Radeon R5 230 on Ubuntu Linux 13

It works. Haven’t bought a graphics card since the mid 1990s, but did this because Gnome 3 feels a lot smoother with some extra cycles and memory. All the eyecandy effects now seem to run at around 20 fps, and the colors are nicer. Before, they were more like 10 fps and jumpy. This shows up in lspci as VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450]. Seems to be a bit of a power hog, but it doesn’t use a fan, so it’s not going to burn too much coal.

Also, programs run a little smoother because the memory isn’t being shared with a graphics controller. The main effect, though, is that the corner, where you push to get the task switcher/menu and the application shortcuts, comes up in around 1/4th of a second instead of one second. That makes a difference.

Free vs. Proprietary Drivers

You can choose to run this with the Free drivers or the Proprietary drivers. The free ones work well, but the proprietary ones will give you faster effects. I can’t quite tell, but it seems like the window manager is a little slower with the proprietary drivers.

Youtube/Flash videos interact better with the proprietary drivers.

Video games seem to run faster with the proprietary drivers, but the windowing system starts lagging after you run a video game, so the games probably use up all the memory on the card.

w32tm reports the computer did not resync because no time data was available

I got the message “the computer did not resync because no time data was available” after running “w32tm /resync /force”.

I had followed the various howtos out there*, and checked them against each other : as expected, they differed slightly, but none of them worked for me. Well, it turned out that I needed to run the update command, below.
Continue reading w32tm reports the computer did not resync because no time data was available

Debian and Ubuntu Networking Configuration /etc/network/interfaces with a Static IP Address

This is easy to find anywhere, and it’s here too. This one includes the dns-* lines that will be read by resolvconf(8).

root@server:/etc/network# cat interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.1.251
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.254
dns-nameservers 192.168.1.250
dns-search mydomain.local

Also, here’s a cheatsheet for setting that netmask:

255.255.255.252  /30    2  nodes
255.255.255.248  /29    6  nodes
255.255.255.240  /28   14  nodes
255.255.255.224  /27   30  nodes
255.255.255.192  /26   62  nodes
255.255.255.128  /25  126  nodes
255.255.255.0    /24 "Class C" 254 nodes

Note that the number of nodes is the total number of addresses, less two. It’s less two because the lowest value is the address of the entire network. The highest value is the broadcast address. So if the netmask is 0, then the lowest value is 0, and that’s the address of the network, and the highest value is 255, which is the broadcast address.