Support for Lenovo ThinkPad SL500 (2746F2G). Is it possible?

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Hi devs,

I have Lenovo ThinkPad SL500 laptop (model 2746F2G). From ThinkWiki
and other resources
I learn that SL series is not real ThinkPad and has hybrid IdeaPad
firmware, so thinkpad_acpi
and tp_smapi modules don't work with it. Instead users should use
unofficial driver lenovo-sl-laptop [0].
But this project is dead now, and author don't reply to emails.

In 2009 in module asus-laptop was added limited support for SL series
[1], but it works only with
some SL models and miss many functions.

Few days ago I found this thread [2] in mailing list, seems
thinkpad_acpi now has experimental
SL series support. I tried to load thinkpad_acpi module on my laptop
and get next output in
/var/log/messages

thinkpad_acpi: ThinkPad ACPI Extras v0.24
thinkpad_acpi: http://ibm-acpi.sf.net/
thinkpad_acpi: ThinkPad BIOS 6AET58WW, EC unknown
thinkpad_acpi: Lenovo ThinkPad SL, model 2746F2G
thinkpad_acpi: detected a 8-level brightness capable ThinkPad

but module fails to load with "Error inserting thinkpad_acpi:
Input/output error".
I'm running Slackware 13.37 with default 2.6.37.6-smp kernel. Any chance to get
support for SL500 (2746F2G) in thinkpad_acpi? If necessary I can provide any
additional information (DSDT, DMI) and run tests.

[0] http://github.com/tetromino/lenovo-sl-laptop
[1] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=14f8af31
[2] http://sourceforge.net/mailarchive/message.php?msg_id=26842466

Thanks

P.S.: sorry for my bad English
-- 
Alexander Bruy

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