无法启动插孔（无法分配内存）

Question

我想在插孔顶部使用 PulseAudio，所以我已经关闭了脉冲，现在想使用qjackctl. 但是，这会导致以下错误日志：

22:14:15.933 Patch Panel disabled
22:14:15.940 Reset statistics.
22:14:15.953 Changed ASLA connection.
22:14:15.970 D-BUS: Service available (org.jackaudio.service aka jackdbus).
Cannot connect to server socket err = File or directory not found
Cannot connect to server socket
jack server is not running or cannot be started
22:14:15.980 Updated visualization of ASLA connections
22:14:18.147 D-BUS: Unable to start JACK server
Cannot connect to server socket err = File or directory not found
Cannot connect to server socket
jack server is not running or cannot be started
Fri Jul 20 22:14:18 2012: Starting jack server...
Fri Jul 20 22:14:18 2012: JACK server starting in realtime mode with priority 10
Fri Jul 20 22:14:18 2012: [1m[31mERROR: Cannot lock down 82246176 byte memory area (Cannot allocate memory)[0m
Fri Jul 20 22:14:18 2012: control device hw:0
Fri Jul 20 22:14:18 2012: control device hw:0
Fri Jul 20 22:14:18 2012: [1m[31mERROR: Failed to acquire device name : Audio0 error : Cannot allocate memory[0m
Fri Jul 20 22:14:18 2012: [1m[31mERROR: Audio device hw:0 cannot be acquired...[0m
Fri Jul 20 22:14:18 2012: [1m[31mERROR: Cannot initialize driver[0m
Fri Jul 20 22:14:18 2012: [1m[31mERROR: JackServer::Open() failed with -1[0m
Fri Jul 20 22:14:18 2012: [1m[31mERROR: Failed to open server[0m
Fri Jul 20 22:14:19 2012: Saving settings to "/home/jan/.config/jack/conf.xml" ...
22:14:24.418 Cannot connect to JACK server as client - connection failed. See message dialog for details.
Cannot connect to server socket err = File or directory not found
Cannot connect to server socket
jack server is not running or cannot be started

（有几条信息是德文的，我尽力翻译了）

pulseaudio 进程肯定没有运行。

我使用带有 NVIDIA 声卡的 Ubuntu 12.04 64 位。

Answer 1

好的，明白了：我必须将自己添加到组中audio：

usermod -a -G audio theusername

组成员身份仅在登录时更新，因此您需要注销并再次登录（或只是重新启动）。