Date: Sat, 06 Jul 2013 20:59:51 +0200 From: Matthias Petermann <matthias@d2ux.net> To: freebsd-current@freebsd.org Subject: ACPI Lenovo X121e (Model 3045-79G, i3, HD3000) Suspend and LCD Brightness Message-ID: <51D86927.5090907@d2ux.net>
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Hello,
on a Lenovo X121e (Model 3045-79G, i3, HD3000) I try FreeBSD since 9.1.
Wifi, LAN, Audio, USB peripherials and Video (with KMS patch) just
working fine. Anyway, there are some open items:
* LCD brightness control doesn't work
* Suspend to RAM (S3) doesn't restore video after resume
That's why I upgraded my system to 10.0-CURRENT and looked in more
detail at it:
root@thinkpad:/usr/home/mpeterma # uname -a
FreeBSD thinkpad.local 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r252853:
Sat Jul 6 02:01:48 CEST 2013
root@thinkpad.local:/usr/obj/usr/src/sys/GENERIC amd64
# LCD Brightness
First, on LCD brightness: The X121e is expected to increase/decrease LCD
brightness by Fn+F9/Fn+F8. This is not working right now. So I tried
the following:
## Attempts
### acpi_video / sysctl hw.acpi.video.lcd0.brightness
This is what is working on most of the other laptops I tried it.
root@thinkpad:/usr/home/mpeterma # kldload acpi_video
acpi_video0: <ACPI video extension> on vgapci0
root@thinkpad:/usr/home/mpeterma # sysctl -a |grep bright
hw.acpi.video.lcd0.brightness: 35
root@thinkpad:/usr/home/mpeterma # sysctl
hw.acpi.video.lcd0.brightness=100
hw.acpi.video.lcd0.brightness: 35 -> 100
Result: LCD brightness doesn't change after sysctl call, Fn+F9/Fn+F8 not
working.
### acpi_ibm / sysctl dev.acpi_ibm.0.lcd_brightness
This is what worked on some older Thinkpads.
root@thinkpad:/usr/home/mpeterma # kldload acpi_ibm
acpi_ibm0: <IBM ThinkPad ACPI Extras> on acpi0
root@thinkpad:/usr/home/mpeterma # sysctl -a | grep bright
hw.acpi.video.lcd0.brightness: 90
dev.acpi_ibm.0.lcd_brightness: 7
root@thinkpad:/usr/home/mpeterma #
root@thinkpad:/usr/home/mpeterma # sysctl dev.acpi_ibm.0.lcd_brightness=1
dev.acpi_ibm.0.lcd_brightness: 7 -> 1
Result: LCD brightness doesn't change after sysctl, Fn+F9/Fn+F8 still
not working.
### Activate sysctl dev.acpi_ibm.0.events
root@thinkpad:/usr/home/mpeterma # sysctl -a | grep
dev.acpi_ibm.0.availmask
dev.acpi_ibm.0.availmask: 67733756
root@thinkpad:/usr/home/mpeterma # sysctl dev.acpi_ibm.0.events=1
dev.acpi_ibm.0.events: 0 -> 1
root@thinkpad:/usr/home/mpeterma # sysctl
dev.acpi_ibm.0.handlerevents='0x03 0x04 0x10 0x11'
Result: Fn+F9/Fn+F8 still not working.
### Direct ACPI calls with acpi_call
root@thinkpad:/usr/home/mpeterma # cd /usr/ports/sysutils/acpi_call/
root@thinkpad:/usr/ports/sysutils/acpi_call # make install clean
root@thinkpad:/usr/ports/sysutils/acpi_call # kldload acpi_call
root@thinkpad:/usr/ports/sysutils/acpi_call # acpi_call -p '\VBRU'
root@thinkpad:/usr/ports/sysutils/acpi_call # acpi_call -p '\VBRD'
Result: on each acpi_call, \VBRU increases and \VBRD decreases LCD
brightness by one step.
Fn+F9/Fn+F8 still not working.
## Summary
Direct ACPI calls are sufficient as workaround. I would like to support
a real solution. What are the next steps to find out what is wrong here?
I think a solution for this problem will help not just X121e users but
any user of more recent thinkpads. I saw similiar postings for X230 and
X220.
# Suspend to RAM
The following observations I made without the i915 KMS module loaded (in
console mode).
## Attempts
### Supported Sleep states as reported by sysctl
root@thinkpad:/usr/home/mpeterma # sysctl -a |grep supported
hw.acpi.supported_sleep_state: S3 S4 S5
### S3, hw.acpi.reset_video=0
root@thinkpad:/usr/home/mpeterma # sysctl hw.acpi.reset_video=0
hw.acpi.reset_video: 0 -> 0
root@thinkpad:/usr/home/mpeterma # acpiconf -s 3
Result: System suspends, no video after resume, black screen
### S3, hw.acpi.reset_video=1
root@thinkpad:/usr/home/mpeterma # sysctl hw.acpi.reset_video=1
hw.acpi.reset_video: 0 -> 1
root@thinkpad:/usr/home/mpeterma # acpiconf -s 3
Result: system reboots immediately
## Adding more debug output
In ACPI Debugging guide it is recommended to recompile the ACPI module
with additional debug mode.
Anyway, when I try so, I get a warning:
root@thinkpad:/home/mpeterma # cd /sys/modules/acpi/acpi
root@thinkpad:/sys/modules/acpi/acpi # make clean
make: "/usr/src/sys/modules/acpi/acpi/Makefile" line 4: "The ACPI
module is deprecated, set FORCE_BUILD to force it"
root@thinkpad:/sys/modules/acpi/acpi #
Is this still the way to go, or doesn't the guide reflect the state of
FreeBSD 10?
# Detail information to X121e
I uploaded the following details regarding the X121e:
* dmesg
* ACPI ASL
* Sysctl ACPI keys
to:
*https://d2ux.org/owncloud/public.php?service=files&t=7022f90cea5e48da7fa65806c0d66091*
Any help is welcome. Please let me know when I can provide more details
/ testing.
Kind regards,
Matthias
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