[[!meta title="Dell Latitude E5500 and Magic SysRq"]] [[!meta date="2009-11-17"]] [[!meta author="rohieb"]] [[!meta license="CC-BY-SA 3.0"]] At work I’m using the Dell Latidude E5500 notebook, running on Debian testing. Today, I had some issues with Xorg which could not detect my keyboard and mouse, so I tried to do the Magic SysRq tricks (you can read about it at [Wikipedia][1]). Unfortunatley, to press `SysRq` (on `F10`), I had to use the `Fn` key, so if I pressed e. g. `Alt`+`Fn`+`SysRq`+`U`, the `U` was detected as `keypad 4` because of the `Fn` key. Luckily, it works as intended if you release the `Fn` key after having pressed `Fn`+`SysRq`, so to remount all mounted filesystems in read-only mode, you would actually hold `Alt`, hold `Fn`, hold `SysRq`, release `Fn`, press `U`. Never thought notebook keyboards were so smart :-) [1]: (http://en.wikipedia.org/wiki/Magic_SysRq) [[!tag Debian howto Debian_testing Dell_Latitude Linux SysRq]]