Hi, I've been experiencing a great deal of frustration recently with intermittent freezes / crashes on my Debian Sid system (a Lenovo W550s). The symptoms are that the screen totally freezes and the system becomes completely unresponsive (even ssh attempts from another machine fail), and the only thing that seems to have any effect is a hard reboot (holding down the power button until the system restarts).
Upon reboot, I can't find anything at all interesting in 'journalctl -b -1', or /var/log/syslog - the former just shows everything looking normal until the moment of the crash, at which point the log just ends, and the latter also just shows everything seeming to be fine until the moment of the crash, and then shows the boot messages from the reboot. Any ideas of what could be causing this, or how I could go about debugging it? I've been using this machine for years without experiencing anything like this, and I'm not sure for how long this has been a problem. I did recently upgrade from stable to unstable, but I'm not sure whether or not the problem's initial occurences coincide with the upgrade. Celejar
