You must turn on SysRq support in kernel config (CONFIG_MAGIC_SYSRQ=y).Can you get sysrq-T output?
As I didn't know whats that command, I googled for it and found that I must hit Alt+SysRq+t and then debug information should be printed out, am I right? But I tried that, and nothing happens. SYSCTL is enabled in the kernel config.
If you really need this output, I would be pleased if anybody can inform me how I can get it. Thanks in advance!