In the story relating to release upgrades for Ubuntu, below the end-of-life table for the Ubutu Releases from the Ubuntu Wiki – just to have it all in one place; I’m only including the LTS (long-term support) editions, as these should be the only ones deployed on live production systems. In the meantime, Maverick Meerkat is due in October 2010, supported for 2 years. (more…)
Posts Tagged ‘ubuntu’
[SOLVED] phpSysInfo – failed to open stream on Ubuntu 10.04?
2010
06.15
06.15
phpsysinfo eval : 2 Message : parse_ini_file(/usr/share/phpsysinfo/data/distros.ini): failed to open stream: No such file or directory File
There is a simple fix for this in version 3.0.5:
(more…)
[SOLVED] mysql-server5.1.5.141-3ubuntu12.1 hangs on upgrade
2010
06.15
06.15
There are a lot of words about the MySQL upgrade on Ubuntu 10.04 (64 bit specifically, perhaps the 32bit version too?) — it just hangs:
You get the hopeful message:
Preparing to replace mysql-server-5.1 5.1.41-3ubuntu12.1
but then nothing happens and everything just hangs. (more…)
Maverick Meerkat Alpha 1 (Ubuntu 10.10) is out
2010
06.04
06.04
Quick note – Ubuntu 10.10 – Maverick Meerkat is out. Mark Shuttleworth had already given a vision for it back in April 2010.
Let the “light”ning commence! 
“Maverick Meerkat” is the code name for Ubuntu 10.10, scheduled for release on 10 October 2010. See the Maverick release schedule. A quick sketch-up roadmap is over here.
Symlinks (symbolic links) in Samba Ubuntu for Windows
2010
06.04
06.04
To enable symlinks in Samba for filesharing across platforms inWindows, modify
/etc/smb/samba.conf
and add in the [global] section:
follow symlinks = yes
unix extensions = no
There has been some discussion about
wide symlinks = yes
However, due to the attack vector on Samba servers from Windows allowing file traversion, back in February 2010, you may want to force-set wide symlinks to no– it works without that declaration and is set to no by default.
Samba cheat sheet – Ubuntu
2010
06.02
06.02
Samba. Whopping goodness. Here are a few notes that help in the setup – from user creation, to directory settings etc
This blog post contains a few lessons learnt and thus by extension a migration plan from a Windows file server to a Samba-based one running on Ubuntu 10.04 LTS. I look at users, system vs smbpasswd user creation and linking (set that up in Webmin before you start, as well as for groups), share setups, general permissions and some very basic troubleshooting (as there weren’t many troubles, just headaches.) (more…)
Install Webmin on Ubuntu
2010
05.31
05.31
Just a quick note (as I keep forgetting, and a cut-and-paste solution is a quicker time to market) – but you knew that already. Installing Webmin is quite simple (download directly, or from the mirrors). Currently, 1.510-2 is the latest version – check on www.webmin.com for further details. As an aside, the book Webmin Kompakt – by Holger Reibold – is available for download!
So here’s a simple step-by-step: (more…)
Ubuntu Lucid Lynx (10.04) LTS is out
2010
04.29
04.29
They’ve passed their RC status and have moved into full Long-Term Release for Ubuntu Lucid Lynx — local mirrors are still showing the RC version, but it’s out!
What’s new?
- F-Spot replaces the GIMP
- PiTiVi video editor added
- GNOME 2.30
- New themes: Ambiance and Radiance
- New wallpaper
- Linux kernel 2.6.32
- New nVidia hardware driver
- Gwibber social media application
- Faster boot time, with a different look and feel on the bootsplash screen
- Ubuntu One adds contacts and bookmark sharing
- Ubuntu One music store integrated into Ryhthmbox
- Ubuntu Software Center 2.0
I’ve only played with the 10.04 Server edition so far, and the faster boot time is definately a big win (though some regressive network driver support still needed to be ironed out – hopefully sorted for the final release…)
Yay!!! Well done, guys!! Thanks for a new, even more sparkly LTS!
OpenSSL v1 released after 11 years of development
2010
03.30
03.30
After a long, hard struggle of 11 years, which started with these two entries:
| 23-Dec-1998: | Released OpenSSL 0.9.1c |
| 23-Dec-1998: | Official start of the OpenSSL project |
we are now at the point of “a major release” with v1.0.0 being made available. Fighting tooth and nail not to be a 1.0.0, we’ve seen iterations such as 0.9.8d to 0.9.8n (taking a page out of Google’s book of running pre-release?), though, to be fair, they started at 0.9.1c.
Go on, then — go and get it!
Ubuntu 10.04 LTS now in beta
2010
03.20
03.20
Ubuntu 10.04 LTS (beta) now out...
Ubuntu 10.04 went beta yesterday afternoon, with downloads at http://releases.ubuntu.com/10.04/, otherwise from the download mirrors. Lucid Lynx, as it’s called, enjoys LTS support (ie 5 years out the box).
This version promises as a better (and faster) boot experience, new themes, version 2.6.32 as the Linux kernel, Firefox as default browser — with default browser page changed to Yahoo! (that’s new!) nVidia hardware support using open source drivers has improved, and a whack of new features for the Ubuntu Enterprise Cloud have been included. (more…)
Postfix maximum individual mail size and mailbox size
2009
10.14
10.14
If you’re getting the "5.3.4 Messag exceeds fixed limit” error, check on the default vs set values in your /etc/postfix/main.cf using
postconf -d (for the default)
and
postconf -n (for the values you have set manually in the main.cf)
Default for message_size_limit (maximum size per mail) is 10240000 (bytes, ie approx 10MB)
Up this to your desired value, eg 30MB by setting
postconf -e "message_size_limit = 30720000"
specifiying the size in bytes.
