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

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/address@hidden/msg33459.html
 another kvm ml thread: http://www.mail-archive.com/address@hidden/msg32744.html