Hi, from dmesg: thinkpad_acpi: ThinkPad ACPI Extras v0.14 thinkpad_acpi: http://ibm-acpi.sf.net/ thinkpad_acpi: ThinkPad BIOS 7FETA0WW (2.18), EC 7FHT26WW-1.08 thinkpad_acpi: Lenovo ThinkPad Z61m thinkpad_acpi: radio switch found; radios are enabled input: ThinkPad Extra Buttons as /class/input/input11 brightness: keys work. procfs and sysfs are updated correctly. setting with procfs works. sysfs accepts 30, 40, 50, 60, 70, 80, 90, 100 only. All other values do not affect actual_brightness at all. I would expect that the next best setting is used. (e.g. brightness=46 -> actual_brightness=50) > The kernel ACPI video module reacts to the ACPI brightness change > events, and the new BIOSes apparently do produce those instead of > changing the brightness directly in firmware. So, the presence of > this module may be a key factor on brightness keys working, and I > need to know about this for sure. This is correct: with ACPI video module: - thinkpad_acpi hotkey events - video acpi events - brightness change without ACPI video module: - only thinkpad_acpi hotkey events volume: setting in procfs works and it is correctly updated when the keys are used. hotkey events: I get events for: <F1> - <F9>, <F11>, <F12>, Begin/End (brightness up/down), <space> (zoom) ThinkVantage No events for: volume up/down/mute <PgUp> (light) thermal: without experimental=1: temperatures: 49 51 38 60 50 128 36 128 with experimental=1: temperatures: 52 53 39 61 50 -128 36 -128 45 57 56 -128 -128 -128 -128 -128 Note that the unused elements are only -128 for experimental=1 as a result the corresponding files in sysfs return 128 instead of "No such device or address" which is imho wrong. Everything else seems to work as expected. michael
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