Hi, On Tue, Dec 6, 2011 at 23:31, Baptiste Jonglez <baptiste@xxxxxxxxxxx> wrote: > On Tue, Dec 06, 2011 at 11:12:26PM +0100, Benjamin Tissoires wrote: >> Hi Baptiste, > > Hi, > >> On Tue, Dec 6, 2011 at 22:51, Baptiste Jonglez <baptiste@xxxxxxxxxxx> wrote: >> > The second screen works fine with the attached patch. It actually is >> > 6 months old but seems to have been lost in the wild... >> >> You don't have the problem of the second backlight still off? >> On our Iconia, we need to trigger a special DMI command to set it up >> (SDSS, IIRC). > > No, with the patch, it worked out-of-the-box. mmm, this is weird. We must not have the same bios or device version. We need to explicitly set the LCD2 up. > > I can even control the brightness in > `/sys/class/backlight/acpi_video0/brightness' (it affects both > displays at the same time though). But even at 0, it's still perfectly > readable. Yes, the acpi can control both brightness. But WMI can control each brightness. However, we are not sure this is what people want. So we do not plan to introduce a second brightness control. > > Maybe this a bug that got fixed recently? I've actually tried the 3.1 > kernel (and then the 3.2-rc4) because I noticed a lot of commits and > improvements in the i915 driver recently. We doubled-checked on 3.2-rc4, and we still need our patch. This is definitively a bios/hardware configuration problem. Cheers, Benjamin > >> > Thanks Benjamin! >> >> All the credits are from Ajax and somebody else on IRC I don't recall, >> really sorry. Thanks to them. >> >> Cheers, >> Benjamin. > > Regards, > Baptiste -- 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
