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• What Media Extender / Centre Set up should I use?

  - by Bryn Hird

  I have installed cat6 throughout the house which I use for telephony and network. In my cellar I have a NAS Server, gigabit switch and I want to install a Media Centre to stream my video's, music, photo's and live TV (coax from the aerial to the cellar) over the cat6. Yeah I know I can get stuff on the internet but shared experience of watching TV as a family as it happens is a big plus for live TV. I'm aiming for 1080p. I want different users to be able to watch different channels. Max users = 4. I've played a little with Windows Media Centre, works fine with live TV. Likewise I have XBMC up and running with live TV. The issue I have is what do I put near the TV. I'd like a consistent user interface (grandma and the the other technophobes in the house are continually pestering me on how to use different TVs, change channel, inputs etc.) so a key part of this for me is to make the user experience the same and simple i.e. no keyboards / PCs hanging around the TV. I've just bought a Linksys DMA 2200 to test the Windows Media Centre, but obviously off eBay as they're a dying breed. And with Windows Media Centre removed from Microsoft plans such devices will get rarer. And as for 1080p, think I can forget it with that set up. I have tested XBOX 360, also works but ditto on Microsoft plans for WMC. I was thinking of a WD Live TV to test the XMBC setup. Now to the question. Any advice on Media Centre / Extender setups that will do the job as above and have some degree of futureproofing (building my own with my Raspberry PI is a last resort). I'd like to understand the standards involved in the futureproofing if anyone knows (DNLA, RVU etc.).

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• Locked out of our Comcast Business Gateway for seemingly no reason

  - by Tyler

  A little backstory... Last fall we migrated our ISP from AT&T to Comcast at one of our offices. At that time, we received a new modem/router from Comcast and we configured everything to our liking. We've never really had very many issues with the router aside from having to restart it every once in a while. Here's the problem... About three months ago I changed the password on the router from the default. After that, I logged into the router several times to make changes with no issue. During May I logged into the router to add two new static routes, no problems. A week ago, I tried to log into the router and could not. I tried the non-default password that I changed it to, the default, anything and everything I could think of and no luck. I restarted the router on Monday thinking it may just be locked up, but after the restart it would still not let me log in. This router is at our other office about 2 hours from here and I want to avoid having to drive down there and reset to factory defaults, reconfigure, etc. Any ideas?

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• What may the reason of slowness be (see details in message body)?

  - by Ivan

  I've got a really weird situation I'm beating to solve. A performance problem which looks really like an empty waiting sequence set in code (while it probably isn't so). I've got a pretty powerful dedicated server (10 GB RAM, eight Xeon cores, etc) running Ubuntu 10.04 with all the functionality services (except OpenVPN server used to provide secure access to clients) deployed in separate VirtualBox (vboxheadless) machines (one for the company e-mail server, one for web server and one for accounting/crm server (Firebird + proprietary app server working with Delphi-made clients)). CPU load (as "top" says) is almost always near zero. Host system RAM is close to 100% usage but not overloaded (as very little swapping gets used, and freed (by stopping one of VMs) memory doesn't get reused any quickly). Approximately 50% of guests RAM is used. iostat usually shows near zero %util. Network bandwidth seems to be underused. But the accounting/crm client (a Win32 Delphi application run on WinXP machines) software works hell-slow with this server (and works much better using an inside-LAN Windows server). I just can't imagine what can make it be slow if there are so plenty of CPU, RAM, HDD and bandwidth resources available on clients and on the server even in their hardest moments. Saying bandwidth is underused I not only know that clients and the server are connected to the Internet with a bigger channels than really used (which leaves the a chance they may have a bottleneck of a sort on the route between them), I've tested bandwidth between clients and the server by copying files among them.

