Re: no brightness with acpi video since 3.3 [was Re: Issues with the sony-platform module]

[Karol Babioch <karol@babioch.de>]

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Hi,

Am 16.06.2012 15:07, schrieb Mattia Dongili:
> how about the sony-laptop stuff with 3.1+patches?
> What is the output of
> $ grep . /sys/class/backlight/*/*
> $ grep . /sys/devices/platform/sony-laptop/*
> and the kernel log after these two commands

Here you go:

/sys/class/backlight/nv_backlight/actual_brightness:1073864551
/sys/class/backlight/nv_backlight/bl_power:0
/sys/class/backlight/nv_backlight/brightness:1073864551
/sys/class/backlight/nv_backlight/max_brightness:1025
/sys/class/backlight/nv_backlight/type:raw
/sys/class/backlight/sony/actual_brightness:-13
/sys/class/backlight/sony/bl_power:0
/sys/class/backlight/sony/brightness:-13
/sys/class/backlight/sony/max_brightness:242
/sys/class/backlight/sony/type:platform

/sys/devices/platform/sony-laptop/battery_care_health:0
/sys/devices/platform/sony-laptop/battery_care_limiter:0
/sys/devices/platform/sony-laptop/handles:0x0100 0x0101 0x0105 0x0103
0x0114 0x011d 0x0122 0x0126 0x0134 0x0135 0x0136 0x0137 0x013a 0x0000
0x0000 0x0000
/sys/devices/platform/sony-laptop/kbd_backlight:1
/sys/devices/platform/sony-laptop/kbd_backlight_timeout:0
/sys/devices/platform/sony-laptop/modalias:platform:sony-laptop
/sys/devices/platform/sony-laptop/thermal_control:balanced
/sys/devices/platform/sony-laptop/thermal_profiles:balanced silent
performance
/sys/devices/platform/sony-laptop/touchpad:1
/sys/devices/platform/sony-laptop/uevent:DRIVER=sony-laptop
/sys/devices/platform/sony-laptop/uevent:MODALIAS=platform:sony-laptop

[  296.031762] sony_laptop: found handle 0x0137 (offset: 0x0b)
[  296.146850] sony_laptop: __call_snc_method: [SN07:0x000000000000020b]
[  296.146852] sony_laptop: called SN07 with 0x020b (result: 0x0000)
[  304.972709] sony_laptop: found handle 0x0136 (offset: 0x0a)
[  304.973407] sony_laptop: __call_snc_method: [SN07:0x000000000000020a]
[  304.973412] sony_laptop: called SN07 with 0x020a (result: 0x0000)
[  304.973517] sony_laptop: found handle 0x0136 (offset: 0x0a)
[  304.974231] sony_laptop: __call_snc_method: [SN07:0x000000000000000a]
[  304.974235] sony_laptop: called SN07 with 0x000a (result: 0x0000)
[  304.974608] sony_laptop: found handle 0x0122 (offset: 0x06)
[  304.975082] sony_laptop: __call_snc_method: [SN07:0x0000000000000106]
[  304.975086] sony_laptop: called SN07 with 0x0106 (result: 0x0000)
[  304.975129] sony_laptop: found handle 0x0105 (offset: 0x02)
[  304.975681] sony_laptop: __call_snc_method: [SN07:0x0000000000000002]
[  304.975683] sony_laptop: called SN07 with 0x0002 (result: 0x0000)

> I'm trying to understand is if the patch series I sent works for
> you on the last working version of kernel (i.e. 3.1 apparently).
No, it doesn't work neither on 3.0 nor on 3.1. Interestingly the
original patch that definitely did work on 3.0 and 3.1. I'm not quite
sure what is the reason for this. I've basically compiled every kernel
version from 3.0 to 3.3 :(.

> it is actually. What did you have in the sony-laptop sysfs directories
> when booting with acpi_backlight=vendor?
Unfortunately I don't know and can't reproduce a working solution here
:(. Any clue why this could be?

Best regards,
Karol Babioch


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