476] scsi5 : SCSI emulation for USB Mass Storage devices [259072.836632] usb-storage: device found at 6 [259072.836636] usb-storage: waiting for device to settle before scanning [259072.836660] usbcore: registered new interface driver usb-storage [259072.836666] USB Mass Storage support registered. [259077.830410] usb-storage: device scan complete [259077.832343] scsi 5:0:0:0: CD-ROM SONY DDX-A1010 R1.0 PQ: 0 ANSI: 0 [259077.888167] sr1: scsi3-mmc drive: 0x/0x pop-up [259077.888446] sr 5:0:0:0: Attached scsi CD-ROM sr1 [259077.888593] sr 5:0:0:0: Attached scsi generic sg2 type 5 [259080.002079] sr 5:0:0:0: [sr1] Unhandled sense code [259080.002085] sr 5:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [259080.002091] sr 5:0:0:0: [sr1] Sense Key : Blank Check [current] [259080.002097] sr 5:0:0:0: [sr1] Add. Sense: No additional sense information [259080.002104] sr 5:0:0:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 00 00 [259080.002117] end_request: I/O error, dev sr1, sector 0 [259080.002123] Buffer I/O error on device sr1, logical block 0 [259080.002128] Buffer I/O error on device sr1, logical block 1 Those I/O errors don't look good, is there any hope?

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• KVM network bridge with two NICs

  - by Eil

  Greetings, I'm trying to set up bridged networking with KVM and am getting nowhere. There are docs and tutorials on the subject, but they all seem to conflict or don't provide enough info. I was wondering if someone can give me a high-level overview of how to get this working. I can probably work out the details myself (configuring the interfaces, adding routes, etc), I just need help on the big picture: how everything is interconnected. I have a RHEL5 server with KVM installed and running. It has two physical NICs, eth0 and eth1 in the same VLAN. I would like to use eth1 for all traffic between the guests and the rest of the network and reserve eth0 for host management, guest migrations, etc if possible. I'm not picky about which one gets the default route, although it would be nice if we could make it eth0. All of the guests will have static IPs. I would prefer that when a new guest is added, the networking configuration only needs to be set from within the guest itself. Basically, I want this: eth0: all host traffic eth1: all guest traffic Open to any other suggestions if this isn't possible or will be kludgy/difficult. Pointers to existing documentation might not be helpful since I've already been though just about everything out there. Thanks for any help.

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• Are applications optimized for XenApp?

  - by damitamit

  Our IT dept are about to deploy virtualized apps using Citrix XenApp. One of these apps will be Dynamics AX 4.0 SP2, a ERP client (which I develop on). They have supposedly reached a roadblock because an external 'Dynamics AX Consultant' has told our IT Dept that Dynamics 4 will not work optimally on Citrix and will run very slow because it is not optimized for Citrix. We have it running in a Test environment now and seems ok. They have been told that the only 'solution' is to upgrade to Dynamics AX 2009 where supposedly this problem as been fixed. (not a small task for my team!) When I heard about this, I was quite surprised. From my brief knowledge of Citrix, I thought it would be application independent. How does the citrix app virtualization work, in that a particular app would work better than others on citrix? Would the speed of the virtualized app not just depend on the resources/network connection the citrix server has? FYI, Dynamics AX is a 3-tier client/server system, so the client will be accessing a AOS application server, which then accesses the database. Please enlighten me :)

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• SpamAssassin bayesian score discrepancies

