<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - power on / plugging in E-MU 0202 USB hangs up pulseaudio and USB bus" href="https://bugs.freedesktop.org/show_bug.cgi?id=106557#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - power on / plugging in E-MU 0202 USB hangs up pulseaudio and USB bus" href="https://bugs.freedesktop.org/show_bug.cgi?id=106557">bug 106557</a> from <a class="email" href="mailto:f3flight@gmail.com" title="Dmitrii Sutiagin <f3flight@gmail.com>"> Dmitrii Sutiagin</a> <pre>Tanu, thank you for the recommendations. While following the steps, the gdm masking part did not give intended result: [dsutyagin@pulsar ~]$ sudo ps -ef | grep [p]ulse gdm 779 722 0 11:22 ? 00:00:00 /usr/bin/pulseaudio --daemonize=no dsutyag+ 1018 905 0 11:22 ? 00:00:06 /usr/bin/pulseaudio --daemonize=no [dsutyagin@pulsar ~]$ sudo -u gdm bash [gdm@pulsar dsutyagin]$ XDG_RUNTIME_DIR=/run/user/$UID systemctl --user --now mask pulseaudio.service pulseaudio.socket Created symlink /var/lib/gdm/.config/systemd/user/pulseaudio.service → /dev/null. Created symlink /var/lib/gdm/.config/systemd/user/pulseaudio.socket → /dev/null. [gdm@pulsar dsutyagin]$ exit [dsutyagin@pulsar ~]$ systemctl --user --now mask pulseaudio.service pulseaudio.socket Created symlink /home/dsutyagin/.config/systemd/user/pulseaudio.service → /dev/null. Created symlink /home/dsutyagin/.config/systemd/user/pulseaudio.socket → /dev/null. [dsutyagin@pulsar ~]$ ps -ef | grep [p]ulse gdm 2586 1 0 11:42 ? 00:00:00 /usr/bin/pulseaudio --start --log-target=syslog [dsutyagin@pulsar ~]$ sudo killall pulseaudio [dsutyagin@pulsar ~]$ ps -ef | grep [p]ulse gdm 2603 1 0 11:42 ? 00:00:00 /usr/bin/pulseaudio --start --log-target=syslog ...So I used this trick: [dsutyagin@pulsar ~]$ sudo chmod -x /usr/bin/pulseaudio [dsutyagin@pulsar ~]$ sudo killall pulseaudio [dsutyagin@pulsar ~]$ sudo chmod +x /usr/bin/pulseaudio [dsutyagin@pulsar ~]$ ps -ef | grep [p]ulse [dsutyagin@pulsar ~]$ Regarding the log... This is getting very interesting. The issue is not consistent depending on how I reproduce it. I got at least 3 different behaviors when testing with different combinations of pulseaudio running/not running/ and debug foreground mode vs systemd mode: 1. it doesn't work as before, log example can be found here - <a href="https://pastebin.com/4en37K3L">https://pastebin.com/4en37K3L</a> # this is usually the result when I just plug in the card while it's on (it's hardware switch) 2. it works, log example here - <a href="https://pastebin.com/0xQRWmNk">https://pastebin.com/0xQRWmNk</a> # this I got when 1 pulseaudio running (with -vv) and I plugged in the card while it was "off" (it has a hardware switch on it's front, integrated into volume knob) and then turned the card on via the knob. 3. it glitches like hell, the card gets reset several times, then pause, then again reset several times - I can hear clicks in headphones and kernel usb log repeats each time as if I just plugged the card in. Log here (only journalctl, failed to capture pulseaudio) - <a href="https://pastebin.com/Y5Ng2Fbs">https://pastebin.com/Y5Ng2Fbs</a> # This happened with 2 pulseaudio running and using a knob to turn the card on. To conclude, so far it looks like if I have 1 or 0 pulseaudio running and use the knob, it usually works, all other scenarios usually lead to the issue in it's now 2 different forms. I'll play a bit more with this and let know if I find any specific behaviors. To me this looks like a race between pulseaudio and kernel or system. Maybe related to systemd-udevd calling alsactl so early, or upowerd notices about unhandled action... Both of these do happen even when the card works, but maybe the timing between this and pulseaudio is important. And with 2 pulseaudio the chances of success are less, which is also in indicator of race.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>