* Pavel Machek <[EMAIL PROTECTED]> [050201 13:50]: > Hi! > > > > I used your config advices from second mail, still it does not work as > > > expected: system gets "too sleepy". Like it takes a nap during boot > > > after "dyn-tick: Maximum ticks to skip limited to 1339", and key is > > > needed to make it continue boot. Then cursor stops blinking and > > > machine is hung at random intervals during use, key is enough to awake > > > it. > > > > Hmmm, that sounds like the local APIC does not wake up the PIT > > interrupt properly after sleep. Hitting the keys causes the timer > > interrupt to get called, and that explains why it keeps running. But > > the timer ticks are not happening as they should for some reason. > > This should not happen (tm)... > > :-). Any ideas how to debug it? Previous version of patch seemed to work > better...
I don't think it's HPET timer, or CONFIG_SMP. It also looks like your local APIC timer is working. If you have a serial console, you can put one letter printks in the code. Can you check if you ever get to smp_apic_timer_interrupt()? That's where you should get to after the sleep, and that calls the PIT timer interrupt to get it going again. I'm thinking that you'll get to smp_apic_timer_interrupt(), but once therebut function dyn_tick->interrupt(0, NULL, regs) never gets called. It's OK to put printks to the timer code here, there's tons of output only when the system is busy :) Also, can you post your .config again? And also please post output from: dmesg | grep -i "time\|tick\|apic" > > I've noticed that the only machine I have with ACPI C2/C3 support > > does not do anything in the C2/C3 loops, it just spins around and > > consumes more power than in C1 with hlt! > > > > That's because we currently don't have any code to enable the C2/C3 > > states in the southbridges on many Athlon boards. It's the same > > problem on my Crusoe laptop ALi 1533 chipset. > > I do not think we should need any chipset-specific code. ACPI > is expected to solve it... Can you ask on acpi-devel? Yeah, I've been meaning to, I just subscribed to it yesterday. Tony - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
