xen_kernel, console and X11

Outback Dingo outbackdingo at gmail.com
Sun May 3 02:41:10 UTC 2015

On Sun, May 3, 2015 at 1:43 AM, Roman Bogorodskiy <novel at freebsd.org> wrote:

> Hi,
> I'm trying to get Xen running and following these instructions:
> https://wiki.freebsd.org/Xen
> and
> http://wiki.xen.org/wiki/FreeBSD_Dom0
> I'm running two days old -CURRENT and ports. I've installed the
> emulators/xen port and followed instructions in pkg-message.
> I'm having some problems with console. I'm wondering if it's possible to
> have X running on the same box running xen kernel?
> My setup is as follows:
>  - Intel i5-4690 that supports IOMMU:
>     $ sudo acpidump -t|grep DMAR
>       DMAR: Length=128, Revision=1, Checksum=90,
>     $
>  - vm.max_wired=-1 in /etc/sysctl.conf
>  - xc0     "/usr/libexec/getty Pc"         xterm   on  secure in
>    /etc/ttys
> In loader.conf I have:
> xen_kernel="/boot/xen"
> xen_cmdline="dom0_mem=2048M dom0_max_vcpus=4 dom0pvh=1 com1=115200,8n1
> guest_loglvl=all loglvl=all console=com1"
> With this setup I get my system booted and at some point I can see a
> login screen. When I type 'startx' the system freezes. Have to hard
> reboot it to get working again.
> When I drop 'console=com1' from 'xen_cmdline', I cannot even see a login
> screen. All I can see is a black screen with a white cursor. It doesn't
> respond to any input though. On the other hand, the system doesn't seem
> to be frozen, at least power button triggers an ACPI event for power
> off.

I can concur, I am seeing the same thing as the configuration you have
follwing that doc this morning.
I also have the black screen with the white cursor.....

> Am I hitting some bug or is that some configuration issue?
> Thanks,
> Roman Bogorodskiy

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