I have a similar laptop, a T400, and I have been seeing the same problem lately.
This is not a laptop-mode-tools bug. It is believed to be a kernel bug in the cpufreq driver. To confirm, could you try to reproduce the problem after disabling the cpufreq module? If possible, also ensure that no other system tool plays with the cpufreq driver. On Sunday, December 25, 2011, Jardi A. Martinez J. wrote: > Package: laptop-mode-tools > Version: 1.60-1 > Severity: important > File: laptop-mode-tools > > Dear Maintainer, > > After installing laptop-mode-tools my laptop (a Thinkpad T420) wouldn't > shutdown. Every time I did shutdown -h now, it would reboot. I also > noticed that it just happened when it running on battery when on power > it would do as expected. > I was using the latest kernel (3.1.0) and then installed the one from > backports but it showed the same behavior. > My laptop has a fingerprint reader and when shut down, it's always on. > So, when I ussually shut it down the laptop goes completely off and then > the fingertip reader comes back on, so I can start the laptop sliding my > finger there. But when laptop-mode-tools is installed, the laptop goes > completely off and then the fingerprint reader comes back on and right > after that my laptop starts booting back on. > When I uninstall the package, and shut the laptop down, it comes back on > but on the next shutdown it starts working as espected. > > > > > -- System Information: > Debian Release: wheezy/sid > APT prefers testing > APT policy: (500, 'testing') > Architecture: amd64 (x86_64) > > Kernel: Linux 3.1.0-1-amd64 (SMP w/4 CPU cores) > Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) > Shell: /bin/sh linked to /bin/dash > > > > -- Ritesh Raj Sarraf RESEARCHUT - http://www.researchut.com "Necessity is the mother of invention."
