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• Can not use keyboard on unity

  - by ikhsan

  Dear Ubuntu Community, currently I am using Ubuntu 14.04, and few hours ago, an update notifier prompted to install an update. After update finished, it ask for system restart, I think there is some kernel update etc. The problem start after restart, I can type password when login, but after entering unity desktop, my keyboard become suddenly unusable, system doesn't respond to any key press, after few minutes, it lock the screen automatically, but still I can't type password to unlock the screen. I tried to logout (mouse is working properly), and login again, try starting onscreen keyboard, but still have no luck, system still doesn't respond to the key press. I tried to login in console, and keyboard working well, tried to install xfce, and keyboard also working properly, keyboard also working properly when login to unity as guest, it only not working when I login using my account. I also try to reset unity config via unity-tweak-tool --reset-unity , but still no luck any suggestion to resolve this?

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• How can I install ATI Catalyst Video driver of Ubuntu 12.04.3?

  - by Eastsun

  EDIT My computer is Thinkpad E420 with Intel HD3000 and ATI 6630m. I have reinstalled my Ubuntu12.04.3 yesterday. I had successfully installed Ubuntu and ATI Catalyst Video driver many times about half year ago following these links: How do I get AMD/Intel Hybrid Graphics drivers to work? What is the correct way to install ATI Catalyst Video Drivers (fglrx)? However, this time I have no luck with installing ATI Catalyst Video driver. I have tried version 13.4, 13.1, 12.8 of ATI Catalyst Video driver. It seemed that 13.4 doesn't support 12.04 any more, following this link , the lowest Ubuntu version supported by ATI 13.4 is 12.10 and for the reset of the ATI drivers, the kernel version and xorg version of Ubuntu 12.04.3 is too high to be supported. So, should I stay on ubuntu 12.04.1 with ATI 12.8, or there is any way to install ATI driver on Ubuntu 12.04.3?

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• Semi-transparent parts of theme show as full white

  - by Kilian

  I am running ubuntu 10.04 64bit on a macbook pro, using the nvidia-drivers version 260.19.29. As of a recent kernel update, all the semi-transparent parts of my theme show as full white. This means: no gradients on scrollbars and buttons, 'inverted' dividers in context menu's, full white gnome-do panel etc. Does anyone know what causes this and how I can fix it? Screenshot examples below. Scrollbars: Gnome-do: 'inverted' dividers in the context menu: (Last two links are not links due to not having sufficient points)

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• MammothVPS launches Backups, DNS Management and more!!!

  - by stefan.sedich

  Yesterday we launched a bunch of new features over at MammothVPS, - All VPS' now have an on-site, off-server backup facility available to them. By default all customers will have 1 free weekly backup made available to them, and should you wish to you can purchase more slots which are available in daily, weekly and monthly schedules. - DNS hosting has been made available and will be free for all customers. You can find the new interface in your mPanel. - A cleanup of the menu system has been done to make it easier to navigate around both the site and mPanel. - You will find new sections on site, we now have more information about our services and have included things like a Knowledge Base, which will provide information on howto setup various applications on your VPS. - Added the ability to change the kernel your VPS is running on. So head on over to MammothVPS and check it out.

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• Are there jobs which are oriented towards optimisation programming or assembly

  - by jokoon

  3D engine programmers have to care a little about execution speed, but what about the programmers at ATI and nVidia ? How much do they need to optimize their driver applications ? Are there jobs out there who only purpose is execution speed and optimisation, or jobs for people to program only in assembly ? Please, no flame war about "premature optimisation is the root of all evil", I just want to know if such jobs exists, maybe in security ? In kernel programming ? Where ? Not at all ?

