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[SOLVED] Low Resolution after NVIDIA Driver update 304.135

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After updating the NVIDIA driver from 304.134 to 304.135 my resolution got low 1024x768 instead of 1366x768. I tried to add a resolution with xrandr but received this error failed to get size of gamma for output default

I also tried to purge the new nvidia driver and reinstall but I had the same problem. Fortunately, I had Timeshift installed and could restore my OS to a previous state. I wonder if I should avoid further Nvidia updates. Or do you have any ideas how to solve that update problem?

Code:

            .-/+oossssoo+/-.              liam@RAT
        `:+ssssssssssssssssss+:`          --------
      -+ssssssssssssssssssyyssss+-        OS: Ubuntu 16.04.2 LTS x86_64
    .ossssssssssssssssssdMMMNysssso.      Model: ET1331 P01-A2
  /ssssssssssshdmmNNmmyNMMMMhssssss/      Kernel: 4.4.0-64-generic
  +ssssssssshmydMMMMMMMNddddyssssssss+    Uptime: 5 hours, 23 minutes
 /sssssssshNMMMyhhyyyyhmNMMMNhssssssss/    Packages: 2957
.ssssssssdMMMNhsssssssssshNMMMdssssssss.  Shell: bash 4.3.46
+sssshhhyNMMNyssssssssssssyNMMMysssssss+  Resolution: 1368x768
ossyNMMMNyMMhsssssssssssssshmmmhssssssso  DE: MATE
ossyNMMMNyMMhsssssssssssssshmmmhssssssso  WM: Metacity (Marco)
+sssshhhyNMMNyssssssssssssyNMMMysssssss+  WM Theme: BlackMATE
.ssssssssdMMMNhsssssssssshNMMMdssssssss.  Theme: BlackMATE [GTK2/3]
 /sssssssshNMMMyhhyyyyhdNMMMNhssssssss/    Icons: Vivacious-Dark-Aqua [GTK2/3]
  +sssssssssdmydMMMMMMMMddddyssssssss+    Terminal: mate-terminal
  /ssssssssssshdmNNNNmyNMMMMhssssss/      CPU: AMD Athlon II X2 220 (2) @ 2.8G
    .ossssssssssssssssssdMMMNysssso.      GPU: NVIDIA GeForce 6150SE nForce 43
      -+sssssssssssssssssyyyssss+-        Memory: 2899MiB / 3699MiB
        `:+ssssssssssssssssss+:`
            .-/+oossssoo+/-.


Trouble installing Ubuntu on Samsung Chromebook w/ ARM processor

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Hi, I´m trying to get the latest long term release of either MATE or Unity installed on my Samsung Chromebook.

I´ve tried the crouton method with many distros (unity, xfce, gnome) & releases (precise, trusty, xenial, etc), but the most stable & usable of them (unity-precise in my case) still leaves me with a lot of applications that don´t work properly.

Then I created a bootable USB with MATE using a Windows computer. I entered the shell command to enable USB booting (crossystem dev_boot_usb=1), but when I rebooted and held ctrl-u, it didn´t recognize it.

I then came across a detailed set of instructions designed for my specific chromebook model to install arch-linux on a USB or SD card. I don´t understand much of this, though it entailed commands partitioning the drive. I followed this procedure and was successful installing arch-linux onto an SD card and consequently loading it up by pressing ctrl-u.

I´m hoping that I could use this method to install MATE or Unity onto the SD card. But I´ll need some help in knowing what to replace the download commands with to install MATE/Unity rather than arch-linux.

Following are the commands that I followed from
https://archlinuxarm.org/platforms/armv7/samsung/samsung-chromebook-2 (I didn´t proceed with the Mainline Kernal option)

Any help would be greatly appreciated, thanks.



Samsung Chromebook 2



  • These instructions will create a dual-booting environment where you can switch between booting Arch Linux ARM and the stock ChromeOS. No changes are made to the internal eMMC drive, and your new Arch Linux ARM install will run completely from external storage. This is the recommended setup for those that just want to take a test drive, or don't want to give up ChromeOS.
  • You must be running the latest ChromeOS prior to installation.

Switch to developer mode

  1. Turn off the laptop.
  2. To invoke Recovery mode, you hold down the ESC and Refresh keys and poke the Power button.
  3. At the Recovery screen press Ctrl-D (there's no prompt - you have to know to do it).
  4. Confirm switching to developer mode by pressing enter, and the laptop will reboot and reset the system. This takes about 15-20 minutes.