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• Windows 8 preinstall downgrade to Win 7: UEFI problems :/

  - by Tim Flemming

  I have a friend who has a Hp Laptop with UEFI booting. He locked himself out of windows 8 (forgot his password)... so he called me. Well after trying to use the latest version of chntpw in UBCD5.2.6, i came to the conclusion i needed to wipe the drive and install windows 7. A little googling suggested using certain versions of chntpw, but i decided to not waste the time burning endless CDs. Anyway, He agreed to installing Win7 "I hate the big tile thingys". So i attacked with Gparted. Wiped the whole drive. Set flags to boot. Set part table as MBR. However upon trying to install win7, it still claimed i had a GPT style disk. unable to install. the only thing i can think of I'm doing wrong is not changing the bios/UEFI to legacy... My question is, If I enable legacy, somehow get the drive to actually be MBR, and use my X86 DVD, should I be good? Is there some common glitches ppl miss when dealing with GPT/EFI/UEFI? I need answers cuz he now has a blank laptop which I am responsible for. Another question. windows 8 came installed on a GPT disk. SO WHY WHEN I BOOT THE INSTALL DVD DOES IT SAY IT CANT INSTALL TO A GPT STYLE DISK??? WTF??? talk about the bleeding edge man.

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• Write once, read many (WORM) using Linux file system

  - by phil_ayres

  I have a requirement to write files to a Linux file system that can not be subsequently overwritten, appended to, updated in any way, or deleted. Not by a sudo-er, root, or anybody. I am attempting to meet the requirements of the financial services regulations for recordkeeping, FINRA 17A-4, which basically requires that electronic documents are written to WORM (write once, read many) devices. I would very much like to avoid having to use DVDs or expensive EMC Centera devices. Is there a Linux file system, or can SELinux support the requirement for files to be made complete immutable immediately (or at least soon) after write? Or is anybody aware of a way I could enforce this on an existing file system using Linux permissions, etc? I understand that I can set readonly permissions, and the immutable attribute. But of course I expect that a root user would be able to unset those. I considered storing data to small volumes that are unmounted and then remounted read-only, but then I think that root could still unmount and remount as writable again. I'm looking for any smart ideas, and worst case scenario I'm willing to do a little coding to 'enhance' an existing file system to provide this. Assuming there is a file system that is a good starting point. And put in place a carefully configured Linux server to act as this type of network storage device, doing nothing else. After all of that, encryption on the files would be useful too!

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• Is there any method of backing up Google Drive files in some sort of versioning system?

  - by VictorKilo

  Backstory My company is utilizing Google Drive for our shared files. Each user has their own Drive account. In addition, we have a corporate Drive account which holds documents which are shared to each user. Each folder is shared to different users depending on their permissions and positions in the company. Many users are able to add files, and updated folders within this shared Drive account. This is fine. What is not fine, is when someone deletes something that they shouldn't. I have little to no way of knowing when I file is deleted wrongfully. Furthermore, anything that gets deleted goes into the trash bin of the file's creator, so I can't just restore it from the trash. Question Is there any method of backing up Google Drive files in some sort of versioning system that would allow me to revert files back to defined points in time? What i have Tried I currently have this corporate drive account synced up to my personal computer through the Google Drive application. Each night, I run a backup on the file using Windows "Backup and Restore." This allows me to at least get back files that are lost, but I a cleaner method than this. It's very possible that I may not have the very latest version of a document on my computer when the utility runs.

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• Ubuntu - wireless connection works great but wired is totally dead

  - by Dan

  I am running Ubuntu 10.04 on my Acer Aspire One netbook. The wireless connection works great, but the wired is totally dead. When I plug the Ethernet wire, the little led next to the port doesn't blink. If I do ifconfig, this is the output: lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1659 errors:0 dropped:0 overruns:0 frame:0 TX packets:1659 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:132304 (132.3 KB) TX bytes:132304 (132.3 KB) wlan0 Link encap:Ethernet HWaddr 18:f4:6a:65:48:1f inet addr:192.168.1.7 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::1af4:6aff:fe65:481f/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:94823 errors:0 dropped:0 overruns:0 frame:0 TX packets:81390 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:93028474 (93.0 MB) TX bytes:18002558 (18.0 MB) There is no eth0. Is that normal? In the "Network Connections" GUI there is an entry "Wired connection 1", its "MAC address" field is blank. How can I make the wired connection work?