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• How to setup whole-disk encryption with dual boot on a MacBook Pro (generation 9,2 with 12.04)

  - by blueyed

  I can install Ubuntu 12.04 on the MacBook when using the "noapic" kernel boot option, using the alternate amd64+mac image (from http://cdimage.ubuntu.com/releases/12.04/release/ ). But after installation the screen turn sblack after trying to boot "Windows" (as named in the boot menu that shows up when holding Option/Alt during startup). I want to use whole-disk encryption and given that only one free partition is available, I have setup LVM to do so: - vg0 contains bootlv and cryptlv - in cryptlv I have setup encryption with another LVM volume group (vg1, which holds swaplv, rootlv and homelv) I have not installed Grub during installation (because I was not sure about the partition) and when trying to install it later on /dev/sda4 (which contains the outer LVM) it complained that it could not determine the file system, and --force did not help either. The black screen / behavior looks similar to starting the installer without enabling the noapic option.

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• NDIS Driver Filter VS API Hooking

  - by Smarty Twiti

  I've seen many developers asking for "How to intercept in/out HTTP packets ", "How to modify them on the fly". The most "clean" answer I've seen is to make a kernel-mode-driver filter from the scratch (TDI for XP and earlier winx9 or NDIS for NT systems). An other way, is to use a user-mode-driver like Windivert, also Komodia has a great solution (without writing any single code). The idea behind this introduction is just I want to know is API Hooking can be considered as alternative of writing of whole of driver-filter? writing a driver from the scratch is not an easy task, why just not Hooking the HttpSendRequest or any other API used by the browser? There are many free/commercial libraries to do this in a safe manner (eg: EasyHook, Mhook, Nektra..). I'm not the first who ask, there already Sockscap that uses Hook(DLL injection) to change behavior to other applications and force them to use a Socks proxy, also Form grabbing attack 'used by keylogger..

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• LinuxCon North America 2014

  - by Chris Kawalek

  As the first day of LinuxCon North America 2014 draws to a close, we want to thank all the folks that stopped by our booth today! If you're at the show, please stop by our booth #204 and have a chat with our experts. And you won't want to miss these Linux and virtualization related sessions coming up tomorrow and Friday: Thursday Aug 21 - Static Analysis in the Linux Kernel Using Smatch - Dan Carpenter, Oracle Friday Aug 22 - The Proper Care of Feeding of MySQL Database for Linux Admins Who Also Have DBA duties - Morgan Tocker, Oracle Friday Aug 22 - Why Use Xen for Large Scale Enterprise Deployments, Konrad Rzeszutek Wilk , Oracle We look forward to meeting with you and we hope you enjoy the rest of LinuxCon North America 2014! 

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• Wireless Not Working with Drivers Installed

  - by Haoran

  I'm new to Linux. I installed Ubuntu 12.10 on my old Compaq/Hp Preario V3000 to replace Windows XP. Every thing works fine except I'm getting no wireless network options in the network drop down menu. I'm using a cable at the moment. Wirless chipset is: 05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01) 08:08.0 Ethernet controller: Intel Corporation PRO/100 VE Network Connection (rev 02) I ran rfkill: 0: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: no I also ran iwconfig and got this lo no wireless extensions. eth0 no wireless extensions. In the additional drivers it says: "Using Broadcom 802.11 Linux STA wireless driver source from bcmwl-kernel-source (proprietary)" Any help to resolve the problem would be greatly appreciated.

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• Xubuntu all Icons disappeared

  - by user1392185

  I'm running Xubuntu 12.04.1 with kernel Xen4.1-amd64 and the following problem is mine: Nearly all icons have been replaced by the default "no icon available"-icon, even on the login screen and the all icons in software like e.g. Firefox and the icons I manually assigned to launchers, too. Changing the icon theme does not seem to affect this. The only icons that did not disappear are: LibreOffice, gThumb, Simplescan, Ristretto and in the XFCE menu office, tools and graphics. How could I bring the icons back? EDIT: When I tried to use Ristretto the following error showed up: Could not load image-loader module /usr/lib/x68_64-linux-gnu/gdk-pixbuf-2.0/2.12.0/loaders/libpixbufloader-png.so Unable to open shared-object-file I/O error (Had to translate this to English.)

