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

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

[Michael Tokarev]

Public bug reported:

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/kvm@vger.kernel.org/msg33459.html
 another kvm ml thread: http://www.mail-archive.com/kvm@vger.kernel.org/msg32744.html

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: 0.12 cirrus qemu-kvm regression slow video

-- 
cirrus vga is very slow in qemu-kvm-0.12
https://bugs.launchpad.net/bugs/589231
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Status in QEMU: New

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/kvm@vger.kernel.org/msg33459.html
 another kvm ml thread: http://www.mail-archive.com/kvm@vger.kernel.org/msg32744.html

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

[Thomas Huth]

QEMU 0.12 is pretty much outdated - has this been fixed in a newer
version of QEMU? I.e. do you think we can close this bug nowadays?

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

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

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

Status in QEMU:
  Incomplete

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/kvm@vger.kernel.org/msg33459.html
   another kvm ml thread: http://www.mail-archive.com/kvm@vger.kernel.org/msg32744.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/589231/+subscriptions

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

[Launchpad Bug Tracker]

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

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

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
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/kvm@vger.kernel.org/msg33459.html
   another kvm ml thread: http://www.mail-archive.com/kvm@vger.kernel.org/msg32744.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/589231/+subscriptions