[Bugme-new] [Bug 21032] New: System hangs on Boot on Intel ATOM (samsung n510 @nynet)
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Sat Oct 23 19:18:21 PDT 2010
https://bugzilla.kernel.org/show_bug.cgi?id=21032
Summary: System hangs on Boot on Intel ATOM (samsung n510
@nynet)
Product: Power Management
Version: 2.5
Kernel Version: 2.6.36
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: intel_idle
AssignedTo: power-management_intel_idle at kernel-bugs.osdl.org
ReportedBy: lkml at qb352.de
CC: lenb at kernel.org
Regression: Yes
i have a samsung n510 @nynet netbook
starting in the 2.6.35 development cycle
the system hangs occasionally, especially on boot
This bug is present in 2.6.36 and 2.6.35.7
pressing the powerbutton or a key on the keyboard makes the system continue
this bug is quite reliable reproduceable ..
i did a bisection and ended up on following commit:
2671717265ae6e720a9ba5f13fbec3a718983b65
booting the system with "intel_idle.max_cstate=0"
makes it not hang
The effects are strongest when intel_idle.max_cstate=2
Mr Brown gave me some Homework to do, here it comes:
failing .config .. attached
output from lspci .. hopefully can be attached
output from cat /proc/cpu .. hopefully can be attached
output from acpidump .. hopefully can be attached
output from dmidecode .. hopefully can be attached
for a 2.6.36 boot with intel_idle.max_cstate=0 (and acpi_idle boot)
output from grep . /sys/devices/system/cpu/cpuidle/*
output from grep . /sys/devices/system/cpu/cpu*/cpuidle/*/*
dmesg .. hopefully can be attached
try intel_idle.max_cstate=1, include dmesg
and increase the '1' until it fails
My guess is that 1 will work, but some higher number will start failing.
=> max_cstate=2 fails the strongest ... max_cstate=4 has not such a strong
effect
without any other bootparams, try "nolapic_timer"
=> yes, works .. does not hang .. see (hopefully) attached dmesg ending in
".nolapic"
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