From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gordan Bobic Subject: Re: =?utf-8?q?Is_my_Intel_HD_Graphics_4600_Xen_VGA_Passth?= =?utf-8?q?rough_to_Windows_8_Enterprise_HVM_domU_Considered_Successful=3F?= Date: Fri, 19 Jul 2013 13:12:07 +0100 Message-ID: <4bea5b0b00d6302c924bc91c89f287a9@mail.shatteredsilicon.net> References: <51E9147B.6040900@gmail.com> <0ed0b02c1eead0180776fe9e87cba74f@mail.shatteredsilicon.net> <51E91B58.1000603@gmail.com> <4df1f482ad445fa0c77e12f2daeda808@mail.shatteredsilicon.net> <51E91FDB.8050104@gmail.com> <915c4973ab968b5dee00e6c6d5603f8b@mail.shatteredsilicon.net> <51E924EC.4060408@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <51E924EC.4060408@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: singapore.mr.teo.en.ming@gmail.com Cc: xen-users@lists.xen.org, Casey DeLorme , Ian Campbell , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On Fri, 19 Jul 2013 19:37:16 +0800, "Singapore Citizen Mr. Teo En Ming (Zhang Enming)" wrote: >>>>>>> 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. >>>> >>>> You only need VNC for the POST. Once Windows boots up you should >>>> be >>>> be able to get all your display output on the physical screen. >>>> Disable the virtual VGA interface in device manager if you have >>>> to - I've found that is sometimes necessary to get the physical >>>> GPU working properly. >>>> >>>> Gordan >>>> >>> >>> Dear Gordan, >>> >>> How do I disable the virtual display adapter in Windows 8 >>> Enterprise >>> HVM domU? I see nothing on the physical screen at all. >> >> Have you tried going into your desktop/resolution settings and >> extending your desktop to the physical monitor? >> > How do I do that? What are the steps? Please elaborate. Please show > me any screenshots, if any. Sorry, that's a Windows question and that is outside of my area of expertise. Gordan