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• failure to upgrade to 13.10 on ASUS 1015E-DS03

  - by user211270

  How should I proceed? On my last step to reach 13.10, after the download and installation and removal of unwanted packages, and after the reboot, I received this message: Sorry, a problem occurred while installing software. Package: i915-dkms The details revealed: Package i915-dkms 0.1 [origin: unknown] Problem Type Package Title i915-dkms 0.1: i915 kernel modele failed to build ApportVersion 2.12.5-0ubuntu2.1 Architecture amd64 DKMSBuildLog DKMSKernelVersion 3.11.0-12-generic Date Sun Nov 3 19:49:38 2013 Dependencies DistributionChannelDescriptor This is a distribution channel descriptor For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-annan-standard-precise-amd64-20130106-0 DistroRelease Ubuntu 13.10 InstallationDate Installed on 2013-01-24 (283 days ago) Thanks for any help, Bob Pendleton

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• How to fix Ubuntu 12.04.3 boot to black screen full of errors in white text, after upgrading on dell inspiron 1501

  - by Ibuntu

  I am running a Dell Inspiron 1501 I use Linux only. No Microsoft or Apple operating systems (or really anything closed-source). I've only been using Linux for a little over a year but I'm starting to gain a comfortable level of familiarity with the system and terminology. I've been having some issues with Quantel Quetzal and Raring Ringtail, especially with older hardware, so I opted to install Ubuntu 12.04.3 Precise Pangolin on the Inspiron 1501. I checked my MD5 sum after downloading my ISO and all was good. I have in fact used this iso/dvd to install Precise Pangolin successfully on a few other systems (some of which are even older than this laptop). Install goes fine. The wireless card doesn't work out of the box but this is a known issue which is fairly easy to fix. So, first thing I did was open up a terminal and run sudo apt-get update && sudo apt-get upgrade which, part way through, crashed (I assume lightdm and possibly X) and took me to a black screen filled with white lines of text that were either errors or just the ouputs of commands. The reason I say that is because I was unable to gleam any useful information from the output on the screen. I did take a picture however and will post a link. After that, every time I boot the system it goes right to that black screen posting all the error messages or output in white text. I never get a purple Ubuntu splash, so from what I can tell after reading this wiki article: https://wiki.ubuntu.com/X/Troubleshooting/BlankScreen That means that after the kernel is selected, it is unable to correctly implement the settings it needs. If the purple splash never shows, the frame buffer was never set correctly right? This leads me to believe that it could be a kernel issue? The wiki suggested to try and pinpoint the issue by rolling back kernels until I find one that works. Is this my best option? I think I'm going to give it a try anyways and will let everyone know if I am able to solve the issue this way. I have since done a few reinstalls and some trouble-shooting including a couple hours scouring the net for anyone with any kind of similar issue. Most of the issues I could find involved getting a black screen after login and none of them said anything about any information output on this black screen. My reinstalls have taught me that there is no issue updating, but as soon as I run sudo apt-get upgrade my system goes to the black screen and every time I boot it up it does the same thing. The only way to fix is by reinstall. I never get any ability to log in. After a hard power off to the laptop (because I cannot use ctrl+alt+del to reboot) when it boots again it goes to the grub boot menu and I can select between regular boot, recovery mode and the two memtest options. I never tried the memtest options but the other two both lead to the same black screen. Some people having a black/blank screen issue claim to have fixed it by using 12.10 or 13.04 but I believe they were having a different issue where they got a black/blank screen after logging in. I think I will still give these images a try, but mostly figured I would just wait another day or two for 13.10. Other things I figured I would try from the following three articles: After logging in, there's a black screen and my cursor, nothing else! in Ubuntu 12.10 Black Screen on Login After Upgrading to 12.04 I can't get to the login screen include opening a terminal using ctrl+alt+f1 and trying a variety of reseting unity, x settings, lightdm (or switching to gdm); but I doubt this will work or that I will even be able to access a terminal. I'm pretty sure the whole system is stuck after it loads the last line on the black screen. I will try these things and post more information when I have. Hopefully someone has an idea in the meantime and I will keep checking back trying to find a solution. Thank you. Here are 3 different pictures of the error message. I had to take with my phone: http://ubuntuone.com/album/0TBBkxmVajJIQQtoN9mVdN

