Hi Iurii, On 1/10/20 3:19 AM, Iurii Zaikin wrote: > Off topic: I wonder if Magic Sysrq could be extended with reasonable > effort to be triggered by a sequence of keystrokes which would be less > likely to be generated by a noisy serial. That's what I do in 3/3 patch from the series: https://lkml.kernel.org/r/20200109215444.95995-4-dima@xxxxxxxxxx Or do you mean something else? Thanks, Dmitry