Note: After enabling developer mode, you will need to press Ctrl-D each time you boot, or wait 30 seconds to continue booting.
Enable booting from external storage

  1. After booting into developer mode, hold Ctrl and Alt and poke the T key. This will open up the crosh shell.
  2. Type shell to get into a bash shell.
  3. Type sudo su to become root.
  4. Then type this to enable USB booting:crossystem dev_boot_usb=1 dev_boot_signed_only=0
  5. Reboot the system to allow the change to take effect.

Create a root USB or SD for dual booting

These instructions are written for installing to a USB drive with the sda device, assuming no other USB drives are plugged in. For an SD card, click here to magically adjust the instructions for the mmcblk1 device that an SD card will register as.
  1. Get a root shell as described in the previous section.
  2. Since ChromeOS will automatically mount any partitions it finds, unmount everything now:umount /dev/sda*
  3. Start fdisk to create a GPT partition table:fdisk /dev/sda
  4. At the fdisk prompt:
    1. Type g. This will create a new empty GPT partition table.
    2. Write the partition table and exit by typing w.

  5. Partition the micro SD card:cgpt create /dev/sda
    cgpt add -i 1 -t kernel -b 8192 -s 32768 -l Kernel -S 1 -T 5 -P 10 /dev/sda
  6. To create the rootfs partition, we first need to calculate how big to make the partition using information from cgpt show. Look for the number under the start column for Sec GPT table which is 15633375 in this example:localhost / # cgpt show /dev/sda
    start size part contents
    0 1 PMBR
    1 1 Pri GPT header
    8192 32768 1 Label: "Kernel"
    Type: ChromeOS kernel
    UUID: E3DA8325-83E1-2C43-BA9D-8B29EFFA5BC4
    Attr: priority=10 tries=5 successful=1

    15633375 32 Sec GPT table
    15633407 1 Sec GPT header
  7. Replace the xxxxx string in the following command with that number to create the root partition:cgpt add -i 2 -t data -b 40960 -s `expr xxxxx - 40960` -l Root /dev/sda
  8. Tell the system to refresh what it knows about the disk partitions:partx -a /dev/sda
  9. Format the root partition:mkfs.ext4 /dev/sda2
  10. Download and extract rootfs tarball:cd /tmp
    wget http://os.archlinuxarm.org/os/ArchLi...-latest.tar.gz
    mkdir root
    mount /dev/sda2 root
    tar -xf ArchLinuxARM-peach-latest.tar.gz -C root
  11. Flash the kernel to the kernel partition:dd if=root/boot/vmlinux.kpart of=/dev/sda1
  12. Unmount the root partition:umount root
    sync
  13. Reboot the computer.
  14. At the splash screen, instead of pressing Ctrl-D to go to ChromeOS, press Ctrl-U to boot to the external drive.
  15. After logging in as root (password is "root"), you can connect to a wireless network by running:wifi-menu


Mainline Kernel

The installation above will use the ChromeOS 3.8 kernel. The mainline kernel can be used instead, though some hardware may not be working yet. Two options are available to switch to the mainline kernel:

  1. Replace kernel packages after installation
    1. Install linux-armv7 packages, replacing the linux-peach package:pacman -S linux-armv7 linux-armv7-chromebook
    2. Type y and hit enter when prompted to flash the kernel to the kernel partition.
    3. Reboot.

  2. Perform a new installation with the above steps using the armv7-chromebook tarball:http://os.archlinuxarm.org/os/ArchLi...-latest.tar.gz


Ubuntu and Windows 10 on 2 HDDs, Boot option?

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Hello,

on my new Laptop I installed on my first HDD Ubuntu in UEFI mode. Then Windows 10 on my second HDD also in UEFI mode. I can now start my computer and slect via BIOS what to boot. But is there any chance to geht automatically a boot menu on startup where I can choose what to boot? I am not sure if this is an BIOS feature or deals with the EFI partition on both HDDs...

Thanks for your help!

[ubuntu] Problem with logging to Ubuntu 16.04.1 LTS

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After a regular update using Software Updater, Ubuntu froze and stopped responding to any input from keyboard. I tried to do a fresh restart, but now I cannot go beyond the blinking cursor and black screen that does not respond to any input from keyboard.