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• Certificates in SQL Server 2008

  - by Brandi

  I need to implement SSL for transmissions between my application and Sql Server 2008. I am using Windows 7, Sql Server 2008, Sql Server Management Studio, and my application is written in c#. I was trying to follow the MSDN page on creating certificates and this under 'Encrpyt for a specific client', but I got hopelessly confused. I need some baby steps to get further down the road to implementing encryption successfully. First, I don't understand MMC. I see a lot of certificates in there... are these certificates that I should be using for my own encryption or are these being used for things that already exist? Another thing, I assume all these certificates are files are located on my local computer, so why is there a folder called 'Personal'? Second, to avoid the above issue, I did a little experiment with a self-signed assembly. As shown in the MSDN link above, I used SQL executed in SSMS to create a self-signed certificate. Then I used the following connection string to connect: Data Source=myServer;Initial Catalog=myDatabase;User ID=myUser;Password=myPassword;Encrypt=True;TrustServerCertificate=True It connected, worked. Then I deleted the certificate I'd just created and it still worked. Obviously it was never doing anything, but why not? How would I tell if it's actually "working"? I think I may be missing an intermediate step of (somehow?) getting the file off of SSMS and onto the client? I don't know what I'm doing in the least bit, so any help, advice, comments, references you can give me are much appreciated. Thank you in advance. :)

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• External component has thrown an exception. ASP.NET ASPX PAGE POST

  - by Brandon

  I have an aspx page that communicates with a webservice I have. It connects to an SQL Server database on my virtual dedicated server. With just a little usage, I get this error External component has thrown an exception. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Runtime.InteropServices.SEHException: External component has thrown an exception. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SEHException (0x80004005): External component has thrown an exception.] Luxand.FSDK.Initialize(String DataFilesPath) +0 WebService.onLoad() +70 WebService..ctor() +91 facematch.btn_submit_Click(Object sender, EventArgs e) +218 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1746

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• Dell laptop keyboard doesn't work

  - by Tam

  I'm trying to fix my in-laws laptop, it's a Dell Studio 1745 that's running Windows 7 64 bit. The problem is that most of the keys on the keyboard do not work. The function keys work and the caps lock and numpad keys work, but no other keys do. If I hit the F2 key enough times when starting up, I can get to the BIOS, but after that even the function keys stop working. If I let it go all the way to the Windows login screen, I can see that the caps lock and num lock work - little images on screen actually appear, but they don't toggle the state of the key, i.e.,capslock is always off, numlock is always off. Using the fn+function combo works, so changing the brightness, etc. works fine. I'm stumped. I've tried disconnecting power and battery and leaving it for an hour or so before starting up but that hasn't helped either. Also - this might be a red herring - the touchpad is failing as well, the MS Device Manager says that it's failing with status 10, "unable to start device"

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• finding files that match a precise size: a multiple of 4096 bytes

  - by doub1ejack

  I have several drupal sites running on my local machine with WAMP installed (apache 2.2.17, php 5.3.4, and mysql 5.1.53). Whenever I try to visit the administrative page, the php process seems to die. From apache_error.log: [Fri Nov 09 10:43:26 2012] [notice] Parent: child process exited with status 255 -- Restarting. [Fri Nov 09 10:43:26 2012] [notice] Apache/2.2.17 (Win32) PHP/5.3.4 configured -- resuming normal operations [Fri Nov 09 10:43:26 2012] [notice] Server built: Oct 24 2010 13:33:15 [Fri Nov 09 10:43:26 2012] [notice] Parent: Created child process 9924 [Fri Nov 09 10:43:26 2012] [notice] Child 9924: Child process is running [Fri Nov 09 10:43:26 2012] [notice] Child 9924: Acquired the start mutex. [Fri Nov 09 10:43:26 2012] [notice] Child 9924: Starting 64 worker threads. [Fri Nov 09 10:43:26 2012] [notice] Child 9924: Starting thread to listen on port 80. Some research has led me to a php bug report on the '4096 byte bug'. I would like to see if I have any files whose filesize is a multiple of 4096 bytes, but I don't know how to do that. I have gitBash installed and can use most of the typical linux tools through that (find, grep, etc), but I'm not familiar enough with linux to figure it out on my own. Little help?

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• Correct use of SMTP "Sender" header?

