[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Is there any ATI card, which works with VGA Passthrough and allows rebooting guest?
On 2014-01-21 17:14, Adam Ryczkowski wrote: On 21.01.2014 17:40, Gordan Bobic wrote:On 2014-01-21 16:23, Adam Ryczkowski wrote:I'm planning to build a system that allows gaming on domU with VGA-passthrough. Are there any graphics cards besides few expensive NVidia Quadro models, that are fully compatible with Xen VGA-passthrough, including rebooting the virtual guest? I'd very much prefer to use ATI family then NVidia, with price <= $500.Depends on the performance level you required. IIRC I had marginally better luck with the HD6450/7450 card than higher spec ones, presumably because it doesn't take auxiliary power so putting it to sleep by removing PCIe power works on it.Dear Gordan, thank you very much for an answer. Do you mean, that you are actually able to reboot the guest as many times, as you want, without any issues? I only tried a couple of times, I was never going to use that card longer term, so it could have just been luck. But having said that I have _never_ managed to reboot the same VM with a 7970 card without issues. If you want to go faster and aren't afraid of a little bit of soldering, get a non-Gainward GTX680 and remove one resistor to make it into half of a Tesla K10, which also works well for VGA passthrough purposes (yes, I also use those).Do you have, by any chance, a link to the photograph describing which resistor to remove? As I understand, the "solution" depends on the motherboard manufacturer... You need to remove resistor 3 as per the photos attached to this post on EEVBLOG: http://www.eevblog.com/forum/chat/hacking-nvidia-cards-into-their-professional-counterparts/msg207550/#msg207550 That will turn it into a Tesla K10. Note that my experience shows that Gainward cards (both my Gainward 680 Phantom and Gainward 690) have issues when modified - they work fine on bare metal but when passed through to a VM they seem unable to output dual-link DVI modes, or anything over DisplayPorts. My MSI GTX680, OTOH, works just fine. While there may be non-reference 680 cards that are different, I have not seen any. I've found tons of these on several forums, but they were about modifying GTX 690 into Tesla K10, not GTX 680. Read the eevblog forum thread I linked above end to end (yes, I know there are 60 pages), all of the available knowledge on Nvidia modding that I am aware of is either there or linked to from there. I also made an attempt to start moving the info to a wiki on wikia, so by all means, if you get it working, please put the info on the exact mod you did on gpumod.wikia.com. Besides, many are poorly explained, and I didn't make out precisely if the modification really worked. Read the eevblog thread. :) BTW Why non-Gainwart? See above - I have experienced odd issues such as being limited to only SL-DVI modes in a VM (but not on bare metal) when using Gainward cards, so best to avoid them. Gordan _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxx http://lists.xen.org/xen-users
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |