On Thu, Jul 10, 2008 at 01:36:04PM +0200, Thomas Renninger wrote: > On Thursday 10 July 2008 13:19:00 Matthew Garrett wrote: > > No, I said that on Thinkpads with a PWM method, the PWM method has to be > > called in order to avoid the delay. There's no need for a blacklist. > > Ok. > I just got a report that Dells must not use the video driver: > https://bugzilla.novell.com/show_bug.cgi?id=404627 > > They have a really ugly dcdbas driver which issues SMIs triggered from > userspace. If the ACPI video driver has bound, then using the dcdbas mechanism for backlight control is incorrect. I wasn't aware that any Dells actually implemented that. The correct thing is for userspace to stop using dcdbas if a real backlight control is available, not to cripple the ACPI video driver. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- 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
