Bug 8909

Summary: hangs on boot
Product: ACPI Reporter: Alex Hunsaker (badalex)
Component: ECAssignee: Alexey Starikovskiy (astarikovskiy)
Severity: normal CC: acpi-bugzilla, pszczekutowicz
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.23-rc3 Subsystem:
Regression: --- Bisected commit-id:
Bug Depends on:    
Bug Blocks: 9056    
Attachments: acpidump
Make boot_ec fully operational
reworked patch to not break 8709 again

Description Alex Hunsaker 2007-08-19 19:25:19 UTC
Hangs on boot with:
ACPI: EC: GPE = 0x4, I/O: command/status = 0x66, data = 0x62
ACPI: Interpreter enabled
ACPI: (supports S0 S3)
ACPI: Using PIC for interrupt routing
ACIP: EC: GPE = 0x4, I/O: command/status = 0x66, data = 0x62

2.6.23-rc2 is ok
2.6.23-rc3 bad
2.6.23-rc3-latest (7c010de7506954e973abfab5c5999c5a97f7a73e) bad

git-bisect narrowed it down to:

ACPI: EC: Switch from boot_ec as soon as we find its desc in DSDT.
Alexey Starikovskiy [Fri, 3 Aug 2007 21:57:53 +0000 (17:57 -0400)]
Some ASUS laptops fail to use boot time EC
and need to eventually switch to one described in DSDT.


Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

Reverting the above commit fixes the problem.
Comment 1 Alex Hunsaker 2007-08-19 19:26:19 UTC
Created attachment 12447 [details]
Comment 2 Alex Hunsaker 2007-08-19 19:27:58 UTC
Created attachment 12448 [details]
Comment 3 Alex Hunsaker 2007-08-19 19:28:19 UTC
Created attachment 12449 [details]
Comment 4 Alex Hunsaker 2007-08-19 19:29:09 UTC
This is on an Averatec 3200 laptop...
Comment 5 Alex Hunsaker 2007-08-19 19:55:31 UTC
Created attachment 12450 [details]
Comment 6 Alexey Starikovskiy 2007-08-20 09:20:38 UTC
Created attachment 12460 [details]
Make boot_ec fully operational

Please check if the following patch helps
Comment 7 Alex Hunsaker 2007-08-20 18:48:05 UTC
Sure does, it boots again

Comment 8 Alexey Starikovskiy 2007-08-20 19:13:33 UTC
Thanks for testing!
Comment 9 Alexey Starikovskiy 2007-08-21 14:38:18 UTC
Created attachment 12477 [details]
reworked patch to not break 8709 again

Please test hopefully final version
Comment 10 Alex Hunsaker 2007-08-21 18:05:17 UTC
Still boots :)
Comment 11 Alexey Starikovskiy 2007-08-22 23:33:23 UTC
*** Bug 8919 has been marked as a duplicate of this bug. ***
Comment 12 Len Brown 2007-08-25 21:19:20 UTC
please confirm that this issue is not present in linux-2.6.23-rc3-git9
or later -- as the original patch to bug 8709 has been reverted from that release.
Comment 13 Alex Hunsaker 2007-08-25 23:45:52 UTC
-git9 (50c46637aa894f904e2fb39086a3d7732f68bd50) still boots
Comment 14 Len Brown 2007-09-05 16:58:14 UTC
Alex Hunsaker,
Thanks for verifying that this regression is gone before 2.6.23-rc4.
This bug is closed, but perhaps you can test the latest patch
in bug #8709 to help us make sure it doesn't come back?