  - by Eric Rath

  Our web application sends email messages to people when someone posts new content. Both sender and recipient have opted into receiving email messages from our application. When preparing such a message, we set the following SMTP headers: FROM: [email protected] TO: [email protected] SENDER: [email protected] We chose to use the author's email address in the FROM header in an attempt to provide the best experience for the recipient; when they see the message in their mail client, the author is clear. To avoid the appearance of spoofing, we added the SENDER header (with our own company email address) to make it clear that we sent the message on the author's behalf. After reading RFCs 822 and 2822, this seems to be an intended use of the sender header. Most receiving mail servers seem to handle this well; the email message is delivered normally (assuming the recipient mailbox exists, is not over quota, etc). However, when sending a message FROM an address in a domain TO an address in the same domain, some receiving domains reject the messages with a response like: 571 incorrect IP - psmtp (in reply to RCPT TO command) I think this means the receiving server only saw that the FROM header address was in its own domain, and that the message originated from a server it didn't consider authorized to send messages for that domain. In other words, the receiving server ignored the SENDER header. We have a workaround in place: the webapp keeps a list of such domains that seem to ignore the SENDER header, and when the FROM and TO headers are both in such a domain, it sets the FROM header to our own email address instead. But this list requires maintenance. Is there a better way to achieve the desired experience? We'd like to be a "good citizen" of the net, and all parties involved -- senders and recipients -- want to participate and receive these messages. One alternative is to always use our company email address in the FROM header, and prepend the author's name/address to the subject, but this seems a little clumsy.

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• 'Future-proof' Live Audio Capture & Broadcast [migrated]

  - by maxpowers

  I'm looking to implement some live audio broadcasting functionality within a Ruby on Rails site for a client and was hoping I could get some input from people who have tackled this type of thing before. Essentially what I need to do is capture and record a user's audio (via microhpone, line in, etc), then stream that to 1,000+ listeners with very little latency, like sub 2 second if possible. So it looks like we've got 3 parts: Web-based audio capture (likely with Flash or JS) Server to accept audio feed and stream to listeners (likely Icecast or Wowza) Actual audio player (maybe HTML5 w/ Flash as a fallback? Maybe this jPlayer fork) Does RTMP makes sense here? Or maybe HTTP? What's the most 'future-proof' way to make this happen? Building with mobile in mind, but still want to be able stream to anyone. I've found lots of potentially helpful threads and software but I'm struggling to get an idea of how it all fits together. I'm a front end guy and way out of my comfort zone so if anyone has insights to offer, I'd love to hear them.

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• Lotus Notes 8.0.2 - how to stop all mail showing in customized view

  - by mikolajek

  I am using Lotus Notes 8.0.2 at work and unfortunately the admin restricted changing default folders design. Only little changes are possible (e.g. change columns order) and even them are resetted each time I restart the client. I've created a new view with my desired column order, changed sorting etc. I have only one problem - even though I changed the "view" preference to show messages from the inbox folder only, I keep seeing all mail, regardless of the folder they are placed into. I'm not a Lotus expert and don't really know how to code. Yet, I am surprised as I see in a "simple view" this: uses '(ChangeMeetingType), ...' form AND In folder 'Inbox' And in Formula view only this: SELECT ((Form = "(ChangeMeetingType)") | (Form = "(Return Receipt)") | (Form = "Return Receipt") | (Form = "(ReturnNonReceipt)") | (Form = "ReturnNonReceipt") | (Form = "Memo") | (Form = "Memo") | (Form = "MemoEA") | (Form = "Reply") | (Form = "Reply") | (Form = "Reply With History") | (Form = "Reply With History") | (Form = "To Do") | (Form = "Task") | (Form = "_Document Memo") | (Form = "$DocMemo") | (Form = "Word. Document$Word Memo") | (Form = "WordPro. Document$Word Pro Memo") | (Form = "AlternateMemo")) Therefore, it looks like no folder has been really selected. How can I create a solution to see: Inbox contents only? Just messages, invitations and other "normal" stuff - without calendar entries and contacts?

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• What LPR arguments do I need to print a 1400x800 pixel image on a 4x6 label?

