Bug 10222

Summary:	kernel 2.6.24 acpi_ec_wait timeout if ac adapter is plugged in - Sony Vaio VGN-C2Z
Product:	ACPI	Reporter:	10002000
Component:	EC	Assignee:	Alexey Starikovskiy (astarikovskiy)
Status:	CLOSED CODE_FIX
Severity:	high	CC:	acpi-bugzilla, bunk, findkb, gerhard.riener
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.24	Subsystem:
Regression:	Yes	Bisected commit-id:
Attachments:	acpidump output dmesg output 2.6.23.17 dmseg dump for kernel 2.6.24-24 acpidump of gerhard dmesg output 2.6.24.3 without quiet dmesg output 2.6.25-rc6 dmesg output 2.6.25-rc6 with ec.c DEBUG

Description 10002000 2008-03-11 06:09:30 UTC

Latest working kernel version: 2.6.23
Earliest failing kernel version: 2.6.24
Distribution: Arch current
Hardware Environment: Sony Vaio VGN C2Z
Software Environment:
Problem Description:
Since kernel 2.6.24 system locks on boot if ac adapter is plugged in. If no ac adapter is present system boots as usual. Using a kernel below 2.6.24, or booting with acpi=off fixes the problem.
 
 Uncompressing Linux... Ok, booting the kernel.
 ACPI: EC: acpi_ec_wait timeout, status = 0, expect_event = 1
 ACPI: EC: read timeout, command = 128

Steps to reproduce:
Boot a Sony Vaio VGN-C2Z with a kernel above 2.6.23 with plugged in ac adapter.

Comment 1 Zhang Rui 2008-03-11 22:57:47 UTC

Please attach the acpidump output. And dmesg output in 2.6.23.

Comment 2 10002000 2008-03-12 07:08:39 UTC

Created attachment 15224 [details]
acpidump output

Comment 3 10002000 2008-03-12 07:09:35 UTC

Created attachment 15225 [details]
dmesg output 2.6.23.17

Comment 4 gerhard 2008-03-22 03:20:32 UTC

I have the same problem with this kernel, however I can boot when I do not use the options quiet and splash

Comment 5 gerhard 2008-03-22 03:22:37 UTC

Created attachment 15390 [details]
dmseg dump for kernel 2.6.24-24

Comment 6 gerhard 2008-03-22 03:23:24 UTC

Created attachment 15391 [details]
acpidump of gerhard

Comment 7 Alexey Starikovskiy 2008-03-22 03:51:35 UTC

gerhard, could you try generic kernel from www.kernel.org, not the redhat one?

Comment 8 10002000 2008-03-22 09:58:35 UTC

Removing the quiet option from 2.6.24 works for me too. I also compiled kernel 2.6.25-rc6 and everything works fine here even with quiet. Seems the problem was related to EC GPE.

Booting the kernel.
ACPI: EC: GPE storm detected, disabling EC GPE
:: Loading Initramfs

Comment 9 10002000 2008-03-22 10:46:12 UTC

Created attachment 15399 [details]
dmesg output 2.6.24.3 without quiet

Comment 10 10002000 2008-03-22 10:46:46 UTC

Created attachment 15400 [details]
dmesg output 2.6.25-rc6

Comment 11 Alexey Starikovskiy 2008-03-22 14:12:45 UTC

Sebastian,
Please uncomment '#define DEBUG' at the beginning of /drivers/acpi/ec.c and send the dmesg here. You will not be able to get full dmesg, so part of it will do.

Comment 12 10002000 2008-03-22 19:34:37 UTC

No problem, i only need to know which kernel 2.6.23 24 or 25.

Comment 13 Alexey Starikovskiy 2008-03-22 23:34:43 UTC

25, please :)

Comment 14 10002000 2008-03-23 06:47:45 UTC

Created attachment 15409 [details]
dmesg output 2.6.25-rc6 with ec.c DEBUG

Comment 15 Alexey Starikovskiy 2008-03-23 09:35:24 UTC

Thanks, irq storm detection works.

Comment 16 ykzhao 2008-05-27 00:04:12 UTC

   The laptop can work after the irq storm patch is applied. And the commit is included in the current git tree. 
  > commit fa95ba04e6ba11d71e1b87becd054b38faf546c8
   > Author: Alexey Starikovskiy <astarikovskiy@suse.de>
> Date:   Fri Mar 21 19:36:02 2008 +0300
 > ACPI: EC: Detect irq storm
   
   The bug can be closed.