Re: Graphical glitches (not refreshing?) with Linux's xe driver + Xen 4.19

[Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

On Thu, Feb 12, 2026 at 04:11:50PM +0100, Roger Pau Monné wrote:
> On Tue, Feb 10, 2026 at 07:06:20PM +0100, Marek Marczykowski-Górecki wrote:
> > Hi,
> > 
> > Recently I started testing compatibility with Intel Lunar Lake. This is
> > the first one that uses "xe" instead of "i915" Linux driver for iGPU.
> > I test it with Qubes OS 4.3, which uses Xen 4.19.4 and PV dom0 running
> > Linux 6.17.9 in this test.
> 
> Not sure it's going to help a lot, but does using a PVH dom0 make any
> difference?

Ok, now with the correct Xen version, it's better with PVH dom0. At
least on the login screen and few applications (from both dom0 and domU)
I don't see the glitches anymore. I can't do a full test, because PCI
passthrough doesn't seem to work with PVH dom0 on Xen 4.19 - and I need
it to start most VMs.

So, if the above test is representative, it's only about PV dom0.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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