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Bug#635580: linux-image-2.6.39-2-amd64: lenovo ideapad v570 LCD brightness doesn't change



14.09.2011 4:52, maximilian attems пишет:
On Tue, Sep 13, 2011 at 03:43:11PM -0400, Dmitriy A. Istselemov wrote:
13.09.2011 5:01, maximilian attems пишет:
I have Lenovo V570 laptop. i have tried different kernels 2.6.38, 2.6.39
but on all of them I can't change the bightness of the screen.
How about newer 3.0 images? do they work?

thank you.

The 3.0 kernel doesn't change anything. Brightness still doesn't change.
In that case please test against experimental 3.1-rcX

thank you

It works with the last experimental kernel (3.1-rc4)!!! The brightness changes but there are still messages in dmesg:

geser@lenovo-v570:~$ dmesg | tail
[  126.811677] ACPI: Failed to switch the brightness
[  126.811706] ACPI: Failed to switch the brightness
[  127.010064] ACPI: Failed to switch the brightness
[  127.010083] ACPI: Failed to switch the brightness
[  127.208326] ACPI: Failed to switch the brightness
[  127.208349] ACPI: Failed to switch the brightness
[  127.421701] ACPI: Failed to switch the brightness
[  127.421729] ACPI: Failed to switch the brightness
[  127.637072] ACPI: Failed to switch the brightness
[  127.637101] ACPI: Failed to switch the brightness

--
С уважением,
Дмитрий Александрович Исцелемов

With best regards,
Dmitriy A. Istselemov




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