Nate Lawson wrote:
On Wed, 17 Sep 2003, Andrew Thompson wrote:
It has helped and the laptop is able to suspend with the serial cable attached (further than before). It now panics on the first resume with the following (gdb output at bottom).
You should do a quick grep through sys/dev/syscons for "= sc->cur_scp->index" and replace them all with the above NULL check. I'm interested if this will fix things.
Hi,
I fixed the other null derefernce in sc_bell() and the laptop is now suspending with the serial console the same as without.
Hi again, again,
I am a keen newbie kernel debugger but here is as far as I have got :) The first suspend it goes through the functions:
acpi_SetSleepState() -> AcpiEnterSleepStatePrep() -> acpi_sleep_machdep() -> AcpiEnterSleepState()
as it should, but the second suspend it only does acpi_SetSleepState() -> AcpiEnterSleepStatePrep() and then the laptop suspends itself. I am unsure why it is not getting as far the second time...
db> b acpi_SetSleepState db> b AcpiEnterSleepStatePrep db> b acpi_sleep_machdep db> b AcpiEnterSleepState db> c
<suspend #1> Breakpoint at acpi_SetSleepState: pushl %ebp db> c Breakpoint at AcpiEnterSleepStatePrep: pushl %ebp db> c Breakpoint at acpi_sleep_machdep: pushl %ebp db> c ======== acpi_printcpu() debug dump ======== gdt[0077:c04b94c0] idt[0407:c04b9860] ldt[0028] tr[0020] efl[00000096] eax[00001000] ebx[c1234d00] ecx[00000000] edx[bfc00004] esi[00000000] edi[c09f54b0] ebp[c62f3aa8] esp[c62f3a70] cr0[8005003b] cr2[280b0b40] cr3[01f8c000] cr4[00000091] cs[0008] ds[0010] es[0010] fs[0018] gs[002f] ss[0010] Breakpoint at AcpiEnterSleepState: pushl %ebp db> c <laptop suspends, resumes correctly>
<suspend #2> Breakpoint at acpi_SetSleepState: pushl %ebp db> c Breakpoint at AcpiEnterSleepStatePrep: pushl %ebp db> c <laptop suspends here, reboots on resume>
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