Avalon hash rate keeps resetting, USB hub issues?

[TwinTurbo]

Hi All,

So I am seeing this appear over and over in the System Log, but my other Avalon boxes have no such problem:

Sun Aug 18 11:48:49 2013 auth.info kernel: [  558.900000] usb 1-1: USB disconnect, device number 36
Sun Aug 18 11:48:49 2013 auth.info kernel: [  558.910000] usb 1-1.1: USB disconnect, device number 37
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.210000] usb 1-1: new high-speed USB device number 38 using ehci-platform
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.380000] hub 1-1:1.0: USB hub found
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.380000] hub 1-1:1.0: 2 ports detected
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.660000] usb 1-1.1: new full-speed USB device number 39 using ehci-platform
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.810000] ftdi_sio 1-1.1:1.0: FTDI USB Serial Device converter detected
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.820000] usb 1-1.1: Detected FT232RL
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.820000] usb 1-1.1: Number of endpoints 2
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.820000] usb 1-1.1: Endpoint 1 MaxPacketSize 16384
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.830000] usb 1-1.1: Endpoint 2 MaxPacketSize 16384
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.830000] usb 1-1.1: Setting MaxPacketSize 64
Sun Aug 18 11:48:50 2013 auth.info kernel: [  559.840000] usb 1-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
Sun Aug 18 11:48:51 2013 auth.info kernel: [  560.970000] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
Sun Aug 18 11:48:51 2013 auth.info kernel: [  560.990000] ftdi_sio 1-1.1:1.0: device disconnected
Sun Aug 18 11:49:12 2013 auth.info kernel: [  581.570000] usb 1-1: USB disconnect, device number 38
Sun Aug 18 11:49:12 2013 auth.info kernel: [  581.570000] usb 1-1.1: USB disconnect, device number 39
Sun Aug 18 11:49:12 2013 auth.info kernel: [  581.880000] usb 1-1: new high-speed USB device number 40 using ehci-platform
Sun Aug 18 11:49:12 2013 auth.info kernel: [  582.050000] hub 1-1:1.0: USB hub found
Sun Aug 18 11:49:12 2013 auth.info kernel: [  582.050000] hub 1-1:1.0: 2 ports detected

I noticed that my box's hash rate started resetting to 0 MH/s and then climbing back up to 70 or so. It did this once before right when I first got my Avalon and I couldn't figure out why. I moved the box around a bit and the issue went away ever since.

Fast forward a month: I had to re-arrange some hardware recently and my Avalon ran fine for a day, then stopped hashing last night. I restarted it and then it ran fine for several hours. When I log in, I see the above in the logs, the 5 second average hash rate climbs up to the 70 or so GH/s then resets to 0 and repeats.

It seems to me that maybe I have a bad hub connection judging by the logs. Currently I have it set to run at 300 MHz, but it has no problems hitting 345 MHz and ran for a month just fine before I moved it around. WiFi is disabled, etc.

Anyone else experienced problems like this? How did you resolve it?

[1714963662]

1714963662

[1714963662]

1714963662

[1714963662]

1714963662

[mrmerlin25]

I have the same appearing in my logs 4 module batch 3

[123041.660000] usb 1-1: USB disconnect, device number 12
[123041.670000] usb 1-1.1: USB disconnect, device number 13
[123041.980000] usb 1-1: new high-speed USB device number 14 using ehci-platform
[123042.140000] hub 1-1:1.0: USB hub found
[123042.140000] hub 1-1:1.0: 2 ports detected
[123042.420000] usb 1-1.1: new full-speed USB device number 15 using ehci-platform
[123042.560000] ftdi_sio 1-1.1:1.0: FTDI USB Serial Device converter detected
[123042.560000] usb 1-1.1: Detected FT232RL
[123042.570000] usb 1-1.1: Number of endpoints 2
[123042.570000] usb 1-1.1: Endpoint 1 MaxPacketSize 16384
[123042.580000] usb 1-1.1: Endpoint 2 MaxPacketSize 16384
[123042.580000] usb 1-1.1: Setting MaxPacketSize 64
[123042.590000] usb 1-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
[123042.820000] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[123042.840000] ftdi_sio 1-1.1:1.0: device disconnected
[123325.160000] usb 1-1: USB disconnect, device number 14
[123325.170000] usb 1-1.1: USB disconnect, device number 15
[123325.480000] usb 1-1: new high-speed USB device number 16 using ehci-platform
[123325.640000] hub 1-1:1.0: USB hub found
[123325.640000] hub 1-1:1.0: 2 ports detected
[123325.920000] usb 1-1.1: new full-speed USB device number 17 using ehci-platform
[123326.060000] ftdi_sio 1-1.1:1.0: FTDI USB Serial Device converter detected
[123326.070000] usb 1-1.1: Detected FT232RL
[123326.070000] usb 1-1.1: Number of endpoints 2
[123326.070000] usb 1-1.1: Endpoint 1 MaxPacketSize 16384
[123326.080000] usb 1-1.1: Endpoint 2 MaxPacketSize 16384
[123326.080000] usb 1-1.1: Setting MaxPacketSize 64
[123326.090000] usb 1-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
[123329.220000] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[123329.220000] ftdi_sio 1-1.1:1.0: device disconnected

Not noticed this before in the logs and been running the machine for over a week so I'm not sure what's caused this to just start, I also have disabled wifi is it a case of a lose connection while doing cable management? What should I look at connection wise to make sure seems ok.

[mrmerlin25]

I have this as well did you guys ever get to the bottom of what the problem was?