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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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• 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 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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• 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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• If I enable/disable my wireless device, my computer will panic

  - by Yinyanghu

  Now, I use Debian 6.0.6 instead of Fedora 16/17. But I still sustain the problem of my wireless problem. If I enable/disable my laptop wireless device or my usb wifi adaptor, my laptop will panic. It seems like all the processes stop at that time and I have to restart my laptop directly. P.S. I think I installed the drivers correctly and the linux kernel may have some bugs. For example, when I unplug my usb wifi adaptor or I use this command, ifdown wlan0 I encounter this problem. Wireless Device: PCI: 03:00.0 Network controller: Broadcom Corporation BCM43225 802.11b/g/n (rev 01) USB: Bus 002 Device 005: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN

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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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• 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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• Choppy, stuttery & sped-up sound after update

  - by Synesso

  My audio has always worked perfectly on this hardware and 12.04. Yesterday I received an update, including a kernel update. Today the sound is periodically stuffed. In youtube, mkv files via VLC and embedded audio in web pages (memrise.com) the sound can become stuttery, sped up or stopped mid play-back. Where can I go to find if this is a known problem, or report it if it is not? Also, can I find a log that will tell me what packages were updated on my machine yesterday?

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• If I intend to use Hadoop is there a difference in 12.04 LTS 64 Desktop and Server?

  - by Charles Daringer

  Sorry for such a Newbie Question, but I'm looking at installing M3 edition of MapR the requirements are at this link: http://www.mapr.com/doc/display/MapR/Requirements+for+Installation And my question is this, is the Desktop Kernel 64 for 12.04 LTS adequate or the "same" as the Server version of the product? If I'm setting up a lab to attempt to install a home cluster environment should I start with the Server or Dual Boot that distribution? My assumption is that the two are the same. That I can add any additional software to the 64 as needed. Can anyone elaborate on this? Have I missed something obvious?

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• VMWare Player pauses often

  - by pascal

  I'm using a 64bit Windows 8 inside vmplayer, with 2 virtual processor cores, virtual hard disk resides on a fast local disc and is not preallocated; host CPU is Intel i7 3770, should be capable of hardware virtualisation but I don't know if VMWare uses it; NAT networking; Sound card connected, USB connected, accelerated 3D graphics (NVidia 313.30 on host) My problem is, that the VM often pauses for a few seconds, and then speeds up for a few seconds to reach real time again. Time in the VM actually moves faster after the pause, for example all animations using timers speed up. When running, the vmware-vmx process shows ~150% CPU usage in top, but 0% when pausing (and D state i.e. waiting for IO). iotop shows normal disk writes from vmware-vmx threads, but during pauses, the flush kernel thread uses 99%. Are there some options to try so that VMWare doesn't wait for IO? I've tried a few things available from the GUI but the issue never went away…

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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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• 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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• Installing drivers for an ATI 6950

  - by aj.esler

  Is there any way to get ubuntu to recognise an ATI 6950? I have tried installing the proprietary ATI drivers, but these do not seem to work properly. It seems to screw up the gnome desktop, and starts booting into terminal. I'm somewhat of a linux newbie, so not really sure whats going wrong. I don't want to game on ubuntu, I just want it to recognise my dual monitor setup rather than mirroring the monitors, so any driver that does this is fine by me. It seems like the open source ATI radeon drivers will not support the 6950/6970 for some time, at least until kernel 2.6.38 is released. The card is also flashed with the 6970 firmware, not sure if this is important. I am running a 64 bit version of ubuntu, I installed ubuntu server 10.10, then installed gnome-desktop.

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• How to fix slow wireless with Intel 4965 AGN? [closed]

  - by mikewhatever

  Possible Duplicate: Slow wireless with an Intel 4965 We run Ubuntu 12.04, 32bit, with the current kernel 3.2.27-generic on an MSI EX700. I've already added the 11n_disable=1 tweek, without whcih, wireless has been unusable. Now, it works OK, but speedtest shows: Windows XP - down 11.68mbps, up 2.07mbps Ubuntu 12.04 - down 2.06mbps up 2.0mbps We've disabled ipv6, tried static and dinamic IPs, tried both swcrypto=0 and swcrypto=1 options, none of whcih made any difference. The problem may be the symptom of high packet loss. For example, here's the output of iwconfig after booting and testing the speeds: wlan0 IEEE 802.11abg ESSID:"amu" Mode:Managed Frequency:2.462 GHz Access Point: 00:78:9E:FA:32:C8 Bit Rate=54 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=58/70 Signal level=-52 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:11 Invalid misc:3627 Missed beacon:0 I've posted a help request before with lots of technical info and outputs.

