[Qemu-devel] Network problems - any news?

[Qemu-devel] Network problems - any news?

[Johannes Martin]

Hi,

a few weeks ago, some people reported on their network connection being
flaky in a Win98 guest. I experience similar problems with a OS/2 guest.
Most of the time, it won't even receive a DHCP response.

Has anybody been able to track down the source of these problems yet? Are
they independent of the emulated NIC, or may I have better results using
one of the alternative NIC emulators?

Thanks
	Johannes

Re: [Qemu-devel] Network problems - any news?

[Antony T Curtis]

On Mon, 2004-08-02 at 22:55, Johannes Martin wrote:
> Hi,
> 
> a few weeks ago, some people reported on their network connection being
> flaky in a Win98 guest. I experience similar problems with a OS/2 guest.
> Most of the time, it won't even receive a DHCP response.
> 
> Has anybody been able to track down the source of these problems yet? Are
> they independent of the emulated NIC, or may I have better results using
> one of the alternative NIC emulators?

I have only had 100% success with my AMD PCNet NIC emulation when using
OS/2 guest. It was what partly what prompted me to write that emulation.

(since then, my OS/2 hd image was damaged by a bad block, I'll have to
reinstall)

-- 
Antony T Curtis, BSc.                   UNIX, Linux, *BSD, Networking
antony.t.curtis@ntlworld.com            C++, J2EE, Perl, MySQL, Apache
                                        IT Consultancy.

OS/2 net & graphics (was: [Qemu-devel] Network problems - any news?)

[Johannes Martin]

On Tue, 3 Aug 2004, Antony T Curtis wrote:
> > a few weeks ago, some people reported on their network connection being
> > flaky in a Win98 guest. I experience similar problems with a OS/2 guest.
> > Most of the time, it won't even receive a DHCP response.
> >
> > Has anybody been able to track down the source of these problems yet? Are
> > they independent of the emulated NIC, or may I have better results using
> > one of the alternative NIC emulators?
>
> I have only had 100% success with my AMD PCNet NIC emulation when using
> OS/2 guest. It was what partly what prompted me to write that emulation.

I tried your patch. It applies cleanly to the latest CVS and an earlier
version pretty close to 0.6.0, but qemu crashes after OS/2 has loaded the
PCNet driver and waits for a dhcp response (segmentation fault).

Running OS/2 Warp 4 with Fixpack 15 and DDFP 2.

How would I go about finding out where qemu crashes? When I attach gdb to
qemu it only tells me that the debuggee has gone away once it's crashed
and I still don't see where it happened. Is there a way to produce a core
dump?

BTW, I got SVGA support to work in OS/2 with the 'new' GENGRADD drivers
available at the OS/2 device driver pack online. Use -std-vga and the
generic Vesa-driver of GENGRADD.

	Johannes