After login using Live CD, you can see the output from "boot-repair" in http://paste2.org/GcpgcVkJ and the output from "dmesg" in http://paste2.org/JBMjM82x

[ubuntu] ubuntu is not booting up

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i have tried everything but my system is not booting up after installing ubuntu 14.04 LTS .
i had also tried Boor-repair and it gave me following link:
http://paste.ubuntu.com/24070657/
please look into it and suggest me some solution
Laptop: dell inspiron 15 5558

[SOLVED] cannot install xnest Depends: xserver-common (>= 2:1.18.4-0ubuntu0.2)

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Code:

The following packages have unmet dependencies: xnest : Depends: xserver-common (>= 2:1.18.4-0ubuntu0.2) but 2:1.18.3-1ubuntu2 is to be installed
E: Unable to correct problems, you have held broken packages.

Replacing Windows with Ubuntu on a new netbook

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Hello,

I just bought an HP Stream 11 with 32gb/4GB/Celeron 3060. I was told there is not really enough room for a dual boot.
Is there a possibility to save windows 10 on a memory media before writing it over with Ubuntu 16.04. I would then have the possibility to revert the notebook to factory state in case of need.
Thank you.

apt-get upgrade broken

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so i am having some issues upgrading and updating. background. 14.04 crashed during upgrade to 16 "had a power outage". got Ubuntu up and running but updates seem broken. did a little research and need some help even though soome commands were for 14 i was hoping someone else ran in to the problem and solved it.



Code:

N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
(Reading database ... 1151066 files and directories currently installed.)
Preparing to unpack .../kodi_2%3a17.0~git20170210.1529-final-0xenial_all.deb ...
Unpacking kodi (2:17.0~git20170210.1529-final-0xenial) ...
dpkg: error processing archive /var/cache/apt/archives/kodi_2%3a17.0~git20170210.1529-final-0xenial_all.deb (--unpack):
 trying to overwrite '/usr/share/xsessions/kodi.desktop', which is also in package kodi-data 15.2+dfsg1-3ubuntu1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/kodi_2%3a17.0~git20170210.1529-final-0xenial_all.deb
N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
E: Sub-process /usr/bin/dpkg returned an error code (1)
owner@owner-Ubuntu:~$ sudo apt-get update
Ign:1 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu xenial InRelease                   
Hit:3 http://dl.google.com/linux/chrome/deb stable Release                   
Get:4 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]   
Hit:6 http://archive.canonical.com/ubuntu xenial InRelease                   
Hit:7 http://ppa.launchpad.net/team-xbmc/ppa/ubuntu xenial InRelease         
Get:8 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]   
Hit:9 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease         
Fetched 204 kB in 1s (191 kB/s)                             
Reading package lists... Done
N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension

Code:

owner@owner-Ubuntu:~$ sudo rm /etc/apt/apt.conf.d/50unattended-upgrades.distrib
rm: cannot remove '/etc/apt/apt.conf.d/50unattended-upgrades.distrib': No such file or directory
owner@owner-Ubuntu:~$ sudo rm /etc/apt/apt.conf.d/50unattended-upgrades.distrib
rm: cannot remove '/etc/apt/apt.conf.d/50unattended-upgrades.distrib': No such file or directory

Code:

owner@owner-Ubuntu:~$ ls -l /etc/apt/apt.conf.d/
total 68
-rw-rw-r-- 1 root root    49 Feb 15  2016 00aptitude
-rw-rw-r-- 1 root root    40 Feb 15  2016 00trustcdrom
-rw-r--r-- 1 root root  769 Jan 18 06:24 01autoremove
-r--r--r-- 1 root root 14518 Feb 22 17:23 01autoremove-kernels
-rw-r--r-- 1 root root    42 Jan 18 06:24 01-vendor-ubuntu
-rw-r--r-- 1 root root  129 Aug 22  2011 10periodic
-rw-r--r-- 1 root root  108 Aug 22  2011 15update-stamp
-rw-r--r-- 1 root root    85 Aug 22  2011 20archive
-rw-r--r-- 1 root root  243 Mar 11  2013 20dbus
-rw-r--r-- 1 root root  1432 Apr 18  2016 50appstream
-rw-r--r-- 1 root root  2331 Jun 22  2015 50unattended-upgrades
-rw-r--r-- 1 root root  2367 Feb  9 15:40 50unattended-upgrades.ucf-dist
-rw-r--r-- 1 root root  182 Feb 23  2014 70debconf
-rw-r--r-- 1 root root  305 May 24  2016 99update-notifier


Advice on which partitions to format for dual booting Windows 10 and Ubuntu?

