Re: [Qemu-devel] [PULL 3/3] cirrus: Fix host CPU blits

[Peter Lieven <pl@kamp.de>]

On 14.07.2014 11:53, Gerd Hoffmann wrote:
>    Hi,
>
>> Do you see a way to work around this in the graphics driver. E.g. blacklisting 24bpp modes
>> etc. Even if X.Org people actually merge the fixes there are 2 years of Linux releases out
>> there that have corrupted graphics.
> For anything using kernel 3.14+ IMO the answer to pretty much *any* gfx
> issue is "use stdvga instead of cirrus".  3.14 got a kms driver for the
> qemu stdvga (bochsdrm), so the modesetting driver and all the modern
> stuff such as root-less X server works with the stdvga too.  And the
> constrains cirrus has (due to emulating existing, old hardware) are
> gone.

Thats good news. For older Linuxs it seems that also -vga vmware is a good alternative.
The only thing that is a bit odd is that the X.Org driver automatically switches to the maximum
resolution at start. I will eventually add a patch to limit the maximum resolution on the qemu command
line.

-vga std was also a good choice, but for Win2012(R2) the maximum resolution is at 1024x768 so I
had to switch to -vga vmware there as well.

Peter