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• DHCPD (Slackware) - Disabling auto-generation of gateway as DNS server

  - by Dogbert

  Good day, I am using a Linux workstation on Slackware 13.37. One "problem" I have had to deal with ever since 11.0 is the following: DNS servers are queried and determined at startup by DHCP daemon (DHCPD) This is invoked at startup by a script located at /etc/rc.d/rc.dhcpd My DNS servers for my ISP are resolved correctly, and are stored in a list located at /etc/resolv.conf However, the one annoying problem is that my gateway IP (ie: 192.168.1.1) is always automatically put at the top of the list in resolv.conf, meaning I have to always wait for a timeout before a valid DNS server is used to resolve an address (ie: timeout on 192.168.1.1 because it is not actually a DNS server, then DHCP uses the next server in the list). I could lower my DNS resolution timeout so the gateway query times out quicker, but that's not what I want, as I don't want to degrade the abilities of legitimate DNS servers. What I would like to do is change how DHCPD operates so that it does NOT put my gateway IP address at the beginning of this list. I've searched via "man dhcpd", etc, and haven't found the exact answer yet. Any help on this issue is appreciated. Thank you all in advance for your time and assistance.

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• Performance experiences for running Windows 7 on a Thin-Client?

  - by Peter Bernier

  Has anyone else tried installing Windows 7 on thin-client hardware? I'd be very interested to hear about other people's experiences and what sort of hardware tweaks they had to do to get it to work. (Yes, I realize this is completely unsupported.. half the fun of playing with machines and beta/RC versions is trying out unsupported scenarios. :) ) I managed to get Windows 7 installed on a modified Wyse 9450 Thin-Client and while the performance isn't great, it is usable, particularly as an RDP workstation. Before installing 7, I added another 256Mb of ram (512 total), a 60G laptop hard-drive and a PCI videocard to the 9450 (this was in order to increase the supported screen resolution). I basically did this in order to see whether or not it was possible to get 7 installed on such minimal hardware, and see what the performance would be. For a 550Mhz processor, I was reasonably impressed. I've been using the machine for RDP for the last couple of days and it actually seems slightly snappier than the default Windows XP embedded install (although this is more likely the result of the extra hardware). I'll be running some more tests later on as I'm curious to see particularl whether the streaming video performance will improve. I'd love to hear about anyone's experiences getting 7 to work on extremely low-powered hardware. Particularly any sort of tweaks that you've discovered in order to increase performance..

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• Installing Debian 7.1 on FakeRAID/Intel Z77 results in boot with no grub menu

  - by user198982

  I'm trying to install Debian 7.1 from DVD onto 2x500GB drives which are set up in a FakeRAID mirror using the on-board FakeRAID provided by the Z77 chipset. I have followed the guide here https://wiki.debian.org/DebianInstaller/SataRaid. Namely, I booted into the expert install with the 'dmraid=true' option added, installed onto the RAID mirror which the installer correctly detected, then installed grub2 onto /dev/mapper/.. raid volume. I chose to use LVM (so a boot partition + LVM volume). As per the guide, I have uncommented the "GRUB_DISABLE_LINUX_UUID=true" line in "/etc/default/grub" and ran "update-grub" then "grub-install /dev/mapper/.." (with the right RAID device in the command). However, after I rebooted the system, all I got was a grub console. It did not load the menu. I checked and it seems that it never even generated a menu file. I re-installed Debian a few times since, trying out different options and also a few workarounds people posted online, but to no avail. The best I am getting is a grub console. No menu. Some times it will generate the grub.cfg, some times it won't, depending on the workaround I try. I was wondering if anyone else has experienced this issue. There is no need to preach how I should not use FakeRAID. I have seen others trying to figure this out so I think a resolution to this issue would be of interest to more than just me. Also, I first installed the system onto a small drive for testing something else. I made a backup with Acronis and was able to restore that onto the RAID mirror by using Universal Restore. When I installed it onto a 500GB without RAID, backed up using the same method, then restored onto a RAID volume of the same size, it would not boot and I got grub errors. Weird. I can post more details, just let me know what you want to see.