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I have this lenovo laptop (l440) which currently has windows 10 installed (had windows 7). I want to dual boot with ubuntu however it already has 4 partitions on it. From what I understand the 4th partition can be formatted but what about the first 3? I already made recovery disks for Windows. i don't want to to get rid of my Windows system or files. I want to get the option "Install Ubuntu alongside Windows" during installation

What partitions are OK to format to make space for Ubuntu? It need 2 free partition spaces for installation right?

Below are my GParted and Windows disk management screenshots:

Works connected to DVI Monitor but blank screen on HDMI

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Hi all,

I thought I would be able to make life simple by installing lubuntu 16.04/10 while connected to one of my DVI monitors then when done, switch out the DVI for a HDMI and have everything ready to use as my Plex server but it hasn't worked out to well.

I first tried installing it while connected to the TV via HDMI and the install went well but I had problems with the resolution. I could only get it to 1920x1080 and the text on the icons and menus etc were huge, I tried everything (apart from coming here) and it was to difficult to see some things to set anything correctly if I could find it.

The graphics card is an Nvidia Geforce 210 and has VGA, HDMI & DVI Connections, the install and post setup went well and while connected to a BenQ monitor everything is great. Installed latest Nvidia drivers, X Server settings gui and got Plex and VNC ready.

Problem is when I disconnect the DVI-monitor and replace with HDMI-42" 1080p TV and turn on, after I get the auto login command, the screen goes blank.

I have installed SSH and can login but other than that I am staring blankly at a blank screen.

Can you please help?

ID10T needs help

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OK, I’m an ID10T, seriously. I installed Ubuntu because a friend said it was free & relatively virus free. I don't want to have to get a doctorate in software engineering to update my Unix OS. So here's my problem. I get this error message:

Failed to download repository information.

so I tried this in terminal and here is what I got:

Code:

eric@TARDIS-OptiPlex-745:~$ sudo apt update
[sudo] password for eric:
Get:1 http://pubmirrors.dal.corespace.com/ubuntu xenial InRelease [247 kB]
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]   
Get:3 http://archive.canonical.com/ubuntu xenial InRelease [11.5 kB]         
Get:4 http://pubmirrors.dal.corespace.com/ubuntu xenial-updates InRelease [102 kB]
Err:1 http://pubmirrors.dal.corespace.com/ubuntu xenial InRelease             
  At least one invalid signature was encountered.
Err:3 http://archive.canonical.com/ubuntu xenial InRelease
  At least one invalid signature was encountered.
Err:2 http://security.ubuntu.com/ubuntu xenial-security InRelease
  At least one invalid signature was encountered.
Err:4 http://pubmirrors.dal.corespace.com/ubuntu xenial-updates InRelease
  At least one invalid signature was encountered.
Reading package lists... Done
N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
W: Target Packages (partner/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/precise-partner.list:4
W: Target Packages (partner/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/precise-partner.list:4
W: Target Translations (partner/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/precise-partner.list:4
W: Target Translations (partner/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/precise-partner.list:4
W: Target DEP-11 (partner/dep11/Components-i386.yml) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/precise-partner.list:4
W: Target DEP-11-icons (partner/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/precise-partner.list:4
W: Target Packages (partner/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/xenial-partner.list:4
W: Target Packages (partner/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/xenial-partner.list:4
W: Target Translations (partner/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11 (partner/dep11/Components-i386.yml) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/xenial-partner.list:4
W: Target DEP-11-icons (partner/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/xenial-partner.list:4
W: GPG error: http://pubmirrors.dal.corespace.com/ubuntu xenial InRelease: At least one invalid signature was encountered.
E: The repository 'http://pubmirrors.dal.corespace.com/ubuntu xenial InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.canonical.com/ubuntu xenial InRelease: At least one invalid signature was encountered.
W: GPG error: http://security.ubuntu.com/ubuntu xenial-security InRelease: At least one invalid signature was encountered.
E: The repository 'http://security.ubuntu.com/ubuntu xenial-security InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://pubmirrors.dal.corespace.com/ubuntu xenial-updates InRelease: At least one invalid signature was encountered.
E: The repository 'http://pubmirrors.dal.corespace.com/ubuntu xenial-updates InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: Target Packages (partner/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:29 and /etc/apt/sources.list.d/precise-partner.list:4

I have no freaking idea what Any of this crap means. I just want to keep my software up to date. So does anyone have any simple, easy to follow instructions for me to do that? Even if it's " You're an id10t, uninstall Ubuntu & get Windows instead".

