Re: [Qemu-devel] Qemu and Longhorn

[Natalia Portillo <iosglpgc@teleline.es>]

This performance problems exists even in real hardware if the video  
card isn't installed.

Contrary to Windows XP, if the video card hasn't a driver it goes to  
VGA (not to VESA as XP) and goes extremely slow.

Longhorn doesn't have enabled the Direct3D interface by default so this  
is not the problem.

El 16/02/2005, a las 18:51, Fabrice Bellard escribió:

> Do you have the same performance problems without kqemu ?
>
> Fabrice.
>
> Darryl Dixon wrote:
>>   Hi All,
>>     Just for giggles I ran an install of Longhorn build 4074 on CVS  
>> Qemu today with kqemu.  The install seemed to go well; the first  
>> stage didn't recognise any mouse (probably more a Windows error than  
>> a Qemu one), but was otherwise perfectly rendered (with what appeared  
>> to be a vesa video mode) and usable with the keyboard.  It proceeded  
>> reasonably quickly.  After the first reboot, the mouse was detected  
>> and worked, and it once again proceed reasonably quickly (vesa video  
>> mode again), up until it started detecting the hardware, at which  
>> point it stuck for around an hour (it was actually doing work and  
>> processing the whole time).  During this all seemed well, and I even  
>> watched it detect the video OK and flip from 640x480 to 800x600.   
>> Once it made it past the hardware detect and booted into the actual  
>> Windows GUI, things got painful.  Apparently even though the  
>> installer knows how to use vesa video, Windows itself and the  
>> standard VGA display driver it installed *don't* and so I was left  
>> with a 640x480 16 colour display that ran *agonisingly* slowly,  
>> presumably as all of the video calls were being emulated through  
>> calls to the Bochs BIOS.  It was glacial.  Anyhow, I managed to  
>> soldier through a few windows to the Device Manager, and from what I  
>> could see everything except the network card had been detected OK  
>> (except of course that the video was 'Standard VGA').  Presumably the  
>> network card just needs the Win2000 RTL8029 driver like Server 2003  
>> did.  I tried to fix the video so I'd be able to give Qemu + Longhorn  
>> a proper test, but after (literally) hours to get through the driver  
>> update wizard and find that my only choice was the standard VGA or  
>> something called a 'BARCO', I gave up and wrote this short summary  
>> instead :)   Presumably a more patient man would be able to install  
>> the Cirrus Win2000 driver and Longhorn on Qemu would be usable...
>> Many regards,
>> --  
>> Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net  
>> <mailto:esrever_otua@pythonhacker.is-a-geek.net>>
>> ---------------------------------------------------------------------- 
>> --
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