Ubuntu: physical power button not working

At some point the physical power button on my file server (ubuntu 12.04) stopped working and I had to do a software shutdown everytime. The solution is to (re) install acpi: sudo apt-get install acpi sudo apt-get install --reinstall acpi-support

CRTL+Space not working in Ubuntu applications

For some time now content assist and the command panel have been broken in Eclipse and Ubiquity running under Ubuntu; they wouldn't trigger the pop-up menues when pressing CRTL+Space. The reason is ibus intercepting that key combination and it's just as easily solved [1]: Open gconf-editor. Choose desktop -> ibus -> general -> hotkey. Open … Continue reading CRTL+Space not working in Ubuntu applications →

Changing sub-pixel rendering in Ubuntu 12.04

In older Ubuntu releases one could change the sub-pixel rendering in the system settings, but that option was unfortunately removed in newer releases. Fortunately it is still accessible via gnome settings [1]: Open dconf-editor In the left pane, go to /org/gnome/settings-daemon/plugins/xsettings In the right pane, change the value of the rgba-order key to bgr: or … Continue reading Changing sub-pixel rendering in Ubuntu 12.04 →

Ubuntu 12.10 64bit on the HP ProBook 4720s

With the trusty HP ProBook 4720s refusing to give up it's time to give the new Ubuntu 12.10 a spin. After having tried out the 11 and the 12 series with mixed feelings [1], [2]. Installation Installation of the live CD image on a USB stick was easy and without any problems. The system booted … Continue reading Ubuntu 12.10 64bit on the HP ProBook 4720s →

Reducing power consumption on the HP Probook 4720s and Ubuntu 12.04

As said earlier, Ubuntu 12.04 does a good job with power management on the 4720s. With some manual settings power consumption can be further decreases, albeit not much this time. I wrote this script which takes a parameter: on: enable power management settings off: disable power management settings extra: on + enable extensive power management … Continue reading Reducing power consumption on the HP Probook 4720s and Ubuntu 12.04 →