On 23.08.2013 17:58, Bjorn Helgaas wrote:
[+cc linux-pci, linux-acpi, switch to email for now]
On Fri, Aug 23, 2013 at 7:34 AM, <bugzilla-daemon@xxxxxxxxxxxxxxxxxxx> wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=57961
...
I'm arriving here from googling "_handle_hotplug_event_root Bus check notify on
\_SB_.PCI0".
Huh, interesting. I didn't think the kernel bugzilla was visible to
search engines (I wish it were). But maybe Google just found an email
that mentioned the URL?
Yes, I actually got there through LKML http://lkml.org/lkml/2013/5/10/432
My Dell L421X is spitting this notification both when I close and open the
laptop lid, one each. No ACPI LID event is emitted, which doesn't seem right.
Can you post a complete dmesg log including a lid close/event cycle?
E-mailed that to you personally.
Running on 3.10.6. Is this bug related in any way?
Bug 57961 is for ExpressCard changes that we didn't handle correctly.
It doesn't sound like you're adding or removing an ExpressCard, so
you're likely seeing a different problem.
Is the problem that (1) you see "_handle_hotplug_event_root Bus check
notify on \_SB_.PCI0" messages that you don't expect, and (2) you do
not see LID events, which you do expect?
Is there anything that is not actually working correctly, or is it
just messages that don't seem right?
Mailing list thread discussed some apparently significant ACPI changes
in 3.10. I've yet to have a laptop that didn't emit an ACPI LID event.
Instead the kernel does emit something that looks like something is not
quite what it should be. I'm wondering if I have missed something in
kernel configuration or am I somehow affected by the recent ACPI changes
or a machine specific bug somewhere. Dells are among the
Linux-friendliest machines throughout history, that makes me think it
could be the kernel.
You're right, I'm not on the acpiphp bus for sure, but sometimes things
are related at a level above so I took a shot at trying to find out
what's happening.
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