From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: VT-d and x2apic: broken resume after suspend to ram Date: Fri, 1 Nov 2013 17:02:06 +0100 Message-ID: <20131101160206.GM17455@8bytes.org> References: <20131101130702.GA3348@8bytes.org> <20131101142115.GK17455@8bytes.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Peter Senna Tschudin Cc: x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , Seiji Aguchi List-Id: iommu@lists.linux-foundation.org On Fri, Nov 01, 2013 at 04:47:47PM +0100, Peter Senna Tschudin wrote: > Only serial ports over USB: > usb 2-1.3.2: pl2303 converter now attached to ttyUSB0 > > The issue with no_console_suspend is that the monitor is powered off > on suspend and never resume after that. The external monitor enters in > power save mode during suspend and also never resume. Do you know if > replacing my wifi/bt card by this: > > http://www.startech.com/Cards-Adapters/Serial-Cards-Adapters/2-Port-RS232-Mini-PCI-Express-Serial-Card-16950-UART~MPEX2S952 > > would enable to use the serial console for seeing kernel debug messages? Who knows, depends on the BIOS in your machine, I guess. But I would say there is a at least a better chance with this than with a USB-Serial adapter. Joerg