於 四，2012-07-26 於 14:58 +0200，Luca Tettamanti 提到： > - again ACPI video module gets the nodification (in this case > ACPI_VIDEO_NOTIFY_PROBE), re-enumerated and send KEY_SWITCHVIDEOMODE > - KDE seems this and muck with the screen configuration :( > - meanwhile the brightness notification is propagated, the > hypothetical > radeon driver does its magic to adjust the screen. > > My first idea would be to make ACPI_VIDEO_NOTIFY_PROBE also call to > the > acpi notifier chain, and allow the handlers to veto the key press > (like > it's done for ACPI_VIDEO_NOTIFY_SWITCH). I welcome this approach! On some ATI machine's DSDT also issue ACPI_VIDEO_NOTIFY_PROBE when AC-power unplug, because BIOS want to nodify video driver do some power saving stuff. It causes KEY_SWITCHVIDEOMODE issued by acpi/video driver when AC-power unplug. At least acpi/video driver need to know this 0x81 event is filed by BIOS to radeon-acpi for notify but not do video mode switch. That means the radeon drm need take the video switch responsibility. Thanks a lot! Joey Lee -- 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
