Re: [Xen-devel] VGA passthrough with Drivers does not work

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Jul 22, 2010 at 06:10:10PM +0800, "?????????(Tang-Hsun Tu)" wrote:
> Hi,
>
>           In recent days, I try to passthrough VGA to a HVM windows XP  
> domain on my notebook.
> There are two VGAs on the notebook, one is intel IGD (primary) and the  
> other is nvidia (secondary).
>
> At first, the screen will be blank/black when I start a HVM with a  
> passed VGA (primary one).
> After I connect a external monitor and disable GDM,
> the screen (external monitor) will start to display the WinXP logo
> (it seems that the passthrouh is successful),
> and it is only 16-bit color in display when enters into WinXP
> (it means it does not have any VGA driver).
> The original screen (on notebook) still is black.
>
> However,
> when I reboot the machine after installing the VGA driver,
> the screen has become black.
> I also try to install driver without passthrough before,
> then change the setting to the passthrought,
> but it still goes to black screen.
> How can I solve this problem?
>

Are there any relevant errors in /var/log/xen/* ?
how about "xm dmesg" or "xm log" ?

-- Pasi

> By the way, I aslo have some questions.
> 1. Why a external monitor can display but the original (notebook screen)  
> does not?
> 2. In WinXP, I can see the bochs BIOS message when I start the HVM.
>     However, in Windows7, I only see a disordered screen until enters  
> into Winows7.
> 3. If the dom0 use printk (dmesg), the screen will not be align.
>     It just like print a message then the screen moves up.
>
> Thanks!
>
> Best Regards,
> Tang-Hsun Tu
>
> Enivronment:
> Host OS: Ubuntu 10.04 LTS
> Dom0: 2.6.31.13
> Xen: xen-4.0-testing.hg, xen-4.0.1-rc4
> HVM: windows XP and windows 7
> CPU: Intel(R) Core(TM) i5 CPU M 540
> VGA: Intel Corporation Core Processor Integrated Graphics Controller
>           nVidia Corporation Device 0a29
>
>
> lspci:
> 00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller  
> (rev 02)
> 00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16  
> Root Port (rev 02)
> 00:02.0 VGA compatible controller: Intel Corporation Core Processor  
> Integrated Graphics Controller (rev 02)
> 00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series  
> Chipset HECI Controller (rev 06)
> 00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset  
> USB2 Enhanced Host Controller (rev 05)
> 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset  
> High Definition Audio (rev 05)
> 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI  
> Express Root Port 1 (rev 05)
> 00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI  
> Express Root Port 2 (rev 05)
> 00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset  
> USB2 Enhanced Host Controller (rev 05)
> 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
> 00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC  
> Interface Controller (rev 05)
> 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset  
> 4 port SATA AHCI Controller (rev 05)
> 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus  
> Controller (rev 05)
> 00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400  
> Series Chipset Thermal Subsystem (rev 05)
> 01:00.0 VGA compatible controller: nVidia Corporation Device 0a29 (rev a2)
> 02:00.0 Ethernet controller: Atheros Communications AR8131 Gigabit  
> Ethernet (rev c0)
> 03:00.0 Network controller: Broadcom Corporation Device 4357 (rev 01)
> ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath  
> Architecture Generic Non-core Registers (rev 02)
> ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath  
> Architecture System Address Decoder (rev 02)
> ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
> ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0  
> (rev 02)
> ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
> ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
>
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