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• Are there any viable DNS or LDAP alternatives for distributed key/value storage and retrieval?

  - by makerofthings7

  I'm working on a software app that needs distributed decentralized name resolution, and isn't bound to TCP/IP. Or more precisely, I need to store a "key" and look up it's value, and the key may be a string, a number, or any other realistic data type. Examples: With a phone number, look up a name. (or with an area code, redirect to the server that handles that exchange) With an IP Address get a DNS name, or a Whois contact (string value) With a string, get an IP, ( like a DNS TXT or SRV record). I'm thinking out of the box here and looking for any software that allows for this. (more info below) Are there any secure, scalable DNS alternatives that have gained notoriety? I could ask on StackOverflow, but think the infrastructure groups would have better insight on this. Edit More info: I'm looking at "Namecoin" the DNS version of Bitcoin, and since that project is faltering, I'm looking at alternative ways to store name-value pairs, with an optional qualifier. I think a name value pair is of global interest is useful, but on a limited scale. Namecoin tried to be too much, and ended up becoming nothing. I'm trying to solve that problem in researching alternatives and applying distributed technologies where applicable. Bitcoin/Namecoin offers a Distributed Hash Table, which has some positive aspects, but not useful for DNS, except for root servers.

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• How can I avoid my web browser from redirecting to localhost using WAMP in Windows7?

  - by Josh

  I'm currently using Windows 7 with WAMP to try and work on some software, but my web browsers will not accept cookies from the "localhost" domain. I tried creating a few bogus domains in my hosts file by pointing them to 127.0.0.1 but when I type them in I am automatically redirected back to localhost. I have also configured virtualhosts in apache to correspond with the domains I added to the hosts file and it still redirects back to localhost. Is there anything special I must do on Windows 7 to get around this localhost redirect? Thanks for looking :) I'll include my host file here: # Copyright (c) 1993-2009 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a '#' symbol. # # For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host # localhost name resolution is handled within DNS itself. # 127.0.0.1 localhost # ::1 localhost 127.0.0.1 magento.localhost.com www.localhost.com Thanks for looking :)

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• Dual DC Time Service

  - by poconnor

  I believe I'm having an issue with my Domain Controllers and Time Server. On my back up DC, I keep seeing a warning stating "The time service has stopped advertising as a time source because the local clock is not synchronized." Does this mean that my backup DC believes it's a Time Server? My PDC should be the time server and I have gone through setting up the PDC as the time server. I was not around for the original setup of the time server with the old PDC and Backup DC. But I believe the old PDC was the time server so I setup the new PDC as the new time server, when I decommissioned the old PDC. Is it possible that the Backup DC was setup as the time server and it still thinks it's suppose to be giving out time to everyone? Registry for PDC has NTP Registry for Backup has NT5D5 Results of w32tm /monitor Getting AD DC list for default domain... Analyzing:delayoffset from DC1.local..com Stratum: 4 delayoffset from DC1.local..com Stratum: 3 Warning: Reverse name resolution is best effort. It may not be correct since RefID field in time packets differs across NTP implementations and may not be using IP addresses. DC2.local..com[192.168.1.8:123]: ICMP: 1ms NTP: -0.6349491s RefID: DC1.local..com [192.168.1.9] DC1.local..com *** PDC ***[192.168.1.9:123]: ICMP: 0ms NTP: +0.0000000s RefID: wwwco1test12.microsoft.com [65.55.21.20]

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• Centos 6.2 postfix install dependency issues

  - by Mishari

  I am administrating a VPS running cPanel and I'm trying to install postfix. Redhat-release says the version is CentOS release 6.2 (Final) and uname -a says: Linux server.mydomain.com 2.6.32-220.el6.i686 #1 SMP Tue Dec 6 16:15:40 GMT 2011 i686 i686 i386 GNU/Linux This is how I'm installing postfix (I had tried to solve the problem earlier by installing epel). # yum install postfix Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile * epel: mirror.cogentco.com Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package postfix.i686 2:2.6.6-2.2.el6_1 will be installed --> Processing Dependency: mysql-libs for package: 2:postfix-2.6.6-2.2.el6_1.i686 --> Finished Dependency Resolution Error: Package: 2:postfix-2.6.6-2.2.el6_1.i686 (centos-burstnet) Requires: mysql-libs You could try using --skip-broken to work around the problem Attempts to install mysql-libs tells me several files conflict with "MySQL-server-5.1.61-0.glibc23.i386" I'm not sure why or how this is happening, does anyone know how to resolve this? Surely Centos 6.2 could not have shipped with a broken postfix.

