Hi Baptiste, On Tue, Dec 6, 2011 at 22:51, Baptiste Jonglez <baptiste@xxxxxxxxxxx> wrote: > On Mon, Dec 05, 2011 at 11:00:41AM +0800, joeyli wrote: >> Add Cc. to platform-driver-x86 and linux-acpi >> >> Hi Baptiste >> >> 於 日，2011-12-04 於 17:07 +0100，Baptiste Jonglez 提到： >> > Hi, >> > >> > I've got a lot of troubles with a dual-LVDS Acer laptop (it doesn't >> > have a keyboard, but two displays with touchscreens) >> > >> > The Intel GPU is integrated into the Core i5-480M CPU: it's a bit >> > older than Sandybridge, as it seems to be based on the Arrandale >> > micro-architecture. >> > >> > In the BIOS, both displays work fine; but as soon as the kernel boots >> > up, the second display (i.e. the one where you usually find a >> > keyboard) is turned off. The main display works as expected. >> > >> > xrandr reports two LVDS displays: LVDS1, which is connected, and >> > LVDS2, which is marked as "disconnected". No matter what I tried, I >> > can't bring that second display up. >> > >> > During the boot, just after the drm is set up, the following message >> > shows up: >> > >> > [drm:intel_dsm_pci_probe] *ERROR* failed to get supported _DSM functions >> > >> > (attached is the relevant part of dmesg [1]) > > 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). > > Thanks Benjamin! All the credits are from Ajax and somebody else on IRC I don't recall, really sorry. Thanks to them. Cheers, Benjamin. > > There is still the issue of unhandled acer-wmi events, but it's far > less incapacitating. I wonder what's the best way to report events to > userspace, though (e.g. for the "keyboard" button, userspace might > want to know when it is pressed in order to display a virtual keyboard > or any other fancy stuff) > > Joey, if you need more logs for acer-wmi, I'll be happy to provide. > > > 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
