From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: Re: [Bugme-new] [Bug 13145] New: Processor does not go below C2 if mouse (uhci) is plugged in. Date: Wed, 22 Apr 2009 14:35:16 -0400 (EDT) Message-ID: References: <200904220022.18232.oliver@neukum.org> <20090421164910.43d94457@infradead.org> <200904221048.35180.oliver@neukum.org> <20090422091247.GA28309@sli10-desk.sh.intel.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Return-path: In-reply-to: <20090422091247.GA28309-U5EdaLXB8smDugQYiPIPGdh3ngVCH38I@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Shaohua Li Cc: Oliver Neukum , Arjan van de Ven , Andrew Morton , "Zhang, Rui" , "Zhao, Yakui" , "bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org" , "bugme-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org" , "linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "daniel.smoczyk-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org" , "imrehg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org" List-Id: linux-acpi@vger.kernel.org > IIRC, C2-popup is supported since core architecture. The system (a T41) > is unlikely support this. The T41 is an ICH4M, Pentium M system. C2 popup was not supported until ICH6M. Thus, when USB is active, this system should detect bus master activity (as displayed in /proc/acpi/processor/CPU/power) and should not enter C3 when such activity is (recently) present. Len Brown, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html