https://bugzilla.kernel.org/show_bug.cgi?id=44911
Summary: Fan control and FN keys don't work on Toshiba
Satellite L300D
Product: ACPI
Version: 2.5
Kernel Version: 3.4.4
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Fan
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Created an attachment (id=75691)
--> (https://bugzilla.kernel.org/attachment.cgi?id=75691)
dmesg
Fan control and FN keys don't work on Toshiba Satellite L300D
Problem description:
Laptop starts with disabled fan. On high temperature it switches on and
stays at full speed until reboot. FN-FX keys also don't work(i.e. don't trigger
any ACPI event).
Steps to Reproduce:
Start notebook
Expected Results:
Fan gradually responses to temperature changes.
Build Date & Hardware:
Linux 3.4.4-gentoo #4 SMP Fri Jul 6 12:02:40 MSK 2012 x86_64 AMD Athlon(tm)
64 X2 Dual-Core Processor TK-57 AuthenticAMD GNU/Linux
Possible solution: I've been using omnibook
module(http://sourceforge.net/projects/omnibook/) with ectype 14 to solve this
problem, but now it seems that it's development is dead. So I read sources and
found that omnibook just reading backlight state:
ec_read(TOS_BNDT, &data) //#define TOS_BNDT 0xA3
it somehow makes my fan working along with fn-fx keys. I scetched a small
module that does the same and its helped. I've also played with different
addresses(0x00 - 0xA3), so it seems that it doesn't matter what addr to choose.
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