[Qemu-devel] Booting Linux in Windows XP

[Qemu-devel] Booting Linux in Windows XP

[Aaron Feng]

Yesterday I tried QEMU for the first time, I downloaded the 0.70
Windows installer package, and everything installed just fine.  I also
downloaded Mandrake 10 image from freeoszoo.org, but I'm having
trouble to get Mandrake to boot.  Here is the command I used:

qemu.exe -L "path_to_my_mandrake_image"

Nothing happened, I just get the prompt back without any errors.  Is
there any way for me to get a more informative error messages when I'm
trying to boot?

Thanx in advance....

Aaron Feng

[Qemu-devel] re: Nothing happens

[Josef Moffett]

I have already sent this, but just before I was confirmed on the list, 
so I don't think it went through. If it did, please forgive me for a 
double post - and if you can let me have a ref to any replies it may 
have received.

I have just joined the mail list after coming up with a problem similar 
to one I googled here and perhaps to which I can add a bit more 
information. Unfortunatly, I can only add a little more prescision to 
the problem rather than any answers, but perhaps Rudi Lippert can verify 
if this is happening to him too.

I have a problem after compiling qemu with SDL-devel and KQemu support.

The problem seems similar to  what has been posted and replied to in the 
following messages
http://www.mail-archive.com/qemu-devel@nongnu.org/msg00540.html

but I did find the following with the -monitor stdio; that when I did a 
screen dump qemu was running and dumping valid (linux, win 98 and winxp) 
screen images. I only had no access to these - in other words the 
emulator was working fine, both with and without kqemu, but there was no 
console or visual output with which to manipulate the emulated virtual 
machine. (ie no visual and no keyboard/mouse access to the (hidden) 
console.)
here is my configure output

using: qemu-0.7.0-i386.tar.gz
and : kqemu-0.6.2-1.tar.gz

downloaded on Sat 11/06/2005 around 22:oo

----------------
joe@anvard:~/qemu-0.7.0> ./configure
Install prefix    /usr/local
BIOS directory    /usr/local/share/qemu
binary directory  /usr/local/bin
Manual directory  /usr/local/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path       /home/joe/qemu-0.7.0
C compiler        gcc
make              make
host CPU          i386
host big endian   no
target list       i386-user arm-user armeb-user sparc-user ppc-user 
i386-softmmu ppc-softmmu sparc-softmmu x86_64-softmmu
gprof enabled     no
static build      no
SDL support       yes
SDL static link   no
mingw32 support   no
Adlib support     no
FMOD support      no
kqemu support     yes

KQEMU Linux module configuration:
kernel sources    /lib/modules/2.6.8-24.16-default/build
kbuild type       2.6
-----------------

I am running under Suse 9.2 and the precompiled binaries work right "out 
of the box" (even the network stuff which some people seem to be having 
trouble with) but are just a tad too slow for what I wanted to use qemu 
for so I wanted to try with kqemu built in.

I first just tried without the SDL-devel libs, but that was the same, 
and the above mentioned thread suggested that SDL may be a cause 
(although I suspect we may be talking of different problems). The thing 
is, once the virtual machine achieves a state of "completion" (ie 
windows gets to the login promt, or linux gets to the bash prompt - same 
problem there by the way) the cpu cycles disappear as the virtual 
machine is not doing any work at all. So perhaps the problem is the same?

Any help would be appreciated...

Re: [Qemu-devel] re: Nothing happens

[Paul Brook]

> I first just tried without the SDL-devel libs, but that was the same,
> and the above mentioned thread suggested that SDL may be a cause
> (although I suspect we may be talking of different problems).

Did you actually do a clean build after installing sdl-devel? You need to 
either delete your build directory or do "make clean" before rebuilding. 
Otherwise qemu will reuse the old (output disabled) object files.

> The thing 
> is, once the virtual machine achieves a state of "completion" (ie
> windows gets to the login promt, or linux gets to the bash prompt - same
> problem there by the way) the cpu cycles disappear as the virtual
> machine is not doing any work at all.

That's normal. When the guest suspends the CPU (via the HLT instruction) 
there's no need to qemu to do anything, so it doesn't. Real CPUs do the same 
thing.

Paul

Re: [Qemu-devel] re: Nothing happens

[Thayne Harbaugh]

On Thu, 2005-06-16 at 17:36 +0100, Paul Brook wrote:
> > I first just tried without the SDL-devel libs, but that was the same,
> > and the above mentioned thread suggested that SDL may be a cause
> > (although I suspect we may be talking of different problems).
> 
> Did you actually do a clean build after installing sdl-devel? You need to 
> either delete your build directory or do "make clean" before rebuilding. 
> Otherwise qemu will reuse the old (output disabled) object files.

