I'm not sure what you mean by "Linux is not Windows" in this context. In my experience, most installs of Windows these days (Windows 7 and Windows 8) are 64-bit installs. That's what is sold at Best Buy on their desktops and laptops for example. On the contrary, when a user goes to install Ubuntu, they're recommended to use 32-bit. When I'm on forums, people mention compatibility problems with 64-bit Linux and recommend 32 bit instead. Maybe I'm outdated on that information? Can you elaborate?

Do you remember Firefox trying to cancel 64-bit build for Windows? Stating they have a lot of extra bugs in it?

In Windows they still run 32-bit software on 64-bit OS, but a typical Linux install will have not a single 32-bit program.

That's why not having a 64-bit version is pathetic.

In fact, the majority of software installed on my 64-bit Windows 7 system is 32-bit. Sad.

Oh, I see what you mean. My apologies. Thanks!

I've also installed redshift and redshift-gtk as suggested and they both crash on start.

Altough redshift doesn't if supplied with all the required parameters outright.

Create a config file in ~/.config/redshift.conf with the manual parameters you use, and redshift-gtk should work.

Sample config is at http://jonls.dk/2010/10/redshift-1-6-released/ - I only need to set lat and lon to get it to run, though I also have temp-night set for my personal preference.

Thanks, it works that way. Still I have to ask: are they crazy to make their program crash silently when no config is present?

I seem to remember it looks for gnome-clock to discover your location, and gives up if that's not found, although the GTK version does unhelpfully just exit without a message. It can't work without knowing your latitude and longitude to work out sunset/sunrise times.

redshift segfaults actually.

Please submit that to the author. Segfaults should not happen.

Filed a bug against libgeoclue.

I have it running fine under 64-bit Ubuntu, sounds like it might be a problem with KDE. Have you tried looking around for other packages for it?

Should I? I've added an entire repository, they have all means to deliver just the right package to me, and they fail it.

This doesn't sound like a KDE problem:

    % ldd `which xflux`
        linux-gate.so.1 =>  (0xf773b000)
        libXxf86vm.so.1 => not found
        libXext.so.6 => not found
        libX11.so.6 => not found
        libstdc++.so.6 => not found
        libm.so.6 => /lib32/libm.so.6 (0xf76f6000)
        libgcc_s.so.1 => not found
        libc.so.6 => /lib32/libc.so.6 (0xf754e000)
        /lib/ld-linux.so.2 (0xf773c000)

I use xflux on a 64-bit Debian system and it works. I'm not sure, but you might have to specify the location parameters when starting it.