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Message-ID: <1332215737.10557.291.camel@linux-s257.site> Date: Tue, 20 Mar 2012 11:55:37 +0800 From: joeyli <jlee@...e.com> To: Pradeep Subrahmanion <subrahmanion.pradeep@...il.com> Cc: Matthew Garrett <mjg@...hat.com>, rpurdie@...ys.net, FlorianSchandinat@....de, akpm@...ux-foundation.org, linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] Added backlight driver for Acer Aspire 4736 Hi Pradeep, 於 一，2012-03-19 於 17:03 +0530，Pradeep Subrahmanion 提到： > > For the maximum level causes blank screen... > > > > Please kindly help to identify which driver handle the brightness > > change, run the following 2 commands: > > > > # echo 5 > /sys/class/backlight/acer-wmi/brightness > > # echo 5 > /sys/class/backlight/intel_backlight/brightness > > > > Which one works to change brightness on your machine? > > Both of them do not work for me.Only hot keys are working. > > Writing to /sys/class/backlight/acer-wmi/brightness > > and /sys/class/backlight/intel_backlight/brightness do not cause any > > change in brightness. > > > Regards , > > Pradeep Subrahmanion A bit strange... Could you please paste your /proc/cmdline ? Did you add acpi_osi="Linux" ? Thanks a lot! Joey Lee -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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