Re: [Qemu-devel] Qemu and Longhorn

[Darryl Dixon]

Well.

    I managed to get a video driver for the Cirrus 5446 installed.  I shamelessly cribbed three files: cirrus.dll, cirrus.sys, and display.inf from the Windows XP SP2 install, and managed to put up with the pain involved in getting them installed/shoehorned into Longhorn.  They work perfectly.  Which leads me to another observation: Longhorn doesn't detect Qemu's floppy drive (I mkisofs'ed the above files and inserted the pretend cd to get them onto the virtual machine).  Whether this is because there is some sort of bug that Longhorn has revealed in the floppy emulation code, or whether Longhorn simply refuses to have any truck with such obsolete legacy devices as floppy drives I don't know ;)

    The thing that I discovered that made persevering with it possible is that the stupid clock that Longhorn slaps onto the right-hand taskbar by default chews CPU cycles like they're going out of style -- it has an animated seconds hand.  I just removed that entire toolbar and suddenly everything was a *lot* quicker.  With the clock gone and the Cirrus driver installed it is now roughly 3-4x as slow as the WinXP SP2 install with the same setup.  So it's usable, just ;)  (That and it has a *lot* of bugs, which makes things worse).

    I imagine that the driver for the RTL8029 that I have posted to this list previously also works correctly in Longhorn (if one has enough patience).  Perhaps I'll try it out tomorrow...

Regards,
D

On Thu, 2005-02-17 at 11:20 +1300, Darryl Dixon wrote:

Hi Fabrice,

    If possible, it is even slower without kqemu, and is in fact almost impossible to use.  There are some errors too, like no taskbar coming up, etc - presumably they simply take so long that the operation ends up going to the bit bucket... :)


D


On Wed, 2005-02-16 at 19:51 +0100, Fabrice Bellard wrote:

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 <address@hidden 
> <mailto:address@hidden>>
> 
> 
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