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• EC2 AMI won't boot after edit

  - by Eric Lars0n

  I did something stupid, I got a new laptop and copied everything over to the new one, then wiped the old one clean. Then I realized that I forgot to copy the private key out of .ssh that I use to connect to my AWS EBS backed instance. So I can't log in to my custom AMI. So I created a new Volume from the Snapshot of the AMI, then started up a public instance and attached the Volume to it, edit the sshd_config to allow for password log in. Unmounted the volume, detached it, made a snapshot of it, then made a new AMI from the snapshot. The new AMI launches, but never passes the Status Checks and is not reachable. What am I doing wrong? Or alternatively how can I fix my problem? Edit: Adding some of the console output Linux version 2.6.16-xenU ([email protected]) (gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)) #1 SMP Mon May 28 03:41:49 SAST 2007 BIOS-provided physical RAM map: Xen: 0000000000000000 - 000000006a400000 (usable) 980MB HIGHMEM available. 727MB LOWMEM available. NX (Execute Disable) protection: active IRQ lockup detection disabled RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize NET: Registered protocol family 2 Registering block device major 8 XENBUS: Timeout connecting to devices! Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,0)

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• Ubuntu install problem: "USB disconnect address 2"

  - by explorex

  Hi, I am installing ubuntu 10.10 and i am having problem in "Who are you?" section. How long will it take to install. i have been waiting for more than 20 minutes. and still i am not being able to click forward button. in ready when you are ... console i am getting message curr DATE ubuntu kernel: [ 684.152061 ] usb 5-1:USB disconnect address 2 whats happening i have no idea, but live stick is working fine. I am installing for USB drive and i have internet turned off edit:: now i am getting message curr Date ubuntu: CRON[9268]: (root) CMD (start -q anacron || :) for past 15 minutes

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• Grub not showing installed kernels

  - by Markus

  Although I have several kernel versions in /boot and having them in my grub.cfg, they are not displayed in the grub boot menu. Running update-grub seems to work, as it puts the kernels in the grub.cfg in /boot/grub. Issueing it gives the following output: Generating grub.cfg ... cat: /boot/grub/video.lst: Datei oder Verzeichnis nicht gefunden Found linux image: /boot/vmlinuz-3.2.0-31-generic Found initrd image: /boot/initrd.img-3.2.0-31-generic /usr/sbin/grub-probe: Fehler: no such disk. /usr/sbin/grub-probe: Fehler: no such disk. Found linux image: /boot/vmlinuz-3.2.0-30-generic Found initrd image: /boot/initrd.img-3.2.0-30-generic /usr/sbin/grub-probe: Fehler: no such disk. /usr/sbin/grub-probe: Fehler: no such disk. /usr/sbin/grub-probe: Fehler: no such disk. done I don't know how to fix that problem. Reinstalling grub via live cd did not help.

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• Broadcom bcm4311 rev2 Full disabled on battery

  - by Antonio BG

  Ok this is my problem... My problem begins while ago when I installed ubuntu 10.10. (is the same with 11.04,11.10...) My wireless card is disabled if the power cord is unplugged, and the only way to fix this is rebooting my pc WITH the power cord plugged and if I use lspci command, it doesn't show me the wireless card. is like if I've removed the wireless board from my laptop port. I've searched a lot of solutions for bcmw4311 issues, but none of them fix my problem because when apply one of the fixes, if I unplug the cord, my wireless card it just gone away... I have dual boot on my pc(w7,ubuntu), I've tried with full installation just to see if this is the problem, but not, is the same. On windows all work correctly with and without power cord.. so this is not a hardware problem, is more like a kernel problem. anyway I can use wireless with power cord plugged, but c'mon this is a laptop not a desktop pc XD haha any help is welcome

