Re: Testing the gtk fe with qemu

[Attilio Fiandrotti <fiandro@tiscalinet.it>]

Hi davide

i'm preparing a bootable netinst iso image including an hacked initrd 
containing all the files needed by the gtk fe, but when i start qemu i 
cannot obtain vga modes.
all i get are "dirty" qemu vga screens, even if XFree config file was 
setten do use vga driver at 640x480x8, any idea on how to obtain clean 
screens?

ciao

attilio


Davide Viti wrote:
> Hi,
> here follow a few notes I've written as I was trying to get the gtk fe
> for the installer to work with qemu. I did not go too deep into details
> but it shoud be really easy to follow these steps.
>
> For my tests I used sarge-i386-netinst.iso rc3 [1] and attilio X
> environment [2]:
>
> [1] http://cdimage.debian.org/pub/cdimage-testing/sarge_d-i/i386/rc3/sarge-i386-businesscard.iso
>
> [2] https://debian.polito.it/downloads/d-i_xsrv.tar.gz
>
> In order to be able to use [2] from within Qemu, I created and iso
> image that qemu will use as if it were a cdrom
>
> cp d-i_xsrv.tar.gz isodir
> mkisofs -r -o x_env_di.iso isodir/
>
> After creating an hd image test_di.img (didn't care about its huge size)
>
>
> > qemu-img create test_di.img -s 1G
>
>
> start qemu:
>
> > qemu -cdrom sarge-i386-netinst.iso -hda test_di.img -boot d
>
>
> boot the installer:
> expert vga=788
>
> configure network as to have loopback interface 
> configure partitions (if you need) as to have enough swap space
>
> switch to console (ctrl-f2)
>
> > mount -o remount,size=200M /dev/shm /
> > umount /cdrom
>
>
> ctrl-alt-2 (to switch to qemu monitor)
> (qemu) change cdrom x_env_di.iso
> ctrl-alt-1 (to get back to vt2)
>
> now mount the cdrom image containig the X environment
>
> > mount /dev/cdroms/cdrom0 /cdrom
> > tar xzf /cdrom/d-i_xsrv.tar.gz -C /
>
>
> now edit X config file and configure qemu ps2 mouse
>
>
>
> > nano /etx/X11/XF86Config-4
>
> ========================================
> Section "InputDevice"
> 	Identifier "Mouse0"
> ...
> -	Option "Protocol" "IMPS/2" <<<<<<< change this...
> +	Option "Protocol" "PS/2"   <<<<<<< into this
> 	Option "Device" "/dev/psaux"
> ...
> ========================================
>
> now edit the gtk fe startup script and comment out a the lines
> which deal with usb mouse like this:
>
>
> > nano /bin/gtk_go.sh
>
> ========================================
> # modprobe usbmouse
> # modprobe mousedev
> ========================================
>
> remove psaux and re-create it
>
> > rm /dev/psaux
> > mknod /dev/psaux c 10 1
>
>
>
> before running the gtk fe save the status of the VM so that
> you don't have to go through all these steps every time:
>
> ctrl-alt-2
> (qemu) savevm di_vm
> ctrl-alt-1
>
> finally...
>
> > gtk_go.sh
>
>
> Have fun!
> here's a screenshot of the Japanese d-i
> http://www.webalice.it/zinosat/gtk_fe_jp.jpg
>
> ciao
>
> Davide