Don't forget that configure needs to be re-run so that SDL can be
re-detected.

Re: [Qemu-devel] re: Nothing happens

[Josef Moffett]

Thayne Harbaugh wrote:

>>Did you actually do a clean build after installing sdl-devel? You need to 
>>either delete your build directory or do "make clean" before rebuilding. 
>>Otherwise qemu will reuse the old (output disabled) object files.
>>    
>>
>
>Don't forget that configure needs to be re-run so that SDL can be
>re-detected.
>
>
>
>
>_______________________________________________
>Qemu-devel mailing list
>Qemu-devel@nongnu.org
>http://lists.nongnu.org/mailman/listinfo/qemu-devel
>  
>
Oh dear, what a silly bunt.

I threw the make clean out of the window, so of course it didn't work.

I cringe with shame! ;-)

Sorry to have wasted your time on something that mind bendingly simple!

Cheers

Joe

Re: [Qemu-devel] re: Nothing happens

[Henrik Nordstrom]

On Thu, 16 Jun 2005, Josef Moffett wrote:

> but I did find the following with the -monitor stdio; that when I did a 
> screen dump qemu was running and dumping valid (linux, win 98 and winxp) 
> screen images. I only had no access to these - in other words the emulator 
> was working fine, both with and without kqemu, but there was no console or 
> visual output with which to manipulate the emulated virtual machine. (ie no 
> visual and no keyboard/mouse access to the (hidden) console.)

Sounds very much like the SDL driver didn't get compiled for whatever 
reason, or you are using the -nographic qemu command line flag do disable 
graphic output..

> I first just tried without the SDL-devel libs, but that was the same

If you don't have SDL development libs then only "dumb" (hidden) graphics 
mode is available.

Try

    make clean
    ./configure
    make

In your configure output I notice you didn't have static versions of the 
SDL libraries available. This will limit the availability of the SDL 
support somewhat.

Use the following to verify which modes have SDL support after you ran 
configure:

   grep CONFIG_SDL */config.h

You should at least see CONFIG_SDL for i386-softmmu.

Regards
Henrik

Re: [Qemu-devel] re: Nothing happens

[Paul Brook]

> In your configure output I notice you didn't have static versions of the
> SDL libraries available. This will limit the availability of the SDL
> support somewhat.

In most cases it doesn't make any difference. Static SDL is only needed if 
you're building qemu-fast or you're building everything as static libraries, 
neither of which are the default.

Paul

Re: [Qemu-devel] re: Nothing happens

[Josef Moffett]

Paul Brook wrote:

>>In your configure output I notice you didn't have static versions of the
>>SDL libraries available. This will limit the availability of the SDL
>>support somewhat.
>>    
>>
>
>In most cases it doesn't make any difference. Static SDL is only needed if 
>you're building qemu-fast or you're building everything as static libraries, 
>neither of which are the default.
>
>Paul
>
>
>_______________________________________________
>Qemu-devel mailing list
>Qemu-devel@nongnu.org
>http://lists.nongnu.org/mailman/listinfo/qemu-devel
>  
>
Okay - a flood of replies.

I am going to try the make clean, etc again.

I seem to remember doing it, but can't be 100% sure so better try that. 
I did do the ./configure though because that gave me the option for SDL 
or no SDL.

Thanks for all the replies, I'll report back on that as soon as I've 
tried it - ie in about 10mins ;-)

Cheers

Joe

Re: [Qemu-devel] Booting Linux in Windows XP

[André Braga]

2005/6/16, Aaron Feng <aaron.feng@gmail.com>:
> Yesterday I tried QEMU for the first time, I downloaded the 0.70
> Windows installer package, and everything installed just fine.  I also
> downloaded Mandrake 10 image from freeoszoo.org, but I'm having
> trouble to get Mandrake to boot.  Here is the command I used:
> 
> qemu.exe -L "path_to_my_mandrake_image"
> 
> Nothing happened, I just get the prompt back without any errors.  Is
> there any way for me to get a more informative error messages when I'm
> trying to boot?

Well, I guess you misunderstood the documentation, as you gave QEMU
the wrong option. -L is supposed to be fed with the path to the BIOS
image, not the OS image. The OS image file should be specified with
-hda or -cdrom, depending on the case.




-- 
"I invented the term Object-Oriented, and I can tell you I did not
have C++ in mind"-Alan Kay