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• Mouse pointer hides at bad times after updating to 13.10

  - by Richard

  A bug, I think, though I can't even seem to find any information when searching for it. The mouse pointer hides itself, but it is still possible to use it. Whenever I start watching a video in VLC, or start playing KSP through Steam my mouse pointer disappears. It is not returned upon exiting the application. I have not tried with other games in Steam. The mouse pointer do not disappear when watching videos online through YouTube, though it properly hides itself after a few seconds. The bug came about after I updated to 13.10, it was not present with the same setup in 13.04. I have tried removing ~/.compiz and restarting the kernel module psmouse. Going to tty1 and back to the desktop reveals the pointer, though this fix is bothering me. How do I fix this problem?

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• Failed to install the proprietary display driver, Compiz crashed!

  - by Naveen

  ATI Mobility Radeon HD 5400 I was using the default open source driver with Gnome classic, but when I upgraded to the closed sourced one using jockey-gtk/additional drivers everything messed up! It failed to activate the driver. Here is the error log. Wobbly windows or any other compiz effect won't work now. I can't even move a window! I'm on Precise Pangolin, Kernel-3.2.0-31-generic-pae Please Help! :( Update: I think my driver is installed even jockey doesn't show it. Compiz effects are working in Unity desktop... but I want it on Gnome Classic.

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• How to add a command permanently to grub2

  - by tomodachi

  I have a fairly special setup, using Linux on a MacBook Laptop. to switch off my secondary graphics card in it I'm required to add these lines to my grub outb 0x728 1 outb 0x710 2 outb 0x740 2 outb 0x750 0 I do this by pressing 'e' for my selected grub menu option and adding the lines one by one . then finally booting . But as we know it's not permanent. I cant really figure out where i need to add it for grub to always append it to my Linux boot options. It's doesn't seem to belong in /etc/default/grub since here i can add stuff to the kernel boot line Honestly i'm afraid to fiddle to much with grub on my computer since getting it to triple boot Linux/Mac/Windows was a very delicate and timely matter. Does anyone have any idea of where to add it?

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• Brightness fn key adjustment problems

  - by npCoder

  My brightness function key controls work after setting grub boot parameter to "acpi_osi=" but using them I cannot adjust the brightness higher than around 70% (there is empty bar left over and I can't adjust higher) unless I go to Brightness & Lock settings manually than I can use the slider to adjust it higher... I primarily use intel_backlight to adjust my backlight and I am running Linux kernel 3.14.1 on Ubuntu 14.04 LTS on an ASUS X550LA Laptop when I try: cd /sys/class/backlight/intel_backlight cat max_brightness 937 cat brightness 811 It seems that I can only adjust to a maximum of 811 using the fn brightness controls If I instead do cd /sys/class/backlight/acpi_video0 cat max_brightness 10 cat brightness 4 cat actual_brightness 10 With the FN keys actual_brightness is not equal to the value returned from brightness on acip_video0 (which is always 4) but on intel_backlight actual_brightness = brightness The adjustment problem seemingly arises because both intel_backlight and acpi_video0 are trying to adjust brightness

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• Slow Wireless Reconnect After Suspend

  - by nrhine1

  I a Broadcom 4312 using the STA drivers, I reinstalled ubuntu because the b43 drivers were giving me a huge hassle along with some weird kernel issues. My wireless speed is fine, everything works well, except upon restart of computer and after taking the computer out of suspend. It takes about 30-45 seconds for the wireless to reconnect, and I think it is a driver issue (I clicked on the network manager at the top and for about 30 seconds there are no wireless networks listed.) I tried this advice already: http://lilserenity.wordpress.com/2007/10/31/fix-ubuntu-dropping-wireless-on-suspendhibernate-resume/ which basically says to change this: STOP_SERVICES="" to STOP_SERVICES="networking" in the file /etc/default/acpi-support This did not help anything. Something to note is that the issue does not occur when I am logging back in after already logging in once and logging out.

