[gentoo-user] Re: 3D graphics acceleration on QEMU

[Mick]

On Sunday 16 Jul 2017 16:20:15 Mick wrote:
> I launched a Linux Mint liveDVD in QEMU like so:
>
> qemu-system-x86_64 -m 1024 -enable-kvm -drive
> if=virtio,file=Mint_18.2_HDA.qcow2,cache=none -cdrom linuxmint-18.2-
> cinnamon-64bit.iso
>
> and noticed a warning popping up informing me Cinnamon is running without
> video hardware acceleration available and everything will be rendered in
> software.
>
> I've had a similar experience when running Cinnamon on VirtualBox on a quite
> old 32bit desktop, but thought this i7 laptop + QEMU may fair better.
>
> Another annoying thing was the bottom of the screen was cropped off and to
> see the main menu and toolbar I have to move the mouse past the bottom edge
> of the window.  The visual aperture is smaller than the desktop screen
> size.  I don't know if this in anyway related to the above warning.
>
> Anyway, is there a setting I could enable to have hardware acceleration on
> QEMU, or have I come across a hardware limitation of this laptop?  Grateful
> for any pointers.

Hmm ... it seems this is also a rather old laptop:

# dmesg | grep -e DMAR -e IOMMU
#

There is no explicit IOMMU setting in the BIOS.
-- 
Regards,
Mick