问题描述
对一堆pulseaudio程序包进行更新后，我的麦克风停止工作。没关系，毕竟Karmic仍然在Alpha中。我已将该错误报告给启动板。
同时，我想恢复pulseaudio软件包的更新。不幸的是，没有一个软件包允许我在Synaptic上选择”Force Version”选项。我曾考虑先删除它们，然后再安装旧软件包，但是删除脉冲意味着删除名为ubuntu-desktop的软件包，我担心这可能会使事情更加混乱。我很难找到旧版本的软件包，但最终我将每个* .deb都下载到了我的机器上。
这些是根据Synaptic的历史记录进行的更新。
libpulse-browse0 (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
libpulse-mainloop-glib0 (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
libpulse0 (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio-esound-compat (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio-module-bluetooth (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio-module-gconf (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio-module-x11 (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio-module-zeroconf (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio-utils (1:0.9.15-4ubuntu3) to 1:0.9.16~test4-0ubuntu1
pulseaudio-module-udev (1:0.9.16~test4-0ubuntu1)
有什么建议吗？
最佳答案
如果您不怕弄脏自己的手，最好的方法是：
apt-cache show packagename
它将根据您的sources.list定义向您显示可以安装的软件包的所有不同版本。您会得到类似的东西(这就是我的样子)：
root@shiny-desktop:/home/shiny# apt-cache show libpulse-browse0
Package: libpulse-browse0
Status: install ok installed
Priority: optional
Section: sound
Installed-Size: 100
Maintainer: Ubuntu Core Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Architecture: i386
Source: pulseaudio
Version: 1:0.9.15-4ubuntu2~ppa1
Depends: libavahi-client3 (>= 0.6.16), libavahi-common3 (>= 0.6.16), libc6 (>= 2.4), libcap1, libdbus-1-3 (>= 1.0.2), libgdbm3, libice6 (>= 1:1.0.0), libpulse0 (= 1:0.9.15-4ubuntu2~ppa1), libsm6, libwrap0 (>= 7.6-4~), libx11-6, libxtst6
Description: PulseAudio client libraries (zeroconf support)
PulseAudio, previously known as Polypaudio, is a sound server for POSIX and
WIN32 systems. It is a drop in replacement for the ESD sound server with
much better latency, mixing/re-sampling quality and overall architecture.
.
Client libraries used by applications that access a PulseAudio sound server
via PulseAudio's native interface.
.
This package adds support for zeroconf (aka. Avahi, mdns) discovery of
PulseAudio sinks and sources by client applications.
Homepage: http://www.pulseaudio.org
Original-Maintainer: Pulseaudio maintenance team <pkg-pulseaudio-devel@lists.alioth.debian.org>
Package: libpulse-browse0
Priority: optional
Section: sound
Installed-Size: 144
Maintainer: Ubuntu Core Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Pulseaudio maintenance team <pkg-pulseaudio-devel@lists.alioth.debian.org>
Architecture: i386
Source: pulseaudio
Version: 1:0.9.14-0ubuntu20.2
Depends: libavahi-client3 (>= 0.6.16), libavahi-common3 (>= 0.6.16), libc6 (>= 2.4), libcap2 (>= 2.11), libgdbm3, libice6 (>= 1:1.0.0), libpulse0 (>= 0.9.14), libsm6, libx11-6
Filename: pool/main/p/pulseaudio/libpulse-browse0_0.9.14-0ubuntu20.2_i386.deb
Size: 31522
MD5sum: d7bf325c04432507420551d7c4e04737
SHA1: 537037b6cdcf2e36ab91fff73a543b2bc9a9d2f6
SHA256: 25c9a83f669f3f14b0fdd59141fc048e3053ccdcae5817f338260342ae1164d0
Description: PulseAudio client libraries (zeroconf support)
PulseAudio, previously known as Polypaudio, is a sound server for POSIX and
WIN32 systems. It is a drop in replacement for the ESD sound server with
much better latency, mixing/re-sampling quality and overall architecture.
.
Client libraries used by applications that access a PulseAudio sound server
via PulseAudio's native interface.
.
This package adds support for zeroconf (aka. Avahi, mdns) discovery of
PulseAudio sinks and sources by client applications.
Homepage: http://www.pulseaudio.org
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Task: ubuntu-desktop, kubuntu-dvd-live, edubuntu-desktop, xubuntu-live, mobile-mid, mobile-netbook-remix
Package: libpulse-browse0
Priority: optional
Section: sound
Installed-Size: 144
Maintainer: Ubuntu Core Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Pulseaudio maintenance team <pkg-pulseaudio-devel@lists.alioth.debian.org>
Architecture: i386
Source: pulseaudio
Version: 1:0.9.14-0ubuntu20
Depends: libavahi-client3 (>= 0.6.16), libavahi-common3 (>= 0.6.16), libc6 (>= 2.4), libcap2 (>= 2.11), libgdbm3, libice6 (>= 1:1.0.0), libpulse0 (>= 0.9.14), libsm6, libx11-6
Filename: pool/main/p/pulseaudio/libpulse-browse0_0.9.14-0ubuntu20_i386.deb
Size: 31516
MD5sum: 63d4937b22f83cff5cc5be101caa3f27
SHA1: bb436fa7bc14eaad31a9f3778f1a887d96e2521d
SHA256: 1f3a5e7a4376c0ee406f30a1c5ec03dc5f484dc059ceb61462516bb728c6c1c5
Description: PulseAudio client libraries (zeroconf support)
PulseAudio, previously known as Polypaudio, is a sound server for POSIX and
WIN32 systems. It is a drop in replacement for the ESD sound server with
much better latency, mixing/re-sampling quality and overall architecture.
.
Client libraries used by applications that access a PulseAudio sound server
via PulseAudio's native interface.
.
This package adds support for zeroconf (aka. Avahi, mdns) discovery of
PulseAudio sinks and sources by client applications.
Homepage: http://www.pulseaudio.org
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Task: ubuntu-desktop, kubuntu-dvd-live, edubuntu-desktop, xubuntu-live, mobile-mid, mobile-netbook-remix
只需检查可用的其他版本，然后执行：
apt-get install packagname=version
再次以上述输出为例：
apt-get install ibpulse-browse0=1:0.9.14-0ubuntu20
如您所见，我的pulseaudio来自启动板上的ppa，因此，如果我想降级/还原为jaunty提供的原始版本，我将使用安装的所有pulseaudio软件包进行上述操作。
次佳答案
在/etc/apt/preferences中：
Package: *
Pin: release a=jaunty
Pin-Priority: 1001
然后是aptitude install pulseaudio(以及任何不会因依赖关系而自动降级的其他程序包)。
这很可能会引起问题(不正式支持降级或well-tested)，但这至少会使版本简化。