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• ubuntu 14.04 - only performance and powersave governor available (i5 4.gen)

  - by kinske

  After updating my ubuntu 13.10 to 14.04 there only these to govenors available for my cpu, instead of additionally ondemand and conservative. cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors performance powersave My cpu is a Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz, my laptop a LENOVO B5400 80B6QB0 and my kernel version is 3.14.1-031401-generic x86_64 Before updating the four governors were available. If this is important, I have installed tlp and indicator-cpufreq. How do I get back the missing two govenors? ondemand is really important to me because of power saving.

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• Spotlight has stopped indexing/returning anything in /Applications

  - by pra

  After a recent kernel panic & restart, Spotlight no longer seems to know anything about the files under my /Applications folder. I used to launch Safari.app, Opera.app, Textedit.app, etc via Spotlight as a matter of routine. Now, I get "No results found" for all of them (except Textedit.app, which launches a demo text editor from a Qt installation). The programs are still there & still launch directly from Finder. I've already run disk utility & verified the disk, no issues. I repaired disk permissions, which made several changes, but to no effect. Is there anything else I can do, short of re-installing MacOS? Update: I already verified that "Applications" was still checked in my Spotlight preferences. It was still returning applications located elsewhere (the Qt textedit sample app), so that shouldn't have been the issue. A few hours later it resolved itself; I guess there's a background process running on some interval.

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• Can't see YouTube videos in either Firefox or Chromium

  - by williepabon

  Dont' know why or if it is related, after upgrading Ubuntu 10.04 kernel ( I guess from 2.6.32-38 to -42) I can's see youtube videos. I checked the flash plug-ins installed and I have: (1) flashplugin-installer, (2) flashplugin-nonfree and (3) flashplugin-nonfree-extrasound. I haven't reinstalled the browsers yet. Here's the code of the plugins installed: williepabon@raquel-desktop:~$ sudo lsb_release -a; uname -a; dpkg -l | egrep 'flash|gnash|swf|spark' [sudo] password for williepabon: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 10.04.4 LTS Release: 10.04 Codename: lucid Linux raquel-desktop 2.6.32-42-generic #95-Ubuntu SMP Wed Jul 25 15:57:54 UTC 2012 i686 GNU/Linux ii flashplugin-installer 11.2.202.238ubuntu0.10.04.1 Adobe Flash Player plugin installer ii flashplugin-nonfree 11.2.202.238ubuntu0.10.04.1 Adobe Flash Player plugin installer (transit ii flashplugin-nonfree-extrasound 0.0.svn2431-3 Adobe Flash Player platform support library Any ideas to solve this issue? Thanks.

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• Unable to boot 12.04 server: no LVM activated and impossible to mount /

  - by baronKarza

  I'm stuck in the Busy Box shell after upgrading from Ubuntu server 11.10 to Ubuntu server 12.04 64 bit. During the booting phase the system hangs while mounting root filesystem. My system is so configured: /dev/sda1 -- /boot /dev/mapper/vg-lv_root /dev/mapper/vg-lv_var /dev/mapper/vg-lv_tmp When the boot process fails and I'm forwarded to the busybox shell, if I type vgchange -ay I can mount my volumes and all it's OK. But it does not enable LVM automatically so that it is impossible to mount root, var, and tmp. I tried to start with a Knoppix, chroot, reinstall (aptitude) both kernel and lvm2 as suggested by this tread "Fixing unbootable installation on LVM root from Desktop LiveCD": nothing changed. I can't figure out what is the problem. Any suggestion is welcome. Thanks in advance.

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