  - by Nick

  This is driving me nuts. UPS sends our system a 1400x800 GIF image of a shipping label, which is supposed to fit nicely on a 4x6 page. Unfortunately, I can't seem to get the command line options right to make it happen. We're using an Eltron/Zebra 2844 with a network adapter, and printing from our Ubuntu 8.04 server using CUPS. We're using the correct drivers, and test pages print correctly. No matter what I try though, it insists on printing the UPS labels accross 6 pages, with a little bit of the label on each page, or way too small. I've tried a bazillion different lpr settings, most of them producing garbage. The closest I've gotten is this: lpr -P Eltron2844 -o natural-scaling=55 -o page-right=0 -o page-left=0 -o landscape -o media="4x6" ./1ZY437560399620027.gif but it causes the image to be too small on the page. It's about an inch too short, and there's a 1/2" margin on both sides. If I bump the scale up to 56, it explodes the image onto two pages, and squashes it. Any ideas?

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• Multiple Routers, Failover, DHCP and multiple gateways. NOT WAN-failover

  - by u_b

  I've had a look around google and this forum but could not find an answer to my question. So probably one of you can help me a little. My intended setup is: Router R1: wan connection to isp. connected backup server. provides some wireless SSID. other connected devices like printer, laptop, etc. both wired and wireless. Router R2: no wan connection to isp but connected to R2. connects mp3-streamer and music server. also serves as a wireless access point with same SSID. other than described connections only wireless connections. I would like to be able to control music even if R1 is off, e.g. with no internet connection. On the other hand I would like to access internet also in the case that R2 is off, i.e. no music access. Last but not least I would like to stream internet radio, i.e., R1 and R2 are on, and music is streamed from internet to R1 to R2 to streamer. I would like to realize all this using DHCP (also using static assignments) so i do not have to configure statically on android, laptop, etc. So my questions are: Can I make DHCP provide a list of two default gateways R1,R2? In order to make clients fallback to other gateway if currently assigned gateway is turned off? Thanks in advance, u_b

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• Windows 7 Media Center: sometimes no sound on a TV channel

  - by torbengb

  Problem Sometimes, recorded TV shows have no sound. This is of course very annoying because the recorded show is worthless. Also, when switching channels while watching live TV, sometimes a channel has no sound. This is always solved by switching channel again and then back (most often, once will do the trick). Media Center doesn't do this trick by itself when recording of course, so that's the bigger issue - but the cause is certainly the same. Details The computer is running a newly installed Windows 7 and Windows Media Center. It has 2 different tuner-cards installed. Both are installed with signed and up-to-date Win7 drivers and appear OK in Device Manager. Both tuners get the same antenna signal, from a split cable from the wall. The cable delivers analog cable TV (40+ channels) and digital cable TV (4 channels) at the same time. Both tuners have been configured to receive both analog and digital channels. This only happens with analog channels. How can I fix the no-sound problem? Update: I've now spent some time with the computer to try and pinpoint the problem, but I've had little success so far: I flipped through the channels until one didn't have sound, then I disconnected the antenna cable from one of the tuners. It was the right one because then the video also went away. I flipped lots more channels to see if the other card also would come up mute once but I never had a channel without sound. It might still be possible, I don't know. Then I disconnected the "good" tuner and connected the "bad" tuner and again flipped lots of channels but again I never had a channel without sound. It seems to me that the problem is erratic. It happens on any channel, and I haven't ruled out yet that it only happens on one tuner.

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• MS Word TOC that references # pages rather than page number

  - by buttonsrtoys

  We frequently need to write specifications in Word which require a TOC that refers to the total number of pages in a section, rather than the page number. E.g., Section No. Pages 01010 Summary of Work..............5 01025 Prices.......................2 01400 Quality Control..............1 01700 Contract Close Out...........2 A wrinkle is that each section is a separate file. To date, we've been writing or TOC by hand, which has introduced every error imaginable. Is there an MS feature that populates a TOC with page totals? If not, I've done a little VB in Office, so wouldn't be opposed to that route as need be, as long as it was usable by our low tech users. Related question - all the section files are in the same folder. It would be nice if the TOC loaded every file in a folder, rather than having to specify each one. Is this a feature of Word or would this require VB? We tried a master document with links to subdocuments, but since the number of section files ebbs and flows with each project, the approach required too much maintenance for our Wordophobes.