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• Some Apps don't start on Windows 8 Release Preview

  - by Exa

  I recently installed the Release Preview of Windows 8 in a virtual machine. Some apps do not work. When I open them (by clicking on their tile in the start screen) I see a splash screen and nothing else happens. Sometimes the app crashes after 30 seconds, sometimes it just keeps on loading. A good example is the "Map"-App from Windows 8 or the app "Cookbook" by Bewise. I installed Cookbook and when I had a look at the task manager I saw that it was the 32bit version running, but I have an x64 Windows 8... Could this be a problem? Shouldn't the Windows Store download the correct version? This is the setup of my virtual machine: Windows 8 Release Preview x64 Oracle VirtualBox 4 of 8 cores from host system 8 of 16 GB RAM from the host system 256 MB graphics memory guest additions installed resolution 1920 x 1080 Do you need further information? Unfortunately there is no error message... I just see the start screen of the app with its logo and it keeps loading, but nothing happens. Other Apps (like Mail, Video, Social, etc.) work fine.

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• Weird glitches on Intel iGPU

  - by FrederikVds

  I have a weird problem that I can't manage to describe in one word, so I'm having trouble searching for a solution. My monitors sometimes go black for a tenth of a second. Other times, they show the image shifted a few centimeters to the left or to the right. This happens on both of my monitors, but not necessarily at the same time. I would say it happens about once a minute, unless under heavy load, in which case it can happen every second or so. Interestingly, heavy CPU/memory usage can also cause this, not just heavy GPU usage. This only happens when they are both at 1920x1080, not when one of them, or both, are at a lower resolution. It also happens when they are in mirrored mode instead of extended desktop mode. My GPU is obviously not at full clock speed most of the time: this happens at 350 MHz as well as at 1200 MHz. So it doesn't seem like a matter of too little performance. I'm not seeing any traditional artefacts, even when I use MSI Kombustor, only this kind of full-screen glitches. CPU stressing software isn't reporting any issues either. I'm thinking maybe the connection between my CPU and my PCH isn't fast enough, but I can't find anyone with the same problem to confirm that. I'd rather not invest in a discrete GPU without being certain it will fix something. Does anyone know how to search for this, or even better, does anyone have a solution? My full specs are below. Thanks in advance! Specs: ASUS P8Z77-M Intel Core i5-3570K (with Intel HD 4000 Graphics) 2x4 GB AMD Performance Edition memory Corsair Force 3 Series Rev. B 120GB SSD Maxtor 200GB HD Lite-On DVD-RW Antec 350 Watt PSU 64-bit Windows 7 Professional 2x Iiyama ProLite E2208HDS display

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• Windows 7 hangs on black screen for a while after log in

  - by steini

  I get the welcome screen. I click on my user and get the "logging on" screen. After that all I get is a black screen with a mouse cursor. I can't even start task manager. No ctrl+alt+del or ctrl+shift+escape. It stays like this for about 10 minutes, then the desktop finally starts loading. According to the hdd led on my case, windows isn't even trying to access the hard drive for that whole time. It's just hanging doing nothing it seems. What I have tried: Uninstalled video driver and removed leftovers with driver sweeper Disabled all startup programs and non microsoft services Loaded "last known good configuration" Ran the alleged "black screen fix" from prevx against my best judgement (don't really like running random exes without knowing what they do at all) None of that works. I can boot into safe mode normally. My specs: i7 920 Gigabyte X58-UD3R Gigabyte HD5870 1GB 12GB Mushkin Silverline 1333MHz Windows 7 Ultimate x64 I'm also having another problem which I suspect is related. After I have gotten the computer up and running, everything works perfectly, but when it's been on for a while it starts behaving strangely when changing display modes. When I start up a game or anything that changes the screen resolution the computer freezes for about a minute every time until I reboot again. I think this is probably related to the black screen problem. Just thought I'd check to see if anyone has had the same problem. Let me know if I should post any more details about my system to help diagnose this. Thanks in advance.

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• Windows 7 - Can't get my TV working as primary display with nVidia 7900GS

  - by Daniel Schaffer

  I just installed Windows 7 Ultimate 64 RTM (from MSDN) on my HTPC, which is connected to a 42" Magnavox LCD TV via component cables to my nVidia 7900GS. Everything was fine through the installation until I went to install the official driver from nVidia. Towards the end of the installation, the TV blinked off and wouldn't come back on. I went and got an LCD monitor and plugged it into a DVI port and the monitor came right up, but was automatically selected as the primary display. Now, if I set the TV to be the primary display, the TV just blanks until I hit escape to cancel the "settings have changed, do you want to keep them" dialog. Any suggestions? Update: I'm able to set the TV as the primary display using the Windows 7 "screen resolution" configuration panel. However, if I try to remove the LCD monitor either by unplugging it or using the configuration, the TV blanks out again. Update 2: This setup was working correctly in Vista Home Premium 32-bit. Update 3: I've uninstalled the nVidia driver and am using the driver that Windows Update installed. As much as this offends my geek sensibilities (must use the "right" driver!!), well, It Works™.

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• Software/hardware to build video streaming server?

  - by Sasha Yanovets

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

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• 85 Hz on old/new driver looks the same like 75 Hz on previous one?

  - by jon

  I have old philips 107T5 CRT and Nvidia graphics card. I used old Nvidia driver (but it wasn't 'legacy' one when I installed it) for few years but recently I decided to install other Linux distribution. I used 75 Hz refresh rate and 1024x768 resolution on my previous distribution. After I installed the new distribution I had to install a Nvidia driver so I downloaded one from the Nvidia site (this time only legacy supported my card so I downloaded legacy and installed it). It wasn't automatically updating xorg.conf but I had my previous xorg.conf copy and I used it. When I run X I could only choose 85 and 75 Hz, 85 was checked as default. And now what shocks me: that default 85 Hz looks identically like 75 Hz on previous driver looked (at least to me). I tried 75 Hz out of curiosity and it's too bright, hurts, etc. But on the previous driver 75 Hz wasn't hurting my eyes. Why is it different? It's the same number after all, so it should always give the same results, right? That's my first question. Second question: Is 85 Hz OK for that monitor model? Would it break it? I tried to find the optimal refresh rate for this model but couldn't find it.

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• Certain websites redirect to 127.0.0.1. How do I fix this?

  - by Dian

  Facebook and Youtube in particular. Tried nslookup the address shows as 127.0.0.1. Checked the HOSTS file, it's fine. Ran Malwarebytes' Anti-Malware (didn't find any problems) and SpyBot Search and Destroy (found 1 problem). (Not sure if the Spybot made this improvement) now pinging youtube shows the correct address (74.125.71.91) but the browser still says: Connection to 127.0.0.1 Failed The system returned: (111) Connection refused Tried ipconfig /flushdns but there are no changes. Switched to another user but the results are the same. hosts file: # Copyright (c) 1993-2009 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a '#' symbol. # # For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host # localhost name resolution is handled within DNS itself. # 127.0.0.1 localhost # ::1 localhost ipconfig all: Connection-specific DNS Suffix: DNS Servers: 10.1.1.30 208.67.220.220

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• External Dell Display doesn't work with MacBook Pro (2011) after Thunderbolt Firmware Update (1.0 and 1.2)

  - by tom

  Today two Thunderbolt Firmware Updates (1.0 and 1.2) became available for my MacBook Pro (Early 2011). After installing both, my external monitor, a Dell U2713HM, does no longer work. The system detects the display, but the display shows only black. An Apple Thunderbolt display works fine and a MacBook Air can use the Dell monitor without problems. My MacBook Pro can use the Dell monitor just fine when I boot from a USB stick. Therefore, clearly the Thunderbolt Firmware Update seems to be the problem. Does anyone have the same problem? Any solutions or workarounds? I guess there is no way to remove a Thunderbolt Firmware Update once it's installed, right? Update 24.10.2013: Is there no one else with this problem? In the meantime I tried three different cables – none worked. My colleague with the same generation MacBook Pro also can't use my display after installing the firmware update. All colleagues with MacBook Airs and newer MacBook Pros (all didn't receive the firmware update) can use the display. Update 29.10.2013: Wow, ok today my new MacBook Pro Retina 13' (Late 2013) arrived. Guess what, I cannot use the display with it. Only HDMI works – not with the full resolution.

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• Can't access site internally, but DNS works

  - by BloodyIron

  1) I have apache2 running a vhost for a website. 2) This apache2 instance is already successfuly setup for other websites on it to be accessible internally and externally. 3) I am using an internal bind9 server to resolve the new website's domain internally to the private IP. This bind9 server is not public facing, nor is it the master server on the internet. 4) The DNS internally resolves to the right IP. 5) Firefox reports "server not found". 6) I have copied the config almost identically to other configs that are known to work (adjusting for proper paths of course). In turn I have reloaded and restarted apache2 repeatedly. 7) I have an entry to forward .org .info .net alternative TLDs to .com in the vhost config for this domain, and my browser goes from .org to .com despite note #5. 8) /var/log/apache2/access.log shows when someone externally tries to access the site, but no activity is observed when someone tries to access internally. Changing the log level does not appear to improve the situation. 9) I am out of ideas, nothing appears to be wrong. Please help? To be explicit. Why is this new site unreachable internally? I would like to clarify on something, even though I have already outlined this. YES I know this system is in a private network. NO it is not going through a router. YES I am using an internal DNS server (bind9) to resolve, and YES it does resolve to the proper internal IP. YES other websites on the same server setup in the same way with internal resolution work right now and have done for a while. Everything for this domain is setup the same as the other working domains as far as I can tell. The other working domains are internally AND externally accessible. This domain I am working with is only currently externally accessible. When I go to it internally firefox tells me "Server not found".

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• yum trying to install el5 when I am on el6

  - by giorgio79

  When I run the following yum command I get this error: Package: git-1.7.10.1-1.el5.rf.x86_64 (rpmforge) Requires: libcurl.so.3()(64bit)" I read that this error is due to running an el5 rpmforge or having some el5 installed packages. How can I solve this problem? $ yum install git Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.kiewel-online.ch * epel: fedora.kiewel-online.ch * extras: centos.kiewel-online.ch * rpmforge: mirror.de.leaseweb.net * updates: centos.kiewel-online.ch Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package git.x86_64 0:1.7.10.1-1.el5.rf will be installed --> Processing Dependency: perl-Git = 1.7.10.1-1.el5.rf for package: git-1.7.10.1-1.el5.rf.x86_64 --> Processing Dependency: perl(Git) for package: git-1.7.10.1-1.el5.rf.x86_64 --> Processing Dependency: libexpat.so.0()(64bit) for package: git-1.7.10.1-1.el5.rf.x86_64 --> Processing Dependency: libcurl.so.3()(64bit) for package: git-1.7.10.1-1.el5.rf.x86_64 --> Running transaction check ---> Package compat-expat1.x86_64 0:1.95.8-8.el6 will be installed ---> Package git.x86_64 0:1.7.10.1-1.el5.rf will be installed --> Processing Dependency: libcurl.so.3()(64bit) for package: git-1.7.10.1-1.el5.rf.x86_64 ---> Package perl-Git.x86_64 0:1.7.10.1-1.el5.rf will be installed --> Finished Dependency Resolution Error: Package: git-1.7.10.1-1.el5.rf.x86_64 (rpmforge) Requires: libcurl.so.3()(64bit) You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest

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• Monitoring instantaneous network throughput at one second intervals?

