On 五, 2012-06-15 at 05:39 +0900, Mattia Dongili wrote: > On Thu, Jun 14, 2012 at 07:33:05PM +0200, Karol Babioch wrote: > > Hi, > > > > I'm a user of the Sony VAIO VPCS12C5E and as such have always struggled > > with the Linux support of my laptop basically forever. Until now I've > > used the patch provided here [1], which worked quite well for some time. > > However since kernel version 3.3 I couldn't change the brightness of my > > screen anymore. > > This is not an issue with the platform driver but with the acpi video > driver. > so ACPI video driver is used before 3.3 and it works? please try this patch https://bugzilla.kernel.org/attachment.cgi?id=73576 and boot without acpi_backlight=vendor and see if it helps. thanks, rui > You can boot with acpi_backlight=vendor and get brightness control back > but the issue with acpi_video remains. > > ... > > So, I've uploaded a dmesg log when loading the module with the debug > > option enabled and trying to change the brightness with the fn keys here > > [2]. Maybe this is already enough to nail the issue down. Otherwise just > > let me know what you would like to have. > > please provide your laptop's DSDT table as well. > > > [1] https://code.google.com/p/vaio-f11-linux/wiki/KernelSupport > > [2] http://pastebin.com/GRrtp024 > > Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
