Bug 9515

Summary:	Brightness button does not work anymore - Toshiba Satellite A100
Product:	ACPI	Reporter:	Aymeric "Wedge" Roynette (wedge.ant)
Component:	Other	Assignee:	Alexey Starikovskiy (astarikovskiy)
Status:	CLOSED PATCH_ALREADY_AVAILABLE
Severity:	normal	CC:	acpi-bugzilla, astarikovskiy
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.23.*	Subsystem:
Regression:	Yes	Bisected commit-id:
Attachments:	dmesg log from kernel 2.6.24-rc4

Description Aymeric "Wedge" Roynette 2007-12-07 03:41:41 UTC

Most recent kernel where this bug did not occur: 2.6.22.*
Distribution: Slackware -current
Hardware Environment: laptop, Toshiba Satellite A100

Problem Description: 
The brightness button (combo Fn+F6 and Fn+F7) does not work anymore since I upgraded to kernel (home made configuration) 2.6.23.* (lastest 2.6.23.9, vanilla).
No acpi log message when pushing the button ... (there was a message with 2.6.22)
As the 2.6.22 worked fine, I seeked in the acpi source and found that this was the file ec.c that didn't worked as it was supposed to.
Recompiled the 2.6.23 with the ec.c file from the 2.6.22 -> brightness button is back and working.

Thanks in advance

Comment 1 Andrew Morton 2007-12-07 03:56:55 UTC

I think Alexey worked on that..

Comment 2 Alexey Starikovskiy 2007-12-07 06:06:36 UTC

Could you please check if 24-rc4 is still broken?
Please post dmesg, acpidump outputs.

Comment 3 Aymeric "Wedge" Roynette 2007-12-09 23:26:33 UTC

Created attachment 13934 [details]
dmesg log from kernel 2.6.24-rc4

Comment 4 Aymeric "Wedge" Roynette 2007-12-09 23:27:24 UTC

(In reply to comment #2)

Hi !

> Could you please check if 24-rc4 is still broken?

24-rc4 works fine, brightness button is back and working, thank you !

> Please post dmesg, acpidump outputs.

dmesg has been added as attachment.

Comment 5 Alexey Starikovskiy 2007-12-10 01:08:58 UTC

Thanks for testing