Ubuntu: Difference between revisions

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To remove old kernel entries in GRUB ([http://digitalpbk.blogspot.com/2008/11/ubuntu-remove-old-kernel-grub-list-long.html] and [http://www.linuxquestions.org/questions/ubuntu-63/need-to-remove-old-versions-of-ubuntu-kernel-466660/], or other sol [http://www.howtogeek.com/howto/ubuntu/clean-up-ubuntu-grub-boot-menu-after-upgrades/])
To remove old kernel entries in GRUB ([http://digitalpbk.blogspot.com/2008/11/ubuntu-remove-old-kernel-grub-list-long.html] and [http://www.linuxquestions.org/questions/ubuntu-63/need-to-remove-old-versions-of-ubuntu-kernel-466660/], or other sol [http://www.howtogeek.com/howto/ubuntu/clean-up-ubuntu-grub-boot-menu-after-upgrades/])
:<source lang="bash" enclose="prevalid">sudo apt-get remove --purge 2.6.28-11-* #to remove kernel 2.6.28-11</source>
:<source lang="bash" enclose="prevalid">sudo apt-get remove --purge 2.6.28-11-* #to remove kernel 2.6.28-11</source>

An even easier solution is to install '''[http://www.ubuntugeek.com/how-to-remove-the-old-kernel-versions-from-ubuntu-using-ubuntu-tweak.html Ubuntu Tweak]''', and select <tt>Package Cleaner</tt> &rarr; <tt>Clean Kernels</tt>.


== Devices ==
== Devices ==

Revision as of 09:52, 8 November 2010

This page is dedicated to the Ubuntu Linux distribution or derivatives

References

Install

Net boot install from Internet using GRUB

Reference: here

  • Copy files initrd.gz and linux from one of the repository below to /boot
    • Ubuntu 10.04 LTS Lucid Lynx amd64
    • Ubuntu 10.04 Karmic Koala amd64
    • Ubuntu 9.04 Jaunty Jackalope amd64
  • Restart, and type in GRUB command-line (press c in GRUB menu):
root (hd0,6)                         # Select partition where /boot is. Type "root (hd0," and then TAB to get a list of partitions
linux /boot/linux                    # ... or kernel /boot/linux for GRUB 1
initrd /boot/initrd.gz
boot

Administration

Remove old kernels from GRUB

To remove old kernel entries in GRUB ([1] and [2], or other sol [3])

sudo apt-get remove --purge 2.6.28-11-*     #to remove kernel 2.6.28-11

An even easier solution is to install Ubuntu Tweak, and select Package CleanerClean Kernels.

Devices

To see information on all connected input devices:

cat /proc/bus/input/devices
I: Bus=0003 Vendor=0c16 Product=0002 Version=0110
N: Name="Gyration Gyration RF Technology Receiver"
P: Phys=usb-0000:00:06.1-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:06.1/usb3/3-1/3-1:1.0/input/input7
U: Uniq=
H: Handlers=kbd event7 
B: EV=10001f
B: KEY=837fff 2c3027 bf004444 0 0 1 c04 a27c000 267bfa d941dfed e09effdf 1cfffff ffffffff fffffffe
B: REL=40
B: ABS=1 0
B: MSC=10

Medibuntu

To install the Medibuntu repositories (see Community or here)

sudo wget http://www.medibuntu.org/sources.list.d/$(lsb_release -cs).list --output-document=/etc/apt/sources.list.d/medibuntu.list
sudo apt-get -q update
sudo apt-get --yes -q --allow-unauthenticated install medibuntu-keyring
sudo apt-get -q update

Troubleshoot

CIFS shares not properly unmounted during shutdown

When shutting down the PC with Samba (CIFS) shares mounted, the shutdown sequence hangs with the following error messages:

CIFS VFS: server not responding
CIFS VFS: no response for cmd 50 mid xxx 

This is apparently a bug that is creeping in Ubuntu since a long time ago. Basically there are 2 possible fixes (as in [4], [5], [6]):

The one I use, proposed by Daniel Ellis here [[7]]:

sudo mv /etc/rc0.d/S31umountnfs.sh /etc/rc0.d/K31umountnfs.sh
sudo mv /etc/rc0.d/S40umountfs /etc/rc0.d/K40umountfs
sudo mv /etc/rc6.d/S31umountnfs.sh /etc/rc6.d/K31umountnfs.sh
sudo mv /etc/rc6.d/S40umountfs /etc/rc6.d/K40umountfs

Another one (not tried yet):

sudo ln -s /etc/init.d/umountnfs.sh /etc/rc0.d/K15umountnfs.sh
sudo ln -s /etc/init.d/umountnfs.sh /etc/rc6.d/K15umountnfs.sh