[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Mixed results -- VGA Passthrough with Intel 82Q35 IGD
Actually, the Dell is the one that works! The machine with the Intel BIOS doesn't work. I've tried using a VGA BIOS extracted from discrete graphics cards in the past. Can anyone point me to a tool for extracting the VBIOS from an Intel chip? Thanks, Jason On Tue, Apr 26, 2011 at 9:11 AM, chris <tknchris@xxxxxxxxx> wrote: > I would guess something relating to the fact that dell modifies the vga bios > if i remember. I think there is a way to extract that vga rom and supply it > when starting the vm. Someone here could probably shed a little more light, > I haven't done it myself I just recall seeing it on this list in the past. > > On Tue, Apr 26, 2011 at 9:50 AM, Jason Sonnek <jsonnek@xxxxxxxxx> wrote: >> >> I have two workstations with Intel 82Q35 Integrated Graphics. The >> first is a Dell Optiplex 755 (Intel Core 2 Duo, latest Dell BIOS); the >> second is a custom-built machine (Intel Core 2 Quad Q9550, Intel >> DQ35JO motherboard, latest Intel BIOS rev. 1143). VGA Passthrough to a >> Windows 7 guest works flawlessly on the former. Using the exact same >> Xen/Dom0/DomU configuration on the latter, the monitor flickers when >> the guest is started and then goes blank. The monitor remains powered >> on while the guest is running, suggesting it is receiving some sort of >> signal, but no pixels are ever illuminated. >> >> I'm running OpenSUSE 11.3 in Dom0, along with the Xen 4.0.0 package >> distributed by SuSE. I've also tried OpenSUSE 11.4 in Dom0 with the >> Xen 4.0.2 package; same result in both cases. VT-d is enabled on both >> machines, and PCI passthrough of other devices works correctly on both >> workstations. With the exception of the memory ranges assigned to the >> two IGD devices, the messages emitted in the QEMU and xend logs on >> both workstations are more or less identical. I've tried updating the >> BIOS to various revs on the non-working machine. Using 'iommu=verbose' >> on the Xen command-line, I don't see anything in the ring buffer that >> would suggest a problem. >> >> Any suggestions on how I could further debug this issue? Below I've >> included hwinfo for the two IGD devices. I'd be happy to attach other >> logs if they would help. >> >> Thanks! >> >> Jason >> >> >> Working 82Q35: >> >> 17: PCI 02.0: 0300 VGA compatible controller (VGA) >> [Created at pci.318] >> Unique ID: _Znp.D6lJTogQStC >> SysFS ID: /devices/pci0000:00/0000:00:02.0 >> SysFS BusID: 0000:00:02.0 >> Hardware Class: graphics card >> Model: "Dell OptiPlex 755" >> Vendor: pci 0x8086 "Intel Corporation" >> Device: pci 0x29b2 "Q35" >> SubVendor: pci 0x1028 "Dell" >> SubDevice: pci 0x0211 "OptiPlex 755" >> Revision: 0x02 >> Driver: "pciback" >> Driver Modules: "pciback", "pciback" >> Memory Range: 0xfea00000-0xfea7ffff (rw,non-prefetchable) >> I/O Ports: 0xec90-0xec97 (rw) >> Memory Range: 0xd0000000-0xdfffffff (ro,non-prefetchable) >> Memory Range: 0xfeb00000-0xfebfffff (rw,non-prefetchable) >> IRQ: 16 (30 events) >> I/O Ports: 0x3c0-0x3df (rw) >> Module Alias: "pci:v00008086d000029B2sv00001028sd00000211bc03sc00i00" >> Driver Info #0: >> XFree86 v4 Server Module: intel >> Driver Info #1: >> XFree86 v4 Server Module: intel >> 3D Support: yes >> Extensions: dri >> Config Status: cfg=new, avail=yes, need=no, active=unknown >> >> 18: PCI 02.1: 0380 Display controller >> [Created at pci.318] >> Unique ID: ruGf.kY6yMez4kU2 >> SysFS ID: /devices/pci0000:00/0000:00:02.1 >> SysFS BusID: 0000:00:02.1 >> Hardware Class: graphics card >> Model: "Dell OptiPlex 755" >> Vendor: pci 0x8086 "Intel Corporation" >> Device: pci 0x29b3 "82Q35 Express Integrated Graphics Controller" >> SubVendor: pci 0x1028 "Dell" >> SubDevice: pci 0x0211 "OptiPlex 755" >> Revision: 0x02 >> Driver: "pciback" >> Driver Modules: "pciback", "pciback" >> Memory Range: 0xfea80000-0xfeafffff (rw,non-prefetchable) >> Module Alias: "pci:v00008086d000029B3sv00001028sd00000211bc03sc80i00" >> Config Status: cfg=new, avail=yes, need=no, active=unknown >> >> >> >> Non-working 82Q35: >> >> >> 15: PCI 02.0: 0300 VGA compatible controller (VGA) >> [Created at pci.318] >> Unique ID: _Znp.9oGqrtGx1Y7 >> SysFS ID: /devices/pci0000:00/0000:00:02.0 >> SysFS BusID: 0000:00:02.0 >> Hardware Class: graphics card >> Model: "Intel Q35" >> Vendor: pci 0x8086 "Intel Corporation" >> Device: pci 0x29b2 "Q35" >> SubVendor: pci 0x8086 "Intel Corporation" >> SubDevice: pci 0x4f4a >> Revision: 0x02 >> Driver: "pciback" >> Driver Modules: "pciback", "pciback" >> Memory Range: 0xe0380000-0xe03fffff (rw,non-prefetchable,disabled) >> I/O Ports: 0x3458-0x345f (rw,disabled) >> Memory Range: 0xd0000000-0xdfffffff (ro,non-prefetchable,disabled) >> Memory Range: 0xe0200000-0xe02fffff (rw,non-prefetchable,disabled) >> IRQ: 16 (no events) >> I/O Ports: 0x3c0-0x3df (rw) >> Module Alias: "pci:v00008086d000029B2sv00008086sd00004F4Abc03sc00i00" >> Driver Info #0: >> XFree86 v4 Server Module: intel >> Driver Info #1: >> XFree86 v4 Server Module: intel >> 3D Support: yes >> Extensions: dri >> Config Status: cfg=new, avail=yes, need=no, active=unknown >> >> 16: PCI 02.1: 0380 Display controller >> [Created at pci.318] >> Unique ID: ruGf.gEeSljZbJ9D >> SysFS ID: /devices/pci0000:00/0000:00:02.1 >> SysFS BusID: 0000:00:02.1 >> Hardware Class: graphics card >> Model: "Intel 82Q35 Express Integrated Graphics Controller" >> Vendor: pci 0x8086 "Intel Corporation" >> Device: pci 0x29b3 "82Q35 Express Integrated Graphics Controller" >> SubVendor: pci 0x8086 "Intel Corporation" >> SubDevice: pci 0x4f4a >> Revision: 0x02 >> Driver: "pciback" >> Driver Modules: "pciback", "pciback" >> Memory Range: 0xe0300000-0xe037ffff (rw,non-prefetchable) >> Module Alias: "pci:v00008086d000029B3sv00008086sd00004F4Abc03sc80i00" >> Config Status: cfg=new, avail=yes, need=no, active=unknown >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel@xxxxxxxxxxxxxxxxxxx >> http://lists.xensource.com/xen-devel > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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