  - by Shaddi

  For a testing setup I have, I need to monitor the throughput through a "router"* at regular intervals of around 5 seconds or less (sub-second intervals would be very nice, but not required). Ideally, I would be able to generate a file which contained both the number of bytes and packets seen during each interval. I will eventually be generating a time-series of throughput from this data. On a previous setup using an older version of FreeBSD, there was a tool called "bpfmon" which gave me this information. However, I need to do this under a modern version of Linux (namely, Ubuntu 11.04). I have looked at both iptraf and iftop, but these do not appear to provide the resolution I need, nor do they seem to easily allow scraping the data I need. I understand iptables statistics may be able to give me what I'm after, but the examples I've seen of this seem to rely on repeatedly reading and resetting traffic counters, which seems like it could give inaccurate as read/reset is not an atomic operation. I already capture a tcpdump trace of the traffic I'm interested in on the link I want to monitor, so I am open to approaches which simply parse that. I feel like this must be a common problem though, so I am hoping there will be a standard "best practice" tool for accomplishing this. *I say "router" in quotes because I am really talking about a machine with two bridged NICs through which all the traffic I'm interested in passes.

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• Help configuring Mercury mail or similiar with XAMPP to send e-mail outside of localhost

  - by user291040

  I'm building a PHP/MySQL driven website for my department at work (installed via XAMPP). I need to be able to send mail to outside e-mail addresses (e.g., Yahoo, Hotmail, etc.) using the PHP mail() function. As I see it I have to solutions: Configure the SMTP directive in php.ini to the server running at my work. Configure/run a mail server that can send e-mails outside of localhost (I'm trying Mercury because it comes installed with XAMPP). Here are problems I've come up against: I took a guess at our SMTP server name, and when calling PHP mail(), I get the error SMTP server response: 530 5.7.1 Client was not authenticated I can't be sure, however, the SMTP name is correct (I can't get help from our IT guys because of politics). I have tried to use mercury mail. Mercury seems to be picking up the request, but it doesn't want to forward the e-mail to the outside. I keep getting a Temporary error 240 (temporary MX resolution error). I've searched high and low but still can't find a definitive answer on how to send e-mails outside of localhost. Any help is greatly appreciated.

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• "Document in ADF" on Canon MX340

  - by Michael Donohue

  I have a Canon MX340 multifunction printer. Recently, it keeps saying "Document in ADF" when I turn on the printer. I've tried clearing this multiple times, but as soon as the feeder wheels stop turning, in an attempt to clear the document feeder, it just pops up the same error again. This is particularly annoying, as it blocks all functions on the device - I cannot print, even though printing has no interaction with the document feeder. I've opened up the feeder device, as much as can be done with fingers alone. There just doesn't seem to be anything in there. I ran a sheet of paper through about six times, just to see if some dust might be getting in the way, and I've blown out the feeder with air. Still nothing. At this point, I don't care too much about the ADF working, I just want to disable whatever sensor is tripping this error message. Any ideas? I found this thread online, where a user has the same problem. But no resolution was reached there.

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• Ubuntu 11.04 fresh install - "Input signal out of range" or "Mode not supported..."

  - by Dennis

  I recently installed Ubuntu 11.04 using a CD .iso. Installation went fine. Upon completion I rebooted and after a second or two I got a black screen with the message "Input signal out of range". And there it sits... Read a few things about how this could be related to screen resolution, refresh rate, etc. For the heck of it I tried a different monitor. The result is the same but the message provides some clues - "Mode not supported - H:92.7kHz, V:58.3Hz" (the latter is Hz; not kHz). So my thought is that I should probably be able to use the 11.04 install disc to "Try out Ubuntu", find and edit some file that was created by the install with the correct values. Problem is, I am not too sure what I am supposed to edit. Looked at the xorg.conf file but this is so minimal at this point I am not sure it is where I want to go. By the way, the monitor is an I-Inc ix191a. Anyone have any ideas on how to get around this?

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• Problems reviving old pc including graphics card issue.

