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From: "Francisco de la Peña" <fran@fran.cr>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [Bug 1781515] Re: Resolution switch leads to the screen/image being corrupted
Date: Fri, 13 Jul 2018 04:06:43 -0000	[thread overview]
Message-ID: <153145480325.4037.3734767939067856049.malone@gac.canonical.com> (raw)
In-Reply-To: 153144791597.24345.4188684272748961598.malonedeb@chaenomeles.canonical.com

Hi Diego,

It seems this is a known limitation[1] because horizontal width is not a
multiple of 8, try 1360x768 as the nearest resolution, which works for
me on guests not supporting QXL drivers.

Regards.

[1] Proposed patch from 2013: https://lists.gnu.org/archive/html/qemu-
devel/2013-03/msg02732.html

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https://bugs.launchpad.net/bugs/1781515

Title:
  Resolution switch leads to the screen/image being corrupted

Status in QEMU:
  New

Bug description:
  I am currently using QEMU on a Arch Linux host, the guest OS is also
  Arch Linux.

  The QEMU version is currently 2.12.0-2 packaged by Arch Linux, the
  command line I'm using to fire an Arch VM is:

  $ qemu-system-x86_64 -enable-kvm -hda archlinux.qcow2 -m 4G -smp 4

  The problem I'm currently having is, after firing the VM and running
  startx I want to change the resolution to the native resolution, which
  is 1366x768 on my ThinkPad T450, however, after changing the
  resolution the image on the guest gets corrupted and it's impossible
  to see anything.

  At this point I can only turn off the VM. The only workaround I found
  is to start the VM with -vga virtio.

  The problem in this case occurs with -vga std which is the default
  video driver.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1781515/+subscriptions

  parent reply	other threads:[~2018-07-13  4:20 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-13  2:11 [Qemu-devel] [Bug 1781515] [NEW] Resolution switch leads to the screen/image being corrupted Diego Viola
2018-07-13  2:16 ` [Qemu-devel] [Bug 1781515] " Diego Viola
2018-07-13  4:06 ` Francisco de la Peña [this message]
2018-07-13  4:27 ` Diego Viola
2020-11-12 15:37 ` Thomas Huth
2021-01-12  4:17 ` Launchpad Bug Tracker

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