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[Qemu-devel] [Bug 589231] Re: cirrus vga is very slow in qemu-kvm-0.12


From: Launchpad Bug Tracker
Subject: [Qemu-devel] [Bug 589231] Re: cirrus vga is very slow in qemu-kvm-0.12
Date: Wed, 28 Dec 2016 04:17:27 -0000

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/589231

Title:
  cirrus vga is very slow in qemu-kvm-0.12

Status in QEMU:
  Expired

Bug description:
  As has been reported multiple times (*), there were a regression in
  qemu-kvm from 0.11 to 0.12, which causes significant slowdown in
  cirrus vga emulation.  For windows guests, where "standard VGA" driver
  works reasonable well, -vga std is a good workaround. But for e.g.
  linux guests, where vesa driver is painfully slow by its own, that's
  not a solution.

  (*)
   debian qemu-kvm bug report #574988: http://bugs.debian.org/574988#17
   debian qemu bugreport (might be related): http://bugs.debian.org/575720
   kvm mailinglist thread: 
http://www.mail-archive.com/address@hidden/msg33459.html
   another kvm ml thread: 
http://www.mail-archive.com/address@hidden/msg32744.html

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