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Re: Possible regression with VGA and resolutions in Windows 10?
From: |
Laszlo Ersek |
Subject: |
Re: Possible regression with VGA and resolutions in Windows 10? |
Date: |
Thu, 23 Jul 2020 18:19:04 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 Thunderbird/52.9.1 |
On 07/23/20 16:24, Aaron Lauterer wrote:
> Hi all,
>
> I think we have a regression introduced in commit 0221d73ce6.
>
> Once I start a Windows 10 VM (build 18363) with `-device VGA` I have
> only the following resolutions to choose from instead of the much longer
> list:
>
> 1920x1080
> 1024x768
> 800x600
>
> Linux guests work fine.
>
> qemu-system-x86_64 \
> -name windows-resolution-test \
> -smp '2,sockets=1,cores=2,maxcpus=2' \
> -nodefaults \
> -cpu host,+kvm_pv_eoi,+kvm_pv_unhalt \
> -m 3072 \
> -device 'piix3-usb-uhci,id=uhci,bus=pci.0,addr=0x1.0x2' \
> -device 'usb-tablet,id=tablet,bus=uhci.0,port=1' \
> -device 'VGA,id=vga,vgamem_mb=32,bus=pci.0,addr=0x2' \
> -device 'virtio-scsi-pci,id=scsihw0,bus=pci.0,addr=0x5' \
> -drive
> 'file=/dev/zvol/rpool/data/vm-102-disk-0,if=none,id=drive-scsi0,discard=on,format=raw,cache=none,aio=native,detect-zeroes=unmap'
> \
> -device
> 'scsi-hd,bus=scsihw0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0,id=scsi0,rotation_rate=1,bootindex=100'
> \
> -machine pc,accel=kvm
>
>
> I have not yet gotten around to bisect the SeaBIOS repository to know
> exactly which commit there is causing it.
>
> If this is better handled at the SeaBIOS mailing list, let me know.
I'm vaguely reminded of
<http://mid.mail-archive.com/20200625091709.8550-1-kraxel@redhat.com>,
but no promises.
Laszlo