* Minor regression with ramfb+gvt-g+edk2 with qemu 4.1
@ 2019-09-26 10:51 Maxim Levitsky
2019-10-01 0:19 ` Maxim Levitsky
0 siblings, 1 reply; 2+ messages in thread
From: Maxim Levitsky @ 2019-09-26 10:51 UTC (permalink / raw)
To: qemu-devel; +Cc: Gerd Hoffmann
Hi!
I noticed that with qemu 4.1, when I try to open the
UEFI bios screen, the screen output is garbaged.
Basicaly what happens is this:
ramfb driver inside the uefi bios is hardcoded to initialize
the resolution to 800x600
Then when you enter the BIOS screen, it switches the resolution
to the 'preferred resolution' which by default is 640x480
However since commit a9e0cb67b7f4c485755659f9b764c38b5f970de4,
ramfb resolution is locked once it is set once, thus,
the switch to 640x480 is ignored.
Best regards,
Maxim Levitsky
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Minor regression with ramfb+gvt-g+edk2 with qemu 4.1
2019-09-26 10:51 Minor regression with ramfb+gvt-g+edk2 with qemu 4.1 Maxim Levitsky
@ 2019-10-01 0:19 ` Maxim Levitsky
0 siblings, 0 replies; 2+ messages in thread
From: Maxim Levitsky @ 2019-10-01 0:19 UTC (permalink / raw)
To: qemu-devel; +Cc: Gerd Hoffmann
On Thu, 2019-09-26 at 13:51 +0300, Maxim Levitsky wrote:
> Hi!
>
> I noticed that with qemu 4.1, when I try to open the
> UEFI bios screen, the screen output is garbaged.
>
> Basicaly what happens is this:
>
> ramfb driver inside the uefi bios is hardcoded to initialize
> the resolution to 800x600
>
> Then when you enter the BIOS screen, it switches the resolution
> to the 'preferred resolution' which by default is 640x480
>
> However since commit a9e0cb67b7f4c485755659f9b764c38b5f970de4,
> ramfb resolution is locked once it is set once, thus,
> the switch to 640x480 is ignored.
>
> Best regards,
> Maxim Levitsky
Ping!
Best regards,
Maxim Levitsky
^ permalink raw reply [flat|nested] 2+ messages in thread
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