CommonQuestions
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Contents
- General
- Installation & Configuration
-
Usage
- How to search and get more information about a package in Ubuntu?
- What are the build log for packages?
- How to discover in which repository (main, universe, multiverse) a package is
- How to upgrade a system to the most upgraded state, as from a beta to a GA release. (not migrating between major release as 14.04 -> 14.10)
General
What are the new features for each release?
Ubuntu 14.10 Release Notes: https://wiki.ubuntu.com/UtopicUnicorn/ReleaseNotes
Ubuntu 14.04.1 Notes: https://wiki.ubuntu.com/TrustyTahr/ReleaseNotes
What is the URL to download Ubuntu for Power?
What is the URL to download Ubuntu daily images?
DVD version: http://cdimage.ubuntu.com/ubuntu-server/daily/current/
Netboot version: http://ports.ubuntu.com/ubuntu-ports/dists/utopic/main/installer-ppc64el/current/images/netboot/
Installation & Configuration
How to Report an installation bug effectively?
It's important to add the log in the bug report. To get it you need:
- At the error message, choose "Back" button;
- Go to the item "Exit to shell"
Get the file /var/log/syslog
How to use Ubuntu as a hypervisor?
Note Recommended 14.10 or later
Ubuntu is able to be used as a hypervisor, as an alternative to PowerKVM. Just install in bare metal (NV) it following the steps in Running Ubuntu non-virtualized on POWER8 After the installation you need:
- Install the missing virtualization packages:
# sudo apt-get install qemu-user qemu-utils cloud-image-utils qemu-system-ppc qemu-slof libvirt-bin numactl
- Add the users that would be able to run virtual machines into the kvm group:
# sudo usermod -a -G kvm <user>
- Disable the SMT:
# sudo ppc64_cpu --smt=off
- Enable KVM module in the kernel (Add a line "kvm_hv" in /etc/modules in order to automatically load it after a reboot):
# sudo modprobe kvm_hv
- Assure that you have the /usr/bin/qemu-system-ppc64le file, otherwise, create a link as follow. This is temporary, check [1]:
# sudo ln -s qemu-system-ppc64 /usr/bin/qemu-system-ppc64le
- Allow apparmor to access the SLOF (firmware). This is temporary, check [2]:
# echo "/usr/share/slof/** r," >> /etc/apparmor.d/abstractions/libvirt-qemu
- If you hit "failed to parse default acl file `/etc/qemu/bridge.conf", you need to edit (or create) file /etc/qemu/bridge.conf and add:
allow br0
- If you hit "failed to create tun device: Operation not permitted", you need to set the setuid attribute:
# chmod u+s /usr/lib/qemu/qemu-bridge-helper
[1] https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/1374558
[2] https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1374554
Apt-get is using IPv6 to download repository information and I don't have it. How do I force IPv4?
Just run the following command:
echo "Acquire::ForceIPv4 true;" > /etc/apt/apt.conf.d/99force-ipv4
Usage
How to search and get more information about a package in Ubuntu?
If you have Ubuntu installed on a machine, you can run the following command to grab the package version and details for the Ubuntu version you are using:
apt-cache search <package name>
On the other side, you can go to the web and look for the package on the Ubuntu webpage:
What are the build log for packages?
How to discover in which repository (main, universe, multiverse) a package is
Append the package name at https://launchpad.net/ubuntu/+source/, as (https://launchpad.net/ubuntu/+source/nmap for nmap). Look at the Component field.
How to upgrade a system to the most upgraded state, as from a beta to a GA release. (not migrating between major release as 14.04 -> 14.10)
Run the following commands:
sudo apt-get update sudo apt-get upgrade
ppc64el/CommonQuestions (last edited 2018-05-10 13:47:29 by breno-leitao)