Desktop

Cluster ssh with nice fonts !

Joar Jegleim 1 Comment

Cluster ssh is super nice, but out of the box it got ugly and small fonts.
Here’s my Cluster ssh config, which I respectfully ripped from the net:

# $HOME/.clusterssh/config
terminal_args=-fa  'DejaVu Sans Mono:style=Book' -fs 11
# note these are not consistent with the TTF font selection, so have to 'adjust' accordingly
#terminal_size=80x24
# for terminal_args=-fa  'DejaVu Sans Mono:style=Book' -fs 12:
#terminal_size=133x36
# for terminal_args=-fa  'DejaVu Sans Mono:style=Book' -fs 11
terminal_size=120x34

Thank you dansnotebook.blogspot.no

CentOS 7 dhcp + custom ‘search domain’

Joar Jegleim Leave a comment

I’m running CentOS 7 on my workstation these days, like it a lot.
At work our dhcp setup dns search for the domain containing our windows hosts but the Unix and Linux hosts I work with are in an other domain.
In the network manager gui in gnome3 I can’t seem to figure out where to add this second search domain, so I’ve been adding it manually to resolv.conf after each boot …

Got tired of that so i added:

DOMAIN='myDomain.no'

in /etc/sysconfig/network-scripts/ifcfg-eno1 and did a 

systemctl restart network.service

problem solved.

thnx superuser.com

UPDATE 30th october 2015:
This does not work at all at my workstation at my new job.
I’m not using NetworkManager any more, not sure if that’s the reason though.

By setting SEARCH in /etc/sysconfig/network instead things got a lot better:

# /etc/sysconfig/network
SEARCH='example.com sub.example.com'

Enable touchpad in gdm3 login prompt (Fedora 20)

Joar Jegleim Leave a comment

Enabling tapping support in Gnome 3, I still don’t have support for that at the gdm 3 login prompt .

In /etc/X11/xorg.conf.d/50-synaptics.conf I got tapping support for my mousepad at the gdm3 login prompt by adding

Section "InputClass"
Identifier "touchpad catchall"
Driver "synaptics"
MatchIsTouchpad "on"
Option "TapButton1" "1"
Option "TapButton2" "2"
Option "TapButton3" "3"
EndSection

The file wasn’t there, so I created it.

Thnx jaisejames.wordpress.com

Fedora (20) enable tuned, save power

Joar Jegleim Leave a comment

I noticed by switching to Fedora, from Ubuntu, my battery time got lower.
I suspect Fedora isn’t as laptop friendly out of the box as Ubuntu is .

Installing Tuned helped a lot on power consumption for my laptop:

$ sudo yum install tuned
$ sudo systemctl enable tuned.service
$ sudo systemctl start tuned.service
$ sudo tuned-adm active

There seem to be a debate whether powersave og balanced is the best option .

Stuff todo in Ubuntu 14.04 after install

Joar Jegleim Leave a comment

The atareao-team ppa ( Install on your own risk ) got some neat indicators for Ubuntu:

# add-apt-repository ppa:atareao/atareao
# apt-get update
# apt-get install calendar-indicator
# apt-get install my-weather-indicator

The FFmpeg plugin for GStreamer 0.10 is not available in the official Ubuntu 14.04 repositories (because FFMpeg is not available either – libav is used instead) and because of this, Firefox doesn’t support the H.264 codec.
The mc3man trusty-media ppa fix this for you ( Install on your own risk ) .

# add-apt-repository ppa:mc3man/trusty-media
# apt-get update
# apt-get install gstreamer0.10-ffmpeg

You can check you H.264 support at http://www.youtube.com.html5

If you use skype (which is 32bit) and are on 64bit, install these packages to enable support for your default desktop theme as well as enable the skype tray icon

# apt-get install gtk2-engines-murrine:i386 sudo apt-get install gtk2-engines-pixbuf:i386 sni-qt:i386

Latest chromium-browser have removed flash support, the pepper-flash-plugin enable flash :

# pepperflashplugin-nonfree

I mostly ripped off these customizations from webupd8.org .

Ubuntu 13.10 console resolution

Joar Jegleim 5 Comments

Switching to the binary Nvidia driver usually ‘break’ the nice boot splash and console resolution in Ubuntu. It has something to do with Linux being gpl licensed and the kernel code will be tainted if you integrate non-gpl code / or the kernel crew simply won’t integrate binary code, which I personally respect .

I’ve been using some VESA framebuffer since like for many years, and for the last 3-4 years I’ve been using the uvesafb module to get high resolution console and boot splash on my desktop.
I just noticed my ‘howto’ for getting this stuff setup in Ubuntu 13.10 no longer works, well it did actually work but I was put off when the ‘hwinfo’ package no longer was available.

I google’ed this for about 20 minutes, and tried a couple solutions that didn’t work, so I’m pasting my personal ‘howto’ on how I got this working on my 13.10.

# apt-get install v86d

Reboot, and in grub type ‘c’, then type ‘vbeinfo’ to list resolutions supported by your card.

Edit your /etc/default/grub file and make sure you use your desired resolution and bit depth listed from ‘vbeinfo’

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset video=uvesafb:mode_option=1280x800x32,mtrr=3,scroll=ywrap"

Now scroll down a bit in that file and edit this line also to match your previous change

GRUB_GFXMODE=1280x800

Now force the use of framebuffer

# echo FRAMEBUFFER=y | tee /etc/initramfs-tools/conf.d/splash

Now update grub and your initramfs image and you’re done!

# update-grub2 && update-initramfs -u

What I used to do was installing hwinfo which would show me supported console resolutions from terminal in my X session (Unity in my case), but since Ubuntu 13.10 has dropped support for HAL ( if I got it right) that package is no longer available.
I kind of solved it with vbeinfo from within grub, but that isn’t really optimal since vbeinfo listed a lot more resolutions than could fit within 1 page, and I couldn’t pipe that command to less. Luckily I saw one of the resolutions I wanted to use so that wasn’t really a problem after all.

Note that since I’m using the uvesafb, I don’t get like really hardware accelerated console, and that if I use 1920x1080x32 which my card supports as a maximum, stuff get imho a bit slow. That is, text rolling off screen is slow and a bit stuttering.
I’ve found that 1280×800 is a perfect compromise in my case.