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• Elantech trackpad being identified as a logitech wheel mouse

  - by user11895

  I recently purchased a Samsung RF510 laptop computer, which I absolutely love. However, upon installing Ubuntu 10.10 onto it I couldn't get the trackpad to function properly. It worked as a basic mouse (point and click) but had no functionality for edge scrolling or any of the multitouch settings the trackpad is capable of. After doing a lot of research I discovered the reason is a known issue where the Ubuntu kernel will improperly detect an Elantech trackpad as a logitech PS/2 wheel mouse, and as such will gain none of the functionality that seems to be coded for synaptics trackpads. The question I have is: does anyone know a way to get this working properly? This is my first time trying to run Ubuntu on a laptop (actually, it's my first laptop in the last 12 years) and I'm finding the experience to be intolerable without the basic scrolling/zooming/etc I've been used to using for as long as I can remember.

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• Problem with Ubuntu 12.04 boot

  - by Etienne

  I'm having a problem as stated in the title regarding bootup. What happens basically is that after grub is loaded the system doesn't boot. I get a black screen with cursor blinking then the screen darkens ( switches off ) and keyboard is unresponsive. Today I have re-installed everything on a new hard drive and it happened again. This has been observed when running kernel 3.5.0-30 and 3.5.0-28. System is an HP6550b. Can someone help me on this please ? Many Thanks!

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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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• Installer hangs at blinking dots

  - by Aldrin

  I've got a problem. I've tried booting it from a 4gb FlashDrive many times and yet, it'll just show me blinking dots. I've tried the options (booting from first drive, trying ubuntu without installing, help, test memory). I cant! I've also tried Ubuntu 11.10 but the turns out the same. Additional specs: First HDD, 2 partitions, C: and E: by Windows. Second HDD, 2 partitions, F: and G: by Windows. First HDD: 40Gb, Second HDD: 32Gb. I've made the Second HDD blank and plan to install Ubuntu there. Any help will do. I've tried both of the ISO images of both Linux Distros, but it didn't work. Both of them results to these. HELP "Registered protocol family 1", then "_", Boot from first hard drive Cannot load a ramdisk with an old kernel image.

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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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• Ubuntu 12.04 LTS : la beta 2 de "Precise Pangolin" améliore HUD, Ubuntu One et intègre de nouvelles versions d'applications

  Ubuntu 12.04 LTS : la beta 2 de "Precise Pangolin" améliore HUD Ubuntu One et intègre de nouvelles versions d'applications Mise à jour du 09/04/2012 À quelques semaines de la publication de la version finale de Precise Pangolin, la prochaine version du système d'exploitation fondé sur Linux, Canonical publie la dernière beta de l'OS. La beta 2 d'Ubuntu 12.04 LTS apporte des corrections de bugs et quelques nouvelles fonctionnalités, dont l'ajout du noyau Linux 3.2.0-20.33 qui est basé sur la version stable 3.2.12 du Kernel. HUD, le nouveau menu intelligent pour les applications Unity dont un premier aperç...

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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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• Broadcom bcm4313 Ubuntu 13.10 connection time out

  - by Wahtever

  After upgrading to Ubuntu 13.10 I keep getting connection timed out every few seconds at which point i have to disconnect and reconnect to the WiFi network. The WiFi card worked fine on 13.04 with the bcmwl-kernel-source installed but giving problems on 13.10: *-network description: Wireless interface product: BCM4313 802.11bgn Wireless Network Adapter vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 logical name: eth1 version: 01 serial: c0:14:3d:cc:c9:c7 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=6.30.223.141 (r415941) ip=192.168.1.4 latency=0 multicast=yes wireless=IEEE 802.11abg resources: irq:17 memory:f0500000-f0503fff How can i fix this? Thanks

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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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• 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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• Slow writing HDD speed, Ubuntu 12.04 64-bit, Thinkpad T520i

  - by pyc

  It seems that (but I'm not completely sure), that when I'm copying files from gigabit network to HDD, I can't use full potential of the network which in my case is about 60 MB/s, because HDD writing is so slow like lower than 10 MB/s, and also it's slowing down the whole system which becomes pretty much unresponsive, almost impossible to work with. Copying files to samba share residing at Ubuntu machine, connected to share from Windows 7, I'm completely sure my network equipment is OK, and there's no CPU intensive process on Ubuntu except smbd getting about 10-20% from time to time which I think is OK. Something here is burried deep I think, maybe even in kernel. Already tried to switch from AHCI to compatibility mode, and turning acpi on and off - nothing helped. So it's like HDD buffer is full and emptying slowly while machine is sluggish, load is about 3 to 4. Somebody experienced the similar problems? Some help on troubleshooting process and identifying the cause would be helpful too :) Thanks!

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