This is the version I am running: Ubuntu 16.04 LTS. Thank you for your time, patience, and assistance.

[ubuntu] Upgrading 14.04 LTS to 16.04 LTS problems with insserv

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I am getting ready to upgrade some of my production servers from 14.04 to 16.04 I ran the upgrade on one sample and was able to get it to work but encountered problems with insserv but was able to work through them without really understanding the problem.

I ran the upgrade on a second machine and it is badly broken. I have run

dpkg --configure -a
apt-get -f install
dpkg --configure -a --force depends
apt-get autoremove
apt-get clean

56 packages remain unconfigured.

even trying to configure one package generates a lot of warnings and some errors. Configuring each package with dpkg results in dependance errors from other packages, however when I get to the package that will attempt to configure I get a lot of warnings from insserv about the scripts and an error usplash and bittorrent

There is a loop involving service usplash and bittorrent
loop involving service usplash is at depth 1
loop involving service bittorrent is at depth 2

Thanks for any tips.

Live installation on EOL

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Other than doing a clean install, I'm currently on 5.10 64 bit currently downloading 16.10 VIA bittorrent, and I'm wondering since 5.10 is EOL and an upgrade isn't? possible (or is it?) would it be possible to take the 16.10 ISO and install or upgrade "on the fly" while my 5.10 is running? As it is my dinosaur 5.10 is currently up to date, so the story goes, also is a network upgrade/installation possible as well since my network drivers etc. are installed and this is working?

Get Stuck ubuntu 16.4 after updating

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Hi guys.i have updated my ubuntu and after updating and restarting when i enter pasword for login, ubuntu stuck and nothing is not work.
How can i see where is my problem and how can i fix that?

Edit:
But when i change my linux kernel everything is ok.my new kernel is 4.4.0-64 and when im running ubuntu with this kernel it is stuck.
My previous kernel is 4.4.0-31 and in this kernel everything is ok.
I found out that when i am login with guest user ,ubuntu doesn't stuck but in my user it stuck!!!

grub-install fails on installation

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I'm trying to install ubuntu to replace another linux distro on a dual boot with windows 10. I set up the other linux distro (Arch linux) long ago and I don't really remember exactly how I configured it but I think an iteration of GRUB is already first in the boot chain and it gives both the Windows Boot Manager and (formerly) Arch linux as options to boot into. I've tried several times to install ubuntu using a liveUSB but each time it fails with the following error:

Code:

Feb 28 12:31:03 ubuntu grub-installer: grub-install: error: cannot open `/boot/efi/EFI/ubuntu/shimx64.efi': No such file or directory.
Feb 28 12:31:03 ubuntu grub-installer: error: Running 'grub-install  --force "/dev/sda"' failed.

which seems related to this previous error message:
Code:

Feb 28 12:30:23 ubuntu ubiquity: mkdir: cannot create directory ‘/boot/efi/EFI/ubuntu’
Feb 28 12:30:23 ubuntu ubiquity: : Read-only file system
Feb 28 12:30:23 ubuntu ubiquity: Installing fwupx64.efi to EFI system partition.
Feb 28 12:30:23 ubuntu ubiquity: cp: cannot create regular file '/boot/efi/EFI/ubuntu/fwupx64.efi'
Feb 28 12:30:23 ubuntu ubiquity: : No such file or directory

The installer is set to install the boot manager at /dev/sda wherein fall all my partitions /dev/sda1, /dev/sda2... I've also tried creating a separate partition from which to boot from and received the same message.

Any help would be appreciated !

How to upgrade a kernel version alone?

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Hi,

I am new to ubuntu. I am currently using ubuntu 14.04.3 with kernel version 3.19.0-25. I have to upgrade the kernel alone. Please let me know how can i do this?


Regards
Pradeep

Installing Lubuntu LTS on HP Stream 11 32GB/4GB/N3060

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Hello

I just have decided to install Lubuntu 16.04 LTS as a sole OS on my brand new HP Stream 11 32GB eMMC, 4GB RAM, Intel N3060.

What are the problems I can expect to find during and after the installation?

