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  • Creating own Amazon Machine Image - Kernel panic

    - by amra
    I have created own AMI and registered it on Amazon EC2. But while AMI startup I receive following error: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1) The image is running locally without any problems. fstab contains: proc /proc proc defaults 0 0 /dev/sda1 / ext3 relatime,errors=remount-ro 0 1 thx for help

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  • How to set the laptop screen brightness programatically?

    - by zls
    I'm currently migrating to openbox without gnome session. In unity i can use the vendor keys to set the screen brightness, but in openbox I'm on my own. /sys/class/backlight/acpi_video0/brightness works fine, the problem is that I need sudo to set the brightness and that wouldn't work with keyboard mappings. xbacklight -get/set doesn't do or output anything. I don't really want to use xrandr --brightness. Are there any other options or a way to fix the problems with xbacklight or acpi_video0 ?

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  • SSL on app - nginx web server

    - by Adam
    I am running an nginx web server where I redirect all http requests to https (with a self signed cert). Here is how I REDIRECT all http requests to https in the nginx config file: server { listen 80 default_server; listen [::]:80 default_server ipv6only=on; server_name my.server.ip; return 301 https://$server_name$request_uri; Problem is - I cannot seem to do so for an app running on a port. Example: http://my.server.ip:1234 does not redirect to https://my.server.ip:1234 ir works fine on all other urls like http://my.server.ip/temp etc. How can I modify the nginx config file to force that app url through ssl?

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  • Will 3D games run in a VirtualBox4-hosted Windows system under Ubuntu with Intel GMA X4500HD card?

    - by Ivan
    I've just got a laptop with Intel GMA X4500HD card (which is said to be DirectX10-compliant, while my previous laptop had Intel 82852/855GM and no chance to play modern 3D games at all). It would be nice if I could play some games (like HalfLife 2, StarCraft 2, Fallout 3) from time to time (while I am ok using lo-fi settings and having low performance) but as I strongly prefer Ubuntu environment and don't need Windows usually I'd like to install Windows inside VirtualBox instead of using a dedicated partition and dual-boot. So the question is if VirtualBox can use 3D acceleration of Intel GMA X4500HD if run on Ubuntu.

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  • Why am I unable to mount my USB drive (unknown partition table)?

    - by Pat
    I'm a real newbie to linux. Anyway the problem is that my USB doesn't get recognized anymore which is really annoying because I need information from it. I've read like a zillion threads how to manually mount it but I really can't it to work. I hope it's just some easy, stupid problem where any of you could help me out quickly.. Here is the syslog: kernel: [ 6872.420125] usb 2-2: new high-speed USB device number 11 using ehci_hcd mtp-probe: checking bus 2, device 11: "/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-2" kernel: [ 6872.556295] scsi8 : usb-storage 2-2:1.0 mtp-probe: bus: 2, device: 11 was not an MTP device kernel: [ 6873.558081] scsi 8:0:0:0: Direct-Access SanDisk Cruzer 8.01 PQ: 0 ANSI: 0 CCS kernel: [ 6873.559964] sd 8:0:0:0: Attached scsi generic sg3 type 0 kernel: [ 6873.562833] sd 8:0:0:0: [sdc] 15682559 512-byte logical blocks: (8.02 GB/7.47 GiB) kernel: [ 6873.564867] sd 8:0:0:0: [sdc] Write Protect is off kernel: [ 6873.564878] sd 8:0:0:0: [sdc] Mode Sense: 45 00 00 08 kernel: [ 6873.565485] sd 8:0:0:0: [sdc] No Caching mode page present kernel: [ 6873.565495] sd 8:0:0:0: [sdc] Assuming drive cache: write through kernel: [ 6873.568377] sd 8:0:0:0: [sdc] No Caching mode page present kernel: [ 6873.568387] sd 8:0:0:0: [sdc] Assuming drive cache: write through kernel: [ 6873.574330] sdc: unknown partition table kernel: [ 6873.576853] sd 8:0:0:0: [sdc] No Caching mode page present kernel: [ 6873.576863] sd 8:0:0:0: [sdc] Assuming drive cache: write through kernel: [ 6873.576871] sd 8:0:0:0: [sdc] Attached SCSI removable disk Thanks in advance

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  • Disabling mouse acceleration in X.Org (Linux)

    - by aib
    This is the Linux version of my Disabling mouse acceleration in Mac OS X question. Hopefully I'll get an answer this time. I am tired of mouse acceleration and want to have a completely linear mouse response. This is easily achievable through any of the 5 or so methods (some subtly implied) on the X.Org wiki page on pointer acceleration. However, they also disable velocity scaling. I don't want a 1:1 mapping between device and screen coordinates. I want a 1:N mapping where N is a constant. Any ideas?

