Nuno Sousa's Corner

Today I had an issue updating the kernel on my company's laptop. I ended up reconfiguring it from strach istead of doing the oldconfig option (make oldconfig didn't ask anything but the kernel hard locked on boot). I took the oportunity to try to get a more duration out of the battery. How? By consuming less power. PowerTop came in and lend a helping hand but it was not sufficient. When I enabled USB Suspend (CONFIG_USB_SUSPEND) the keyboard didn't work well. I have a keyboard, mouse and webcam connected to a hub that I use when I'm on my desk. Everything was working, power was being saving, even for the keyboard. The problem was that when the keyboard entered power saving mode and I pressed a key the first key that I pressed would be lost. The documentation talks about this issue but I didn't want to loose on the opportunity to increase my laptop's autonomy. Solution: udev to the rescue. I created a udev rule that detects the USB Keyboard (by vendor and produ

Today I was building the RRDTool from source and I noticed the output of the configuration part was ordering a CD. config.status: executing po-directories commands config.status: creating po/POTFILES config.status: creating po/Makefile config.status: executing default commands checking in... and out again ordering CD from http://tobi.oetiker.ch/wish .... just kidding ;-) ---------------------------------------------------------------- Config is DONE! This shows that hackers love to play ;-)