Toby Cubitt <tsc25 <at> cantab.net> writes: > > Hi, > > I hope this is the right list to post this kind of question. > > I'm running a 2.6.23 kernel (with the tuxonice and Gentoo patchsets > applied) on a Toshiba Portege M400 tablet PC, and I have the legacy > /proc/acpi support built into the kernel (CONFIG_ACPI_PROCFS=y and > CONFIG_ACPI_PROC_EVENT=y), since acpid still depends on it for now. I > also have Toshiba ACPI support built into the kernel, in case that's > also relevant (CONFIG_ACPI_TOSHIBA=y). > > When I open or close the lid as on a normal laptop, > /proc/acpi/button/lid/LID/state is updated and acpi > "button/lid" events are generated in /proc/acpi/event, as expected. > However, when I rotate the screen into tablet mode, although the lid > state is updated to "closed", nothing is generated in /proc/acpi/event. > Then, when I lift the lid to rotate it back to normal laptop position, a > "button/lid" event _is_ generated in /proc/acpi/event, identical to > normal lid events (and the lid state is updated to "open"). > > So it seems as though acpi is correctly identifying closing the lid and > rotating the screen into tablet mode as two different types of events, > but isn't writing anything to /proc/acpi/event for the latter. On the > other hand, it is generating identical events for both opening the lid > and rotating the screen back to laptop mode. > > I guess the correct behaviour would be along the lines of what > apparently happens in Thinkpad tablets: opening and closing the lid > should generate "button/lid" events, and rotating the screen to and from > tablet mode should generate a different type of event. (Though if > the kernel just generated any event other than "button/lid" when the > screen was rotated to tablet mode, it would still be usable.) > > I'm happy to provide more information if it would be helpful, but I have > no experience at all in helping debug kernel code, so I'm not sure what > I should be telling you. > > Thanks for any help, > > Toby Hi, I am having exactly the same problem with a Toshiba Portege R400. Can anyone point me in the right direction for tackling this issue? Thanks, Tom -- 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
