Bug#730489: it seems increasing the boot_delay parameter for some reason does not even get me the panic screenie.
Hi all,
I tried increasing the boot_delay parameter first at 3000 and going
beyond. What is happening that I don't get to the kernel panic screen
and get shown a blank screen. Have no idea why it's doing that.
This is some more info. I was able to garner from subsequent tries
with boots. I am not sharing the numbering as they are all different
but just attempting to get what happens so with people's help can get
a fuller picture or someway to do things better :-
One of the interesting comments seemed to be this :-
MTRR : Your CPU's had inconsistent MTRR settings
MTRR : probably your BIOS does not setup all CPU's
MTRR : Corrected Configuration
( I did observe the first statement in all the boots, but not sure
about the 2nd and 3rd statement. I did observe it on the last boot at
least and hence was able to record it.)
I did search the web and found this :-
https://www.kernel.org/doc/Documentation/x86/mtrr.txt
Doing it on another boot in rescue mode gives me this :-
$ cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
reg01: base=0x07f700000 ( 2039MB), size= 1MB, count=1: uncachable
reg02: base=0x07f800000 ( 2040MB), size= 8MB, count=1: uncachable
I have no idea whether the above observation is significant or not.
Further down the line I saw this :-
ACPI_OSC support notification failed, disabling PCIe ASPM
This probably is nothing as don't think I have PCIE bus.
then little further down I get 9 systems wakeups disabled
Then little after that I get :-
ACPI Exception = AE_Not_Found, while evaluating sleep state [\ _S1_]
(20130517/hwxface-571)
ACPI Exception = AE_Not_Found, while evaluating sleep state [\ _S2_]
(20130517/hwxface-571)
There are 2 sleep states and both have that exception. It had something like
ACPI : PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 *10 11 12 14 15)
ACPI : PCI Interrupt Link [LNKB] (IRQs 3 4 5 7 10 11 12 14 15) *0, disabled
ACPI : PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 10 *11 12 14 15)
ACPI : PCI Interrupt Link [LNKD] (IRQs *3 4 5 7 10 11 12 14 15)
ACPI : PCI Interrupt Link [LNKE] (IRQs 3 4 5 7 10 11 12 14 15) *0, disabled
ACPI : PCI Interrupt Link [LNKF] (IRQs 3 4 5 7 10 11 12 14 15) *0, disabled
ACPI : PCI Interrupt Link [LNKG] (IRQs 3 4 5 7 10 11 12 14 15) *0, disabled
ACPI : PCI Interrupt Link [LNKH] (IRQs 3 4 5 7 10 11 12 14 15)
some number was given LNKH but cannot remember.
If I understand write, it's just the kernel telling which IRQ is given
to which device (like mouse, keyboard etc.)
A little further down, I get this :-
vgaarb: device added PCI:0000:00:02.00 decodes = 10+ meme, Owns=
10+mem, locks=none
then little further down :-
ACPI : bus type PNP registered
another little further down :-
PNP : PNP ACPI ; Found 15 devices registered.
A few more lines and then no output anymore, staring a giant screen.
PNP : PNP ACPI
Non-plussed as to what to do next.
--
Regards,
Shirish Agarwal शिरीष अग्रवाल
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