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Re: [Xen-users] Dom0 won't startx

Please keep xen-users in the Cc.

On Wed, Aug 01, 2018 at 11:47:23AM -0400, Paul Gorman wrote:
> On Wed, Aug 1, 2018, 10:49 AM Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
> > On Mon, Jul 30, 2018 at 01:13:07PM -0400, Paul Gorman wrote:
> > > Im using the the amdgpu driver. On gentoo, glamor is not an optional
> > > dependency of such.
> > >
> > > In Xorg.0.log, the first error line is as follows:
> > >
> > > > (EE) glamor0: GL error: GL_OUT_OF_MEMORY in glTextSubImage
> > >
> > > Is there some kind of incompatibility? Or is there further setup that I
> > > need to do beyond the bootloader? Is there some out-of-project patch
> > that I
> > > need for xen?
> >
> > Not that I'm aware. How much memory are you assigning to Dom0?
> >
> > Roger.
> >
> 1024M to start, up to 8192M. Eventually, I just gave it the whole 32GiB to
> see if that would fix it. No progress.
> With increased verbosity on the logs, gallium seems to he the culprit. When
> I tried rebuilding the system without it (gentoo), any gui tools like
> firefox became unusably slow.
> I got a dirty workaround by replacing my desktop background with a solid
> color. Startx works then, but with some nasty screen artifacts
> *everywhere*, especially in firefox. And opening up an image file crashes X.
> Still have no such problems when booting the kernel directly, only when
> using it as Dom0. The firmware is compiled directly into the kernel. Any
> Xen related options are compiled in. Kernel side amdgpu drivers are
> compiled in as well.
> Should I need gpu passthrough to even get dom0's Xorg to function
> correctly?

Dom0 already has all the devices passed-through, you shouldn't need
anything else.

Which version of Xen and Linux are you using, and on what hardware?


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