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• NAT via iptables and virtual interface

  - by Alex

  I'm trying to implement the following scenario: One VM-host, multiple guest VMs, each one gets its own IP-address (and domain). Our server has only one physical interface, so the intended use is to add virtual interfaces on eth0. To complicate our situation the provider uses port-security on their switches, so I can't run the guest interfaces in bridged mode, because then the switch detects a "spoofed" MAC-address and kills the interface (permanently, forcing me to call the support, which I'm sure will get them a little bit angry the third time ;) ). My first guess was to use iptables and NAT to forward all packages from one virtual interface to another one, but iptables doesn't seem to like virtual interfaces (at least I can't get it to work properly). So my second guess is to use the source IP of the packages to the public interface. Let's assume libvirt creates a virbr0-network with 192.168.100.0/24 and the guest uses 192.168.100.2 as IP-address. This is what I tried to use: iptables -t nat -I PREROUTING --src public_ip_on_eth0:0 -p tcp --dport 80 -j DNAT --to-destination 192.168.100.2:80 That doesn't give me the intended results either (accessing the server times out). Is there a way to do what I'm trying to do, or even to route all traffic to a certain IP on a virtual interface to the VM's device?

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• MongoDB and GrifFS. What are the best storage options in the range of 1 TB?

  - by Nerian

  We are going to launch a service that will require between 1 and 2 GB for file storage per paid user. I am going to use GridFS for storing files. I am pondering the different options for storing the database. But since I am unexperienced at deployment and it is my first time with Mongodb I need your experience. Criteria: I want to spend my time developing my core business, that is, my own application. I am a Ruby on Rails developer. I do not like to mess with server configuration. Hence, I would like a fully managed hosting solution. But I would like to know about any other option, if you think it is worth it. It should be able to scale. Cloud style. Pay as you go. The lower the price, the better. So far I known of these services: https://mongohq.com/pricing https://mongomachine.com/pricing https://mongolab.com/about/pricing/ http://cloudcontrol.com/add-ons/mongodb/ And they seem to be OK for common needs, that is no file storage. But I am going to use GridFS, so the size matters. These services seems to scale, in price, quite poorly. MongoHQ: The larger plan max storage is 20 GB. Seems like a very little storage, for GridFS. MongoMachine: Flat price, 2.5$ per GB. I didn't found the limit. Seems like a good price, comparing the others. MongoLab: 3.984 GB max, which I don't think I will hit, so perfect. 8$ per GB, quite costly. CloudControl: The larger plan is 20 Gb. The custom service starts at 250€ plus some unspecified charge per GB. What is your experience with these services? Any downtimes? Other possibilities?

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• Get Matrox Millenium video card working in Ubuntu 9.10

  - by wcoenen

  I have installed Ubuntu 9.10 on an old PC and it is mostly working, except for some heavy drawing defects that show up whenever I start dragging a window or scrolling inside a window or menu. It looks like the video driver copies the rectangle being moved to the wrong location. I have taken a look in /var/log/Xorg.0.log and the following line shows the detected video card: (--) PCI:*(0:0:8:0) 102b:0519:0000:0000 Matrox Graphics, Inc. MGA 2064W [Millennium] rev 1, Mem@ 0xf9800000/16384, 0xfb000000/8388608, BIOS @0x????????/65536 (==) Using default built-in configuration (30 lines) (==) --- Start of built-in configuration --- Section "Device" Identifier "Builtin Default mga Device 0" Driver "mga" EndSection How do I fix the drawing defects? It turned out that the 24 bit color depth (automatically selected by ubuntu 9.10) was the problem; apparantly the mga driver doesn't handle this well for cards with little memory. I took the following steps to resolve the issue (you can skip the first three steps if you already have a semi-working xorg.conf file): Reboot ubuntu in recovery mode, to get a root console without X running. Run Xorg -configure to generate a xorg.conf.new file Copy the file to /etc/X11/xorg.conf with cp xorg.conf.new /etc/X11/xorg.conf (assuming it didn't exist yet; that's why I generated it) Open the new config file with sudo nano /etc/X11/xorg.conf and make sure the screen section is configured for 16 bit color depth like this: Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" DefaultDepth 16 SubSection "Display" Viewport 0 0 Depth 16 Modes "1024x768" EndSubSection EndSection I can't guarantee those were the only important changes I made - I tried a few things in my attempts to create a valid xorg.conf file. But I'm pretty sure that the screen section was the important part.