You can reset the maximum mailbox size using the same method (below just resets to the default value)
postconf -e "virtual_mailbox_limit = 51200000"
But you knew that already!
Create a new certificate for Ubuntu the easy way (but you knew that already)
2009
06.14
06.14
For the self-signed certificate:
sudo a2enmod ssl
wget http://librarian.launchpad.net/7477840/apache2-ssl.tar.gztar -zxvf apache2-ssl.tar.gz
sudo cp apache2-ssl-certificate /usr/sbin/
sudo cp ssleay.cnf /usr/share/apache2/
sudo mkdir /etc/apache2/sslcd /etc/apache2/ssl
sudo apache2-ssl-certificate -days 365
sudo cp /etc/apache2/sites-available/default /etc/apache2/sites-available/sslsudo ln -s /etc/apache2/sites-available/ssl /etc/apache2/sites-enabled/ssl
Modify the ssl site-available:
NameVirtualHost *:443<virtualhost *:443>
ServerAdmin webmaster@localhost
SSLEngine On
# the following lines are links to the certs
SSLCertificateFile /etc/apache2/ssl/apache.pem
DocumentRoot /var/www/
Everything else stays the same.
Now all that remains is to restart your server:
sudo /etc/init.d/apache2 restart
All done!
Found this online
USB Power Management
2008
08.15
08.15
This is quite useful – if your USB connector times out your device connected to the Ubuntu machine (from here) – determine the idea using either
lsusb
or
lspci
It’s pretty self-explanatory…
105 The user interface for dynamic PM 106 --------------------------------- 107 108 The user interface for controlling dynamic PM is located in the power/ 109 subdirectory of each USB device's sysfs directory, that is, in 110 /sys/bus/usb/devices/.../power/ where "..." is the device's ID. The 111 relevant attribute files are: wakeup, level, and autosuspend. 112 113 power/wakeup 114 115 This file is empty if the device does not support 116 remote wakeup. Otherwise the file contains either the 117 word "enabled" or the word "disabled", and you can 118 write those words to the file. The setting determines 119 whether or not remote wakeup will be enabled when the 120 device is next suspended. (If the setting is changed 121 while the device is suspended, the change won't take 122 effect until the following suspend.) 123 124 power/level 125 126 This file contains one of three words: "on", "auto", 127 or "suspend". You can write those words to the file 128 to change the device's setting. 129 130 "on" means that the device should be resumed and 131 autosuspend is not allowed. (Of course, system 132 suspends are still allowed.) 133 134 "auto" is the normal state in which the kernel is 135 allowed to autosuspend and autoresume the device. 136 137 "suspend" means that the device should remain 138 suspended, and autoresume is not allowed. (But remote 139 wakeup may still be allowed, since it is controlled 140 separately by the power/wakeup attribute.) 141 142 power/autosuspend 143 144 This file contains an integer value, which is the 145 number of seconds the device should remain idle before 146 the kernel will autosuspend it (the idle-delay time). 147 The default is 2. 0 means to autosuspend as soon as 148 the device becomes idle, and -1 means never to 149 autosuspend. You can write a number to the file to 150 change the autosuspend idle-delay time. 151 152 Writing "-1" to power/autosuspend and writing "on" to power/level do 153 essentially the same thing -- they both prevent the device from being 154 autosuspended. Yes, this is a redundancy in the API.
Wine and MSI files (but you knew that already)
2008
08.11
08.11
So you’ve downloaded UltraEdit v14, arguably one of the best text-editing and code-editing environments in the Windows World (ok, so no IDE, but for that you’d use a Zend Studio offering), and you want to run it in Wine. Now, assuming you’re running Wine 1.0 (ideally 1.1.0 or later), this is not a problem on Ubuntu. Just the cursor keeps jumping… The ue_english.zip (or other language suffix) file contains the installer msi. How to run on Ubuntu? Quite a quick and simple process, just one line:
wine msiexec /i ue_english.msi |
Hey presto, you’re done! Just follow the prompts. There will be one or two errors (downloading and installing UltraCompare – a practical, visual answer to diff throws some…) but it becomes sortof useable. Until UltraEdit for Linux (as per the forums) is released… Can’t wait!!
Ubuntu 8.04 Dual-screen
2008
07.22
07.22
From the bug-report there’s a simple solution to dual-screening on Hardy…
Users upgrading from Dapper Drake to Hardy Heron who have used Xinerama to support dual monitors now have to use a different method (xrandr I think). This isn’t mentioned in the release notes and the graphical tool for configuring dual monitors is under “Screen Resolution” in the System -> Preferences Menu. The point being that it is quite hard to find.
Users with multiple desktops appear to have add the following to the xorg.conf file “Screen” section:
SubSection “Display”
Depth 24
Virtual 4000 2048
EndSubSectionThen the screen resolution tool works fine for me.
Me too! Just to complete this (it’s all out there…):
Unfortunately, for creating dual-screen layouts there is still one manual configuration step required, which is to add a Virtual framebuffer size. The size needs to be equal or greater than the maximum combined size of your displays. For example, if you have two 1920×1200 monitors you wish to put side-by-side, you would add a Virtual line like this:
Section "Screen" Identifier "Default Screen" Device "Configured Video Device" DefaultDepth 24 SubSection "Display" Depth 24 Virtual 3840 1200 EndSubSection EndSectionNote that setting Virtual to larger than 2048×2048 disables 3d acceleration (i.e., no Compiz).