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  • Performance & Security Factors of Symbolic Links

    - by Stoosh
    I am thinking about rolling out a very stripped down version of release management for some PHP apps I have running. Essentially the plan is to store each release in /home/release/1.x etc (exported from a tag in SVN) and then do a symlink to /live_folder and change the document root in the apache config. I don't have a problem with setting all this up (I've actually got it working at the moment), however I'm a developer with just basic knowledge of the server admin side of things. Is there anything I need to be aware of from a security or performance perspective when using this method of release management? Thanks

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  • Howto dianostic problem in MySQL Cluster?

    - by maj
    Hi, I have set up a MySQL cluster following exactly this howto. Page 1 is completed, but the problem I can see the nodes in ndb_mgm for a little while, and then I get ndb_mgm> show; Cluster Configuration --------------------- [ndbd(NDB)] 2 node(s) id=2 (not connected, accepting connect from 192.168.0.101) id=3 (not connected, accepting connect from 192.168.0.102) [ndb_mgmd(MGM)] 1 node(s) id=1 @192.168.0.103 (Version: 5.1.45) [mysqld(API)] 2 node(s) id=4 (not connected, accepting connect from any host) id=5 (not connected, accepting connect from any host) ndb_mgm> So the questions is; How do I diagnostic this problem? Does there exist log files I can look in?

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  • How can I apply proxy settings system-wide on Linux?

    - by Sravan
    Our campus employs proxy server with authentication. So, I have to apply http://username:password@proxyIp:port/ bash configure file(suppose for wget or curl) or manually entering details for every graphical application (like gtalk).And also if I work with localhost (XAMPP), I have to configure XAMPP, and so on. If I have my proxy password changed I have to change it everywhere on the system! Is there a way I can apply proxy settings system-wide at one place.Even though I am asking for Linux, I would like to know it on windows also.

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  • Ubuntu frozen on boot screen; boot repair fails due to X11 and gtk

    - by anandsun
    I have a year-old HP Pavilion dv6 with Intel i7 processors and graphics card. I had Windows 7 but last week I dual booted Ubuntu. It was working fine until today. I did the following things: Updated Gnome and installed Gnome tweak tool Uninstalled Chromium browser Uninstalled Google Chrome Moved jdk and jre folders from ~/ to /bin using sudo Moved Adobe folder from ~/ to /bin using sudo Then I restarted. Ubuntu froze for half an hour on the purple boot screen. Something I did must have broken it. So, I hit Ctrl + Alt + F1 and managed to log in through the command line. From there, I ran sudo apt-get update and sudo apt-get upgrade. I also updated grub. I also installed boot-repair. However, I cannot run boot-repair, because I keep getting the following errors: Autolaunch error: X11 initialization failed RuntimeError: Gtk couldn't be initialized.

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  • How can I restore GRUB without a live CD?

    - by Looterguf
    I realize that this is a duplicate of a question asked before, but in that question the asker managed to find his live CD and no real answer appeared, thus I am re-asking it. I managed to screw up my GRUB by deleting two linux partitions on my hard drive from windows. After this, GRUB gives the error "partition not found", and gives me the grub-rescue prompt. The only command I have found to work in this is 'ls', which spits out my partitions. I would use the live CD fix, but I am in India, and all my live CDs are back home in the US... What I've got is an internet connection, a 4GB flash drive with Flow OS installed (which I am currently using but can wipe if need be), and a working laptop that I can borrow. What should I do?

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  • PLS HELP!!How to boot windows 7 after installing ubuntu 12.10?