  - by CaptSaltyJack

  This makes my brain hurt. For some reason, SpamAssassin is giving high scores to certain emails, but when I test them on the command line, they get a low score. This one particular email has this in the header: X-Spam-Flag: YES X-Spam-Score: 8.521 X-Spam-Level: ******** X-Spam-Status: Yes, score=8.521 tagged_above=-9999 required=5 tests=[BAYES_99=3.5, BAYES_999=0.2, HTML_MESSAGE=0.001, NO_RECEIVED=-0.001, NO_RELAYS=-0.001, RAZOR2_CF_RANGE_51_100=0.5, RAZOR2_CF_RANGE_E8_51_100=1.886, RAZOR2_CHECK=0.922, URIBL_RHS_DOB=1.514] autolearn=no Yet when I dump the raw email into a file msg and run sudo su amavis -c 'spamassassin -t msg', I get this output: Content analysis details: (3.8 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.5 URIBL_RHS_DOB Contains an URI of a new domain (Day Old Bread) [URIs: cliobeads.com] -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP 0.0 HTML_MESSAGE BODY: HTML included in message -0.0 BAYES_20 BODY: Bayes spam probability is 5 to 20% [score: 0.1855] 1.9 RAZOR2_CF_RANGE_E8_51_100 Razor2 gives engine 8 confidence level above 50% [cf: 100] 0.5 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50% [cf: 100] 0.9 RAZOR2_CHECK Listed in Razor2 (http://razor.sf.net/) I'm really confused as to why when the email comes in, it gets a completely different score attached to it than when I run spamassassin -t. Is there some other way I should be testing emails? Also, my users have the ability to drag false positives into a folder called "False Positives," and every day a cron job fires off that runs this on every message in every user's folder: sa-learn --dbpath=/var/lib/amavis/.spamassassin --ham /tmp/*-*.eml >/dev/null I ran sudo locate bayes_toks and there's definitely only one bayes DB on the system, in /var/lib/amavis/.spamassassin. I'm clueless, any help would be great and may help restore my sanity!

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• Body of email breaks distribution list in exchange?

  - by widgisoft

  Hi, I have a very odd problem that I'm not sure is a programming issue or a server issue :-p. Basically I'm sending an email to an exchange distribution list that includes a PHP stack trace; during certain faults the trace includes really high level information such as the machine's environment variables (during file reads, etc.). I went through a copy of the email line by line until the email sent and it appears the line: [SUDO_COMMAND] => /etc/init.d/httpd restart is the culprit. Adding a string replacement in before the email is sent allows a successful send. What I don't understand is WHY these stream of characters are causing the issue ONLY on the distribution email. If I send the email to myself as well, i.e. "[email protected]; [email protected]", then I get the email fine. Re-ordering the list doesn't make a difference the group never gets the email. Because the individual gets the email and not the group I'm assuming the fault is with exchange and some rogue filtering - I've gone through it with the sysadmins and there's no filtering of any sort on that group... so maybe it's a bug? I can't find anyone else having recorded this specific fault so I figured I'd open it here. For now I'm just not using the distribution list but it'd be nice to eventually find the solution. Many thanks, Chris

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• Updated XAMPP with MySQL, all my tables are missing

  - by user371699

  I just updated XAMPP to a newer version, which included updating MySQL from 5.5 to 5.6. Using phpMyAdmin, however, all of my tables within my databases still appear on the left navigation panel, but the main window shows that all my databases are empty (except for information_schema, and a couple other default tables.) Clicking on a table in the navigation panel gives me a "table doesn't exist" message. It does looks like information_schema.tables doesn't have my tables, either. Can anyone assist me with this? I did make a complete backup of all my databases before the upgrade, but I first want to see if I can fix this the "normal" way. Furthermore, I'm not sure if the MySQL upgrade involved making changes to the information/performance databases, so I don't know if I can restore the old ones. Thank you. EDIT: Continuing my searching, I realized that only the INNODB databases are missing. I've tried running the following with no avail: /opt/lampp/bin $ sudo ./mysql_install_db --basedir=/opt/lampp and /opt/lampp/bin $ sudo ./mysql_install_db --basedir=/opt/lampp --datadir=/opt/lampp/var/mysql The my.cnf file in /opt/lampp/etc contains the following InnoDB settings: innodb_data_home_dir = /opt/lampp/var/mysql/ innodb_data_file_path = ibdata1:10M:autoextend innodb_log_group_home_dir = /opt/lampp/var/mysql/ # You can set .._buffer_pool_size up to 50 - 80 % # of RAM but beware of setting memory usage too high innodb_buffer_pool_size = 16M # Deprecated in 5.6 #innodb_additional_mem_pool_size = 2M # Set .._log_file_size to 25 % of buffer pool size innodb_log_file_size = 5M innodb_log_buffer_size = 8M innodb_flush_log_at_trx_commit = 1 innodb_lock_wait_timeout = 50 What could possibly be wrong? Why is the information_schema not updating correctly? It looks like /opt/lampp/var/mysql has all my tables in it within the database directories, but they're still not showing up in information_schema.

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