Studio controls hangs on Apply

[Christopher Charles Erswell]

To reproduce:

1. Go to Extra Devices tab.

2. Select 'Nvidia 0,0 capture and playback 0' in Select Device to Edit drop down menu.

3. Click on Capture Port Count minus button to reduce it 0. This causes Studio Controls to hang. The plus and minus boxes are greyed out.

[A workaround is to restart Studio Controls which makes the plus and minus buttons available again but this time click on the All/Off toggle. This reduces the capture port count to 0. Then click on Apply Audio Settings].

Traceback (most recent call last):
File "/usr/bin/studio-controls", line 1039, in xdev_changed
sub_db['rate'] = int(self.xdev_rate_drop.get_active_id())
TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: studio-controls 2.2.6-0ubuntu1
ProcVersionSignature: Ubuntu 5.13.0-16.16-lowlatency 5.13.13
Uname: Linux 5.13.0-16-lowlatency x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu70
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Sat Oct 9 18:57:30 2021
InstallationDate: Installed on 2021-10-07 (2 days ago)
InstallationMedia: Ubuntu-Studio 21.10 "Impish Indri" - Beta amd64 (20210923)
PackageArchitecture: all
SourcePackage: studio-controls
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

This bug was fixed in the package studio-controls - 2.2.7-0ubuntu1

---------------
studio-controls (2.2.7-0ubuntu1) impish; urgency=medium

  [ Erich Eickmeyer ]
  * New upstream bugfix release 2.2.7

  [ Len Ovens ]
  * Set device rates properly (LP: #1946572)

 -- Erich Eickmeyer <email address hidden> Sun, 10 Oct 2021 14:55:20 -0700