    - by user113553
    Im new to linux and im interested in learning it so I installed ubuntu 12.10 yesterday. Installation went smoothly and i chose "install alongside windows option" and I set about 50 gb using that slider and i tot i used 50 gb from c: drive but to my shock it used 50 gb space from f: drive. This was my first shock.Then when i restarted n tried to log into windows, nothing happened a black screen appeared saying "To restart press alt+ctrl+delete" but even pressing that it wont restart. No matter how many times i try rebooting windows is not booting same black screen saying restart appears. But i can log in to ubuntu and i can see that windows c: drive is fine. PLEASE HELP ME!!!!

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  • How do I move (copy) my entire Ubuntu system to a different hard disk?

    - by boywithaxe
    The HDD I have my Ubuntu installed is about to fail. I would rather not lose 3 years worth of data, customisation and apps. I am looking for a way to move the complete system (SWAP included, because I'm not sure if I can relink the system to a new SWAP partition) to another HDD. But not the complete HDD< only the partition containing Ubuntu, to a partition on a different HDD. Basically I'd like to do what I've been able to do with Norton Ghost for my Windows install. I thought about using Clonezilla but I think I would have issues with GRUB (Especially trying to boot from a different UUID than what is in the conf file). do you know of any way this could be done? PS, my home directory is encrypted but that's not really an issue, because I can work around that. EDIT: changed the explanation to make it clearer

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  • When should .local be used?

    - by hydroparadise
    So, I've set up a few Win Servs in my time and always did the .local thing when there was a router that sepearated my internal from external networks. Now that I'm setting up an *nix box for the first time, does this concept still apply? Do I still want my FQDNs (/etc/hostname) to show .local or .com for all my machines (mixed: linux servers, win workstations) inside of my network. This question comes in context of always having Active Directory hold my hand every step of the way, where now I'm setting up an DNS machine manually.

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  • Cannot access the EC2 server - permissions problems, ssh is dead

    - by user1494072
    One of our developers worked on a beta server and accidentally changed the permissions of the whole system (chmod /) to root. Due to that, services are unable to access files, and we can't ssh to the machine (permission denied on the key) (UPDATE: ssh is dead after reboot, probably can't start). Does Amazon has an option to browse files / physically access the machine? Any other creative solution?

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  • VM connected to network but not to internet in VMware Player 6 on Windows 8.1 host

    - by user1257262
    So I am running Bitnami's MEAN stack in VMware Player 6.0.2 on Windows 8.1 and the VM connects just fine to the network: https://www.dropbox.com/s/xfdzohjuuepz52w/ifconfig.PNG However, I am having a great deal of trouble getting the VM to communicate with the internet. No matter what sort of action I take (even something as simple as apt-get update), the machine just sits there and eventually fails to connect. Here is my VM's Network Adapter configuration: https://www.dropbox.com/s/xfdzohjuuepz52w/ifconfig.PNG On my host Windows 8.1 computer, I actually have the VMware Bridge Protocol enabled but for VMware Network Adapters (VMnet1 and VMnet 8), but they are listed as having No Internet access in my Network and Sharing Center. I am not entirely sure if these adapters are relevant to connecting the VM to the internet, to be honest. This is the first time I have ever had an issue connecting a virtual machine to the internet. This problem is also happening with other VM's I am trying to run. Can someone tell me what I am doing wrong and how I can fix it?

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  • How do I do a B43 Legacy install on Ubuntu 11.10?

    - by Gozzy
    I recently installed ubuntu onto an extra hard drive and everything booted correctly. However, my Linksys wireless card is not working. I went though all the forums and walk throughs and I know that I need to install the b43 legacy firmware to get the card to work. When I try to install the files, I keep getting the message in Terminal saying "No such file or directory" for every file i need to run. It's Ubuntu 11.10 on a dell optiplex gx280. Also, the "pool" file that is supposed to be on the file system is not there

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  • 10 Million records = wiped MySQL DB?

    - by Josh K
    So I was trying to load some test data and it appears to have killed my entire database. This is one case where it's great to have backups! They were all plain insert queries, probably about a 900 MB file. What could have gone wrong?

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