From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Singapore Citizen Mr. Teo En Ming (Zhang Enming)" Subject: Re: Is my Intel HD Graphics 4600 Xen VGA Passthrough to Windows 8 Enterprise HVM domU Considered Successful? Date: Fri, 19 Jul 2013 18:56:24 +0800 Message-ID: <51E91B58.1000603@gmail.com> References: <51E9147B.6040900@gmail.com> <0ed0b02c1eead0180776fe9e87cba74f@mail.shatteredsilicon.net> Reply-To: singapore.mr.teo.en.ming@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <0ed0b02c1eead0180776fe9e87cba74f@mail.shatteredsilicon.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Gordan Bobic Cc: Ian Campbell , "Teo En Ming (Zhang Enming)" , xen-devel@lists.xen.org, xen-users@lists.xen.org, Casey DeLorme List-Id: xen-devel@lists.xenproject.org On 19/07/2013 18:42, Gordan Bobic wrote: > On Fri, 19 Jul 2013 18:27:07 +0800, "Singapore Citizen Mr. Teo En Ming > (Zhang Enming)" wrote: >> Hi, >> >> My Windows 8 Enterprise HVM domU configuration is as follows. I have >> to *disable* gfx_passthru, that is, gfx_passthru=0. Please take note. > > [...] > >> So is my Intel HD Graphics 4600 Xen VGA passthrough to Windows 8 >> Enterprise HVM domU considered successful? > > If it works, it's successful. > >> I cannot enable gfx_passthru, that is, gfx_passthru=1. If I enable >> gfx_passthru, Windows 8 Enterprise HVM domU would start for a few >> seconds, then the LCD monitor would go into power save mode (blank >> screen) *forever*. >> >> Please advise me on how I can get VGA passthrough to work with >> gfx_passthru=1. > > Can you elaborate why exactly do you need to have that GPU passed > through as primary? Primary GPU passthrough has always been > problematic because domU has to re-post the card's BIOS which > has always been problematic. > > The only difference in the general case is that with gfx_passthru=1 > you get to see the POST and boot information on the monitor > connected to the GPU. With gfx_passthry=0 you can only see this > in the VNC session connected to the virtual primary VGA card. In > the vast majority of cases seeing the POST and boot animation > isn't useful enough to be worth bothering with. > > I have a working setup with 2x Quadro cards, each passed through > as secondary (gfx_passthru=0) to different domUs, with separate > mice/keyboards passed through to each domU (multi-seat gaming > rig), and that works lovely (only limitation being 2GB of RAM > for each domU until I get around to upgrading to 4.3). > > Unless you have a very compelling reason to use gfx_passthru=1 > I suggest you don't bother even trying. > > Gordan > Dear Gordan, I want to use the monitor connected to Intel HD Graphics 4600 directly. I don't want to use a VNC session to connect to the Windows 8 Enterprise HVM domU. Thank you very much. -- Yours sincerely, Singapore Citizen Mr. Teo En Ming (Zhang Enming)