Hi Richard, I'm glad you have paid attention to this problem.
A few weeks ago I've upgraded my Ubuntu version from 14.04 to 16.04 and faced with this issue. Now every time before connecting my USB sound-card I have to kill the 'fwupd' process.
Here is output from the 'dfu-tool list' command:
- When 'fwupd' is running:
Found 1397:0501 [v1.0]:
Status: cannot get device state: transfer failed
- After killing 'fwupd' and replugging sound-card:
Found 1397:0501 [v1.0]:
Mode: runtime
Status: OK
State: appIDLE
ID: 0
Cipher: none
Region 0x00: Zone:0, Sec#:0, Addr:0x00000000, Size:0x0000, Caps:0x3
The 'fwupd' process itself using 1.2 - 1.8 % of CPU (model name: Intel(R) Core(TM) i3 CPU M370 @2.40GHz).
Also please check the attachments: lsusb (with connected working/not-working sound-card) and fwupd verbose output (started with working sound-card/connecting sound-card when 'fwupd' running) diffs. Hope this will help.
Hi Richard, I'm glad you have paid attention to this problem.
A few weeks ago I've upgraded my Ubuntu version from 14.04 to 16.04 and faced with this issue. Now every time before connecting my USB sound-card I have to kill the 'fwupd' process.
Here is output from the 'dfu-tool list' command:
- When 'fwupd' is running:
Found 1397:0501 [v1.0]:
Status: cannot get device state: transfer failed
- After killing 'fwupd' and replugging sound-card:
Found 1397:0501 [v1.0]:
Mode: runtime
Status: OK
State: appIDLE
ID: 0
Cipher: none
Region 0x00: Zone:0, Sec#:0, Addr:0x00000000, Size:0x0000, Caps:0x3
The 'fwupd' process itself using 1.2 - 1.8 % of CPU (model name: Intel(R) Core(TM) i3 CPU M370 @2.40GHz). connecting sound-card when 'fwupd' running) diffs. Hope this will help.
Also please check the attachments: lsusb (with connected working/not-working sound-card) and fwupd verbose output (started with working sound-card/