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• HP/IBM alternative to Buffalo iSCSI TerraStation?

  - by Robin Day

  I'm looking at virtualising some of our infrastructure in order to allow for more resiliance and future expandability. We have successfully virtualised on single servers with Direct Attached Storage and are now looking for a more future proof solution using a high powered host (or two) and a SAN (or two). I'm thinking that the host machine will probably be an HP ProLiant DL360 G7 (all of our exisiting infrastructure is HP). Unfortunately, I am new to the world of SANs. From what I can see, the Buffalo Terrastation III is all I would need in order to setup an iSCSI SAN for VMWare to use. However, I'm a little reticent to go that way as it's a bit too "entry level" for my liking. In particular I would be very keen for more redundancy, power, networking, etc. I'm also very aware that you "get what you pay for". Therefore, can anyone reccommend equivalents from the big boys? HP/IBM? I have searched high and low on the HP site and seen many options but am struggling to work out if it is all the hardware I will need. Some options appear to need separate controllers from disk enclosures, etc.

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• What does it mean to install two OS's alongside each other?

  - by Josh

  I currently have Windows 7 installed on my PC. However, I just tried out Ubuntu via booting from a disc and I love it. I want to install it onto my HDD, but I don't want to get rid of Windows 7. I know HOW to do this, but I am a little unsure what the consequences might be. What does it mean to install Ubuntu alongside Windows? Do they share the same resources? Also, I have my HDD already partitioned into two sections, a 70 GB section where Windows is installed and then another 400 GB section where all my data is stored. There is currently 26 GB free on the 70GB partition. I know Ubuntu doesn't take up much space. However, if I install Ubuntu in that space, will I still be able to install programs on Windows in the future? My main concern is that I am going to short-change my hard drive space for future installations. EDIT: I guess another big question I have is if I install a program on one OS, will the other be able to use it?

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• Setup shared internet connection on virtualbox with fixed IP

  - by Tom

  I am a web developer and until recently I have been using ubuntu as my OS. For many reasons, I have switched back to windows. I still want to keep my server on linux platform, so I setup my local server as a virtual machine. Everything works great, but i have a little struggle with the networking. Since I am working in different places and going around clients, I connect to all sorts of network with different settings. That means the possible IP range is very dynamic which causes issues when I work on my local server. At the moment I have a dynamic IP on my host and static IP on my guest. That way I can access the server from my host (by adding record to hosts file). I also have internet connection on the guest. But once i change networks, it does not work (assuming the network has different configuration). My question is, how to setup host-guest networking, so no matter what network I connect to, I can keep my static IP on guest, which is registered in hosts file on my host so I can access the webserver and also I will have internet connection on the guest? Hope it make sense. Thank you

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• How to optimize a postgreSQL server for a "write once, read many"-type infrastructure ?

  - by mhu

  Greetings, I am working on a piece of software that logs entries (and related tagging) in a PostgreSQL database for storage and retrieval. We never update any data once it has been inserted; we might remove it when the entry gets too old, but this is done at most once a day. Stored entries can be retrieved by users. The insertion of new entries can happen rather fast and regularly, thus the database will commonly hold several millions elements. The tables used are pretty simple : one table for ids, raw content and insertion date; and one table storing tags and their values associated to an id. User search mostly concern tags values, so SELECTs usually consist of JOIN queries on ids on the two tables. To sum it up : 2 tables Lots of INSERT no UPDATE some DELETE, once a day at most some user-generated SELECT with JOIN huge data set What would an optimal server configuration (software and hardware, I assume for example that RAID10 could help) be for my PostgreSQL server, given these requirements ? By optimal, I mean one that allows SELECT queries taking a reasonably little amount of time. I can provide more information about the current setup (like tables, indexes ...) if needed.

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