Bug 1409

Summary:	Some ACPI interrupts are missing after wake up from sleeping (S1)
Product:	ACPI	Reporter:	Luming Yu (luming.yu)
Component:	Power-Sleep-Wake	Assignee:	Robert Moore (Robert.Moore)
Status:	CLOSED PATCH_ALREADY_AVAILABLE
Severity:	normal	CC:	acpi-bugzilla, aripollak, hhielscher
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.0-test7,test8	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	a proposal patch for fixing this issue. Updated Patch for fixing error in using base_number in previous patch

Description Luming Yu 2003-10-23 04:30:12 UTC

Distribution:
RH 9 + base kernel 2.6.0-test7,test8

Hardware Environment:
IBM Thinkpad T21 without USB devices plugged in

Problem Description:
Some ACPI interrupts are missing after wake up from sleep S1.

Steps to reproduce:
a). boot up kernel with full ACPI features.
b). cat /proc/interrupts
....
11:      6        XT-PIC   acpi
....
c). press Fn+F4(or other function keys)
d). cat /proc/interrups
....
11:      8        XT-PIC   acpi
....
e). echo -n 1 > /proc/acpi/sleep
f). press power button, you can see the box wake up successfully.
g). repeat step b , c, d. You will find there is no acpi interrupt increments.

Comment 1 Luming Yu 2003-10-23 04:32:32 UTC

Created attachment 1139 [details]
a proposal patch for fixing this issue.

This patch fixs the issue on my T21

Comment 2 Luming Yu 2003-10-27 00:48:05 UTC

Created attachment 1208 [details]
Updated Patch for fixing error in using base_number in previous patch

Comment 3 Ari Pollak 2003-11-14 07:59:20 UTC

I get the same problem on my Thinkpad T41, but only after an S3 - putting the
machine into S1 doesn't seem to cause this. I'll try this patch later to see if
it fixes anything.

Comment 4 Ari Pollak 2003-11-15 20:32:24 UTC

Nope.. after applying this patch, no interrupts are generated in acpi after
coming back from an S3.

Comment 5 Karol Kozimor 2003-11-24 15:58:04 UTC

I'm quite sure I did actually inform you that the corrected patch fixes the S1
problem for me. In case I didn't, here it is: the updated patch works fine for me.

Comment 6 Brian Perkins 2003-12-07 20:59:42 UTC

Same symptoms on a Thinkpad R32 as the aforementioned T41, S3 causes no
interrupts to be generated.

S1 is not supported on the R32.

The improved patch doesn't work.

Comment 7 Luming Yu 2004-01-06 17:09:19 UTC

please try patch filed at bug 1661

Comment 8 Ari Pollak 2004-02-04 19:52:22 UTC

According to Len Brown, this bug should be tracking missing ACPI interrupts from
returning from S3 as well.

Comment 9 Karol Kozimor 2004-03-21 07:27:48 UTC

Please try the patch for bug #2321, which also fixes the issue for me.

Comment 10 Ari Pollak 2004-03-21 13:50:47 UTC

Re: comment #9, the patch in that bug did not help resuming from S3 on a
Thinkpad T41.

Comment 11 Karol Kozimor 2004-07-01 03:57:14 UTC

2.6.7-mm2 code fixes my issue.

Comment 12 Len Brown 2004-11-15 21:25:36 UTC

thanks for confirming interrupts work after 2.6.7-mm2 -- closing this bug.