  - by Mick

  I have a PC that seemed to have died years ago that I am trying to revive. It has a dual core athlon processor and a gigabyte motherboard. It had two dual output graphics cards, and I have long since forgotten which output would print out the diagnostic information as the PC starts up. Also I suspect that the resolution set on all the monitors was probably higher than my current single monitor is capable of displaying. The motherboard also has a built in graphics card, so I thought it may be simplest to remove both the graphics cards and plug my monitor into the onboard graphics just while I get things going. Does that seem sensible? Now the other problem: The PC has two hard drives. I have no idea which one is the primary one it is attempting to boot from. When I power up, the fan comes on and I hear some chuga-chuga-pause chuga-chuga-pause repeat indefinitely. I'm not sure which device is making the noise. There are no-beeps at any time. I see nothing on the screen at any time, not even for a second. Any suggestions? EDIT: If T start up the PC without the power connected to the CDrom there is no chuga-chugan noise.

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• Rails application keeps timing out when attempting to connect to Postgresql DB

  - by Corillian

  I'm hosting a postgresql database on a small windows azure Ubuntu 13.04 VM with a default postgresql.conf. I have a Rails application running on a medium windows azure Ubuntu 13.04 VM. When accessing the postgresql database the rails application is constantly timing out. In its database.yml I have the connection pool size set to 120 and the timeout set to 15 seconds. Despite this my rails logs are full of the following error message: ActiveRecord::ConnectionTimeoutError: could not obtain a database connection within 5 seconds (waited 5.0023203 seconds). The max pool size is currently 120; consider increasing it. My postgresql.conf has a max connection limit of 120, making it any larger prevents the server from being able to successfully restart. I've also made sure that ssl was off in the postgresql.conf per this article but beyond that I have no idea what's going on. My postgresql logs don't contain any info indicating something is going wrong. My website is getting ~1k hits per day so perhaps a small VM instance just isn't powerful enough? I appreciate any assistance! [Edit1] The postgresql database is in a separate cloud service within the same affinity group. For example: db small VM: mydatabase.cloudapp.net (Affinity Group US East) forums medium VM: myforums.cloudapp.net (Affinity Group US East) On the database server I have opened port 5432. The connection to the database server from the forums server is using its hostname. Is it possible that the DNS resolution is what's taking so long?

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• Route53 only for wildcard subdomain

  - by Philippe Gerber

  We recently moved our web application to AWS. One thing that is still managed by our old hoster is DNS. OLD HOSTER example.com. NS <Old hoster's name server> example.com. A <ElasticIP on EC2 instance> *.example.com. CNAME example.com. ... I'm now trying to setup and play around with Route53 and use it for name resolution of our EC2 instances. ROUTE53 web-01.aws.example.com. CNAME ec2-xx-xx-xx-xx.eu-west-1.compute.amazonaws.com. web-02.aws.example.com. CNAME ec2-xx-xx-xx-xx.eu-west-1.compute.amazonaws.com. ... Now my question: Is it possible to forward DNS queries for *.aws.example.com to Route53 (ns-xxxx.awsdns-59.co.uk.)? What kind of record would I have to add?

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• Apache Virtualhost entry with Windows hostname

  - by gshauger

  I have a Windows Domain Controller and we use it for DNS for our internal network. I have an Ubuntu box with an IP address of 172.16.34.149. Within the Windows DNS I created the forward and reverse lookup entries for the name Endymion. Naturally when ever I FTP/SSH/HTTP/etc to the hostname Endymion it resolves correctly to my Ubuntu box. I wanted to do some web development on this box for an existing site. There were problems when I placed the website in a subfolder of /var/www/. Let's just say it was in folder /var/www/projectx/. The issue involved the incorrect resolution of non-relative urls. So I figure I could create a new DNS entry for the hostname projectx. Sure enough when I FTP/SSH/HTTP/etc to the hostname projectx it takes me to the same ubuntu box as the hostname Endymion...this is what I would expect. I now have two hostnames for the same box. I then create a Virtualhost entry in httpd.conf that looks like the following: <VirtualHost *:80> DocumentRoot /var/www/projectx ServerName projectx ServerAlias projectx </VirtualHost> Sure enough when I go to a browser and type in http://projectx/ it takes me to the correct subfolder. Everything works!!! Not so fast. I then go to http://endymion/ and instead of taking me to /var/www/ it takes me to /var/www/projectx/ Clearly I'm missing something. Help please! ;)

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