Hi Benoit, thanks for the quick reply and help. Sorry forgot to mention that, yes I am using the Nvidia driver. You are right, after suspend it does work. Got this message after suspend, "apple-gmux 00:07: System wakeup disabled by ACPI" >> If this is the case, this explain your issue probably. NVIDIA driver >> seems disable gmux chips. Also right:), if I shutdown and power up, the apple-gmux reports device not present. But if I do a reboot then it shows up. We will have to wait for a nvidia patch (while using the proprietary driver), right? Thanks again, Rolando On Thu, Jan 24, 2013 at 3:16 AM, Benoit Gschwind <gschwind@xxxxxxxxxxx> wrote: > Hello Rolando, > > I found that if you turn you computer in stanby (suspend to RAM) and turn it > on again, gmux work again. > > I didn't found a way ot enable this behaviour at boot. > > Best regards > > Le 24/01/2013 09:13, Benoit Gschwind a écrit : > >> Hello Rolando, >> >> Do you use NVIDIA proprietary driver ? >> >> If this is the case, this explain your issue probably. NVIDIA driver >> seems disable gmux chips. >> >> Best regards. >> >> Le 24/01/2013 06:25, Rolando Martins wrote : >>> >>> Hi, >>> I am currently experienced problems with the apple_gmux driver >>> while using a MBP retina 10,1. >>> System description & behavior: >>> -Ubuntu 13.04 with kernel 3.8-rc4. >>> -dmesg: apple_gmux: Found gmux version 3.2.19 [indexed] >>> -Under /sys/class/backlight I only have gmux_backlight. >>> -Under gmux_backlight both actual and max brightness are equal to 2^24 >>> = 16777216, >>> while brightness value is within [0,1023] (the value can be changed) >>> -The backlight is dimmed throughout the boot process and remains the >>> same, >>> without being possible to adjust it. >>> >>> If the following hack is applied then full brightness can be achieved, >>> however it remains nonadjustable. >>> >>> #define HACK_VALUE 1023 >>> ... >>> In gmux_probe() : >>> ... >>> props.max_brightness = gmux_read32(gmux_data, >>> GMUX_PORT_MAX_BRIGHTNESS); >>> //hack >>> props.max_brightness = HACK_VALUE; >>> .... >>> bdev->props.brightness = gmux_get_brightness(bdev); >>> //hack >>> bdev->props.brightness = HACK_VALUE; >>> >>> Does anybody have a clue to solve this problem? >>> >>> Thanks for the help, >>> Rolando >>> -- >>> To unsubscribe from this list: send the line "unsubscribe >>> platform-driver-x86" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe >> platform-driver-x86" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
