Hi, On Saturday 08 July 2006 04:15, Sanjoy Mahajan wrote: > I'm trying 2.6.18-rc1, on a Thinkpad T60 (dual-core, T2400) running > Ubuntu 6.06. The kernel is SMP, PREEMPT, and has many of the lock > validation options turned on. It has a SATA hard drive. During boot > the lockdep checker reports good news: > > [ 20.936404] Good, all 218 testcases passed! | > > When I pressed Fn-F4 (for suspend-to-ram), it began to suspend, > blanked the screen, and then came back right away to the X session. I > don't think it ever made it into suspend mode. And this dmesg showed > up: > > [ 459.756000] BUG: warning at kernel/lockdep.c:1799/trace_hardirqs_on() > [ 459.756000] [<c0105aeb>] show_trace+0x1b/0x20 > [ 459.756000] [<c0105b14>] dump_stack+0x24/0x30 > [ 459.756000] [<c013c186>] trace_hardirqs_on+0x166/0x180 > [ 459.756000] [<c010522d>] do_general_protection+0xcd/0x220 > [ 459.756000] [<c0103e01>] error_code+0x39/0x40 This is a warning from the lock validation code and I think you should report it separately on LKML. If you are interested in debugging the suspend issue and have some time, please do the following: 1) disable all of the lock validation options and see if that helps; if not 2) additionally compile the kernel without SMP and see if that helps; if not 3) additionally compile the kernel without PREEMPT and see if that helps. You can also boot the kernel with init=/bin/bash and trigger the suspend with 'echo mem > /sys/power/state'. If it suspend and resumes successfully, the problem is probably with one of the modules. Greetings, Rafael - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
