http://bugzilla.kernel.org/show_bug.cgi?id=12021
Summary: no brightness if ACPI enabled - Samsung NC10
Product: ACPI
Version: 2.5
KernelVersion: 2.6.27-8-generic
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Latest working kernel version: don't know i have the netbook since 1 week
Earliest failing kernel version: 2.6.27-8-generic
Distribution: Ubuntu 8.10
Hardware Environment:
Samsung NC10 netbook
lspci :
00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller
Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express
Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML
Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition
Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1
(rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3
(rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI
Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge
(rev 02)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE
Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
02:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg
Wireless PCI Express Adapter (rev 01)
03:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8040 PCI-E Fast
Ethernet Controller (rev 13)
Software Environment:
Problem Description:
On this laptop some function keys are BIOS-controlled (they work before Linux
boots).
As soon as Linux boots they stop working. Trying some boot options I've found
that "acpi=off" makes them work
after checking dmesg and /usr/include/linux/input.h i fixed them with
setkeycodes e008 225
setkeycodes e009 224
BUT, in graphical mode it makes the keyboard freeze (i need to switch to CRTL +
ALT + F1 and then CTRL + ALT +F7 to make it unfreeze)
AND it brings down the brightness at 0%
or brings up the brithness at 100%
it did not stop, even if i'm no more pressing the key
because it is a netbook i can't loose acpi (i can't see the batterie status)
and the processor is at 100% speed not very good to spare batterie life
I killed acpid and try a "cat /proc/acpi/event" but it didn't show anything
after pressing the brightness button
the directory /sys/class/backlight is empty
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