Package: qemu-kvm Version: 0.12.4+dfsg-1 Severity: normal Tags: upstream patch
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The qemu monitor prints "alsa: Unexpected state 1" in a tight busy loop when running kvm with "-soundhw ac97". This loop consumes so much CPU that it slows down the virtual machine, and the large number of error messages makes the monitor useless. This bug has been fixed upstream, but for some reason not in the stable upstream branch. I'm attaching a patch, cherry picked from the upstream master branch. This patch fixes the problem for me when applied to the currently unreleased 0.12.4+dfsg-2 debian version. Bjørn - -- Package-specific info: /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU U9400 @ 1.40GHz stepping : 6 cpu MHz : 800.000 cache size : 3072 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm ida tpr_shadow vnmi flexpriority bogomips : 2793.38 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU U9400 @ 1.40GHz stepping : 6 cpu MHz : 800.000 cache size : 3072 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm ida tpr_shadow vnmi flexpriority bogomips : 2793.67 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: - -- System Information: Debian Release: squeeze/sid APT prefers testing APT policy: (990, 'testing'), (700, 'stable'), (600, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages qemu-kvm depends on: ii adduser 3.112 add and remove users and groups ii bridge-utils 1.4-5 Utilities for configuring the Linu ii iproute 20100519-2 networking and traffic control too ii libaio1 0.3.107-7 Linux kernel AIO access library - ii libasound2 1.0.23-1 shared library for ALSA applicatio ii libbluetooth3 4.66-1 Library to use the BlueZ Linux Blu ii libbrlapi0.5 4.2-2+b1 braille display access via BRLTTY ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib ii libcurl3-gnutls 7.21.0-1 Multi-protocol file transfer libra ii libgnutls26 2.8.6-1 the GNU TLS library - runtime libr ii libncurses5 5.7+20100313-2 shared libraries for terminal hand ii libpci3 1:3.1.7-4 Linux PCI Utilities (shared librar ii libpulse0 0.9.21-3 PulseAudio client libraries ii libsasl2-2 2.1.23.dfsg1-5 Cyrus SASL - authentication abstra ii libsdl1.2debian 1.2.14-6 Simple DirectMedia Layer ii libuuid1 2.17.2-3.1 Universally Unique ID library ii libvdeplug2 2.2.3-3 Virtual Distributed Ethernet - Plu ii libx11-6 2:1.3.3-3 X11 client-side library ii python 2.6.5-5 An interactive high-level object-o ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime Versions of packages qemu-kvm recommends: ii linux-image-2.6.32-4-amd64 [l 2.6.32-11 Linux 2.6.32 for 64-bit PCs ii linux-image-2.6.32-5-amd64 [l 2.6.32-17 Linux 2.6.32 for 64-bit PCs Versions of packages qemu-kvm suggests: pn debootstrap <none> (no description available) pn samba <none> (no description available) ii vde2 2.2.3-3 Virtual Distributed Ethernet - -- no debconf information -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkw8Of0ACgkQ10rqkowbIsnJZwCeO70wUbqX4FNRAtHLMMEBV02v LMwAoIZdyYR7hnOrzstKFmQ0UDzza6D6 =NupA -----END PGP SIGNATURE-----
>From cf50ec03c78e2ac976f731cc890dd0824ac43658 Mon Sep 17 00:00:00 2001 From: malc <[email protected]> Date: Sun, 28 Feb 2010 18:34:21 +0300 Subject: [PATCH] audio/alsa: Handle SND_PCM_STATE_SETUP in alsa_poll_handler MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: malc <[email protected]> (cherry picked from commit d9812b033a17c82f9e933757c1c3ef364e3ba62d) Signed-off-by: Bjørn Mork <[email protected]> --- audio/alsaaudio.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c index 6a9b87a..88344ff 100644 --- a/audio/alsaaudio.c +++ b/audio/alsaaudio.c @@ -213,6 +213,10 @@ static void alsa_poll_handler (void *opaque) state = snd_pcm_state (hlp->handle); switch (state) { + case SND_PCM_STATE_SETUP: + alsa_recover (hlp->handle); + break; + case SND_PCM_STATE_XRUN: alsa_recover (hlp->handle); break; -- 1.7.1
