Using the same account, running qjackctl w/ remote X display set to my computer causes my X/Gnome GUI to "hang" until qjackctl is killed.
qjackctl runs fine on my computer and also runs fine from my account on my son's computer.
Although the hardware on the computers is different (Opteron 1220 vs PhenomII 965, difft mobos) the "music" hardware controlled by jack is the same -- M-audio delta-66 and an Emagic MT4 USB midi box.
The debugging I've done so far indicates the lockup is caused by dbus. The problem is, I can't even change parameters in qjackctl on my son's account, because bringing up qjackctl locks up the computer. Are there any other files I should consider resetting -- given that, for the same computer, my config files "work" whereas his account results in a instant lockup on use of qjackctl.
Where does qjackctl store it's setup? Any suggestions on what config-files I can hand-edit to get things working again for his music-making? I'm considering reverting to the previous kernel to see if that's what caused the breakage. This worked fine prior to updates done recently, including a new kernel update.
PS: I did notice some oddities with this new kernel. For example, one time on my box, my Emagic MT4 usb midi started up with a different set of lights on than usual, and never actually went into "USB" mode. Unplugging and replugging got it recognized, and likewise rebooting again -- worked fine. This has not happened prior to update to one of these kernels: http://koji.fedoraproject.org/koji/search?terms=kernel-2.6.32.11-99.fc12&type=build&match=glob http://koji.fedoraproject.org/koji/search?terms=kernel-2.6.32.10-92.fc12&type=build&match=glob http://koji.fedoraproject.org/koji/search?terms=kernel-2.6.32.10-90.fc12&type=build&match=glob
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