https://bugzilla.kernel.org/show_bug.cgi?id=47841
Summary: Backlight hotkeys do not trigger X events on Asus X53S
laptop
Product: ACPI
Version: 2.5
Kernel Version: 3.5.4
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ACPICA-Core
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Created an attachment (id=80781)
--> (https://bugzilla.kernel.org/attachment.cgi?id=80781)
Extracted dsdt and ssdt's
I have an issue with the backlight controls on my Asus X53S laptop. I can
change the brightness with the Fn-keys and I can also change the brightness
with the controls in KDE4. However, when changing the brightness with the
Fn-keys, no event is triggered in KDE/X and hence the brightness slider doesn't
get adjusted.
I tried monitoring events with xev, but nothing is triggered when I press the
Fn-brightness keys (F5 and F6). Some other Fn-keys do trigger events in xev:
Fn+F8, Fn+Delete and Fn+NumLock.
This is possibly related to the asus-laptop.ko module not working on my laptop.
When I try to load the module I get the following error:
Error: could not insert module
/lib/modules/3.5.4/kernel/drivers/platform/x86/asus-laptop.ko: Unknown symbol
in module
And the following gets logged in the kernel logfile:
Sep 23 14:30:24 mephisto kernel: [ 3553.002843] asus_laptop: Unknown symbol
sparse_keymap_free (err 0)
Sep 23 14:30:24 mephisto kernel: [ 3553.002858] asus_laptop: Unknown symbol
input_allocate_polled_device (err 0)
Sep 23 14:30:24 mephisto kernel: [ 3553.002862] asus_laptop: Unknown symbol
input_free_polled_device (err 0)
Sep 23 14:30:24 mephisto kernel: [ 3553.002872] asus_laptop: Unknown symbol
sparse_keymap_report_event (err 0)
Sep 23 14:30:24 mephisto kernel: [ 3553.002875] asus_laptop: Unknown symbol
sparse_keymap_setup (err 0)
Sep 23 14:30:24 mephisto kernel: [ 3553.002883] asus_laptop: Unknown symbol
input_register_polled_device (err 0)
Sep 23 14:30:24 mephisto kernel: [ 3553.002889] asus_laptop: Unknown symbol
input_unregister_polled_device (err 0)
System specifications:
Asus laptop X53S, motherboard version K53SM.
Intel Core i7 2670QM
Optimus hybrid graphics, nVidia GeForce GT 630M and Intel Sandybridge graphics
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