Re: [Xen-users] My GPU won't pass through. Is this my goodbye to Xen?

[Folatt <folatt@xxxxxxxxxxxx>]

Dear Xen-users.

Thank you, thank you, thank you.
I was not aware of the vfb option.
You have given me hope again.

I have not been able to start a desktop manager yet, but I'm not getting 
the same problem anymore.
My current problem however is that DomU greets me in a small window.
I tried setting xen-fbfront.video to a higher resolution, but has no effect.


/etc/xen/ArkOS-dev_PV.cfg now looks like this:

name = 'ArkOS_Dev'
bootloader = "pygrub"
#kernel = "/mnt/arch/boot/x86_64/vmlinuz"
#ramdisk = "/mnt/arch/boot/x86_64/archiso.img"
#extra = "archisobasedir=arch archisolabel=ARCH_201511"
memory = 2048
vcpus = 3
disk = [ "format=raw, vdev=xvda, access=rw, 
target=/dev/vm_volumes/root.ArkOS_Dev",
         "format=raw, vdev=xvdb, access=rw, 
target=/dev/vm_volumes/swap.ArkOS_Dev"
       ]
vif = [ 'mac=00:16:3e:49:2b:a1,bridge=xenbr0' ]
vfb = ['type=vnc,vnclisten=0.0.0.0']
root = "/dev/xvda rw"


and my pygrub looks like this:

menuentry 'Arch GNU/Linux, with Linux core repo kernel' --class arch 
--class gnu-linux --class gnu --class os $menuentry_id_option 
'gnulinux-core repo kernel-true-a6ecbc99-beca-4c22-b591-51846a193e25' {
        insmod gzio
        insmod part_msdos
        insmod ext2
        set root='hd0,msdos1'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root 
--hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 
--hint-baremetal=ahci0,msdos1  a6ecbc99-beca-4c22-b591-51846a193e25
        else
          search --no-floppy --fs-uuid --set=root 
a6ecbc99-beca-4c22-b591-51846a193e25
        fi
        echo    'Loading Linux core repo kernel ...'
        linux   /boot/vmlinuz-linux 
root=UUID=a6ecbc99-beca-4c22-b591-51846a193e25 ro
        echo    'Loading initial ramdisk ...'
        initrd  /boot/initramfs-linux.img
        echo    'Setting resolution paravirtualized framebuffer ...'
        xen-fbfront.video=32,1024,768
}


Folatt.


On 01-12-15 10:15, Ian Campbell wrote:
> On Mon, 2015-11-30 at 16:38 -0300, Zir Blazer wrote:
> > Two things: Try using a HVM, not PV. And check X.org config inside
> > the VM, manually make a .conf file. You may need to use the FBDev
> > Driver, I recall having issues with that at some point.
> If sticking with PV then the vfb= option[1] would be needed to create a
> suitable /dev/fb0 device to run X. PV guests have no graphics devices
> by default and the posted guest config didn't include one.
>
> If running HVM then it might be worth playing with the vga= option[0]
> in the guest cfg to pick a graphics card better supported by the guest
> distro. (stdvga might be a better choice than the default cirrus these
> days).
>
> Ian.
>
> [0] 
> http://xenbits.xen.org/docs/unstable/man/xl.cfg.5.html#emulated_vga_graphics_device
> [1] http://xenbits.xen.org/docs/unstable/man/xl.cfg.5.html#devices

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