Thank you

[ubuntu] Installation problems/questions

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I had Ubuntu 16.04.1 LTS loaded and I had been using it. The software updater indicated 16.10 was available and so I answered in the affirmative to install it. Then I saw that 16.10 seems to be an intermediate version because April 2017 is an ending date for it. So I downloaded 16.04.2 LTS, or thought I did, as at the end there was a screen with a button that said "extract...", which I clicked on and that opened another screen that had another button that said "extract...", which I clicked on. That seemed to finish the job as there was a message that said thanks for downloading... When I checked with the terminal command "lsb_release -a" it says it's version 16.10. I am confused. How come 16.04.02 LTS didn't overwrite 16.10? Should I stick with 16.10? What would happen come April this year? Is 16.04.02 LTS on my computer? If so, how do I make it the operating system?

xenial sources.list broken

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I upgraded from 14.04 to 16.04 a year or so ago. I noticed that I have not been receiving any updates. When I run 'sudo apt update' I get

Code:

% sudo apt update
Hit:2 http://ppa.launchpad.net/mscore-ubuntu/mscore-stable/ubuntu xenial InRelease
Get:3 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]   
Err:2 http://ppa.launchpad.net/mscore-ubuntu/mscore-stable/ubuntu xenial InRelease
  At least one invalid signature was encountered.
Get:1 http://id.archive.ubuntu.com/ubuntu xenial InRelease [247 kB]           
Err:3 http://security.ubuntu.com/ubuntu xenial-security InRelease             
  At least one invalid signature was encountered.
Ign:6 https://private-ppa.launchpad.net/commercial-ppa-uploaders/drfinance/ubuntu xenial InRelease
Get:4 http://id.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Err:1 http://id.archive.ubuntu.com/ubuntu xenial InRelease                   
  At least one invalid signature was encountered.
Err:7 https://private-ppa.launchpad.net/commercial-ppa-uploaders/drfinance/ubuntu xenial Release
  404  Not Found
Get:5 http://id.archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Err:4 http://id.archive.ubuntu.com/ubuntu xenial-updates InRelease           
  At least one invalid signature was encountered.
Err:5 http://id.archive.ubuntu.com/ubuntu xenial-backports InRelease
  At least one invalid signature was encountered.
Get:8 http://deb.opera.com/opera stable InRelease [2,592 B]
Err:8 http://deb.opera.com/opera stable InRelease
  At least one invalid signature was encountered.
Get:9 https://deb.opera.com/opera-stable stable InRelease [2,592 B]
Err:9 https://deb.opera.com/opera-stable stable InRelease
  At least one invalid signature was encountered.
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/mscore-ubuntu/mscore-stable/ubuntu xenial InRelease: At least one invalid signature was encountered.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://security.ubuntu.com/ubuntu xenial-security InRelease: At least one invalid signature was encountered.
W: GPG error: http://id.archive.ubuntu.com/ubuntu xenial InRelease: At least one invalid signature was encountered.
E: The repository 'http://id.archive.ubuntu.com/ubuntu xenial InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'https://private-ppa.launchpad.net/commercial-ppa-uploaders/drfinance/ubuntu xenial Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://id.archive.ubuntu.com/ubuntu xenial-updates InRelease: At least one invalid signature was encountered.
E: The repository 'http://id.archive.ubuntu.com/ubuntu xenial-updates InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://id.archive.ubuntu.com/ubuntu xenial-backports InRelease: At least one invalid signature was encountered.
E: The repository 'http://id.archive.ubuntu.com/ubuntu xenial-backports InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://deb.opera.com/opera stable InRelease: At least one invalid signature was encountered.
E: The repository 'http://deb.opera.com/opera stable InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://deb.opera.com/opera-stable stable InRelease: At least one invalid signature was encountered.

Is sources.list broken? Have I lost or mangled the signatures? How do I get a new sources.list, or fix the signatures?

best minimal install for notebook?

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So currently I'm running Ubuntu server 16.0.4 lts x86 64bit (natively) on my Mac book. I think using server version might be a mistake (wrong kernel tunning and modules) it runs very hot with just a little stress (like watching a movie). Is there a light weight version of Ubuntu for notebooks that might be less performance tunned better for battery life? Would i be better off just using Debian standard version (i only ask about another Distro on here because Debian is Ubuntu's parent and a Ubuntu user is a technically a Debian user).ps I am trying to avoid having lots of programs and GUI per installed so something like Lubuntu isn't exactly what im looking for. thanks in advance.
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