System hangs on PandaBoard ES

[Stefan Arentz]

The last thing I see on the serial console is this:

... more of the same messages about omap-hdmi-audio-dai omap-hdmi-audio-dai ...
[ 388.953765] omap-hdmi-audio-dai omap-hdmi-audio-dai: >audio not supported
[ 388.960937] omap-hdmi-audio-dai omap-hdmi-audio-dai: >can't open interface omap-hdmi-audio-dai: -19
[ 3775.478820] logitech-djreceiver 0003:046D:C52B.0005: >can't reset device, ehci-omap.0-1.2.4/input2, status -71
[ 3775.493988] usb 1-1.2: >clear tt 1 (0060) error -71
[ 3775.499755] hid-generic 0003:04D9:4250.0001: >can't reset device, ehci-omap.0-1.2.1/input0, status -71
[ 3775.514007] usb 1-1.2: >clear tt 1 (0050) error -71
[ 3775.519836] logitech-djreceiver 0003:046D:C52B.0005: >can't reset device, ehci-omap.0-1.2.4/input2, status -71
[ 3775.534393] usb 1-1.2: >clear tt 1 (0060) error -71
[ 3775.539825] hid-generic 0003:04D9:4250.0002: >can't reset device, ehci-omap.0-1.2.1/input1, status -71
[ 3775.553955] logitech-djreceiver 0003:046D:C52B.0005: >can't reset device, ehci-omap.0-1.2.4/input2, status -71
[ 3775.564758] usb 1-1.2: >clear tt 1 (0050) error -71
[ 3775.574401] hid-generic 0003:04D9:4250.0001: >can't reset device, ehci-omap.0-1.2.1/input0, status -71
[ 3775.584442] usb 1-1.2: >clear tt 1 (0060) error -71
[ 3775.594024] logitech-djreceiver 0003:046D:C52B.0005: >can't reset device, ehci-omap.0-1.2.4/input2, status -71
[ 3775.604797] usb 1-1.2: >clear tt 1 (0050) error -71
[ 3775.610076] usb 1-1.2: >clear tt 1 (0060) error -19
[ 3775.619262] hid-generic 0003:04D9:4250.0002: >can't reset device, ehci-omap.0-1.2.1/input1, status -71
[ 3775.629302] usb 1-1.2: >clear tt 1 (0050) error -19
[ 3775.638610] hid-generic 0003:04D9:4250.0001: >can't reset device, ehci-omap.0-1.2.1/input0, status -71
[ 3775.648651] usb 1-1.2: >clear tt 1 (0050) error -19

The audio errors happen earlier and are probably not relevant.

The logitech-djreceiver could be my wireless mouse. I did unplug my keyboard from the PandaBoard earlier, which has a USB HUB and also a little Logitech receiver. Maybe this is a red herring.

What else can I report to give more details? Is there a way to break the kernel and find out where it is hanging? I'm willing to do some debugging.

[Stefan Arentz (stefan-arentz-ca)]

This is what my USB setup looks like:

stefan@pandaboard:~$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-omap3/3p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-omap/3p, 480M
    |__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/5p, 480M
        |__ Port 1: Dev 3, If 0, Class=vend., Driver=smsc95xx, 480M
        |__ Port 2: Dev 5, If 0, Class=hub, Driver=hub/4p, 480M
            |__ Port 1: Dev 6, If 0, Class=HID, Driver=usbhid, 1.5M
            |__ Port 1: Dev 6, If 1, Class=HID, Driver=usbhid, 1.5M
            |__ Port 4: Dev 7, If 0, Class=HID, Driver=usbhid, 12M
            |__ Port 4: Dev 7, If 1, Class=HID, Driver=usbhid, 12M
            |__ Port 4: Dev 7, If 2, Class=HID, Driver=usbhid, 12M
        |__ Port 3: Dev 4, If 0, Class=stor., Driver=usb-storage, 480M

[Stefan Arentz (stefan-arentz-ca)]

The USB thing might be a red herring. I just unplugged my keyboard/hub and wireless mouse receiver and I immediately see the messages from my first message. The system still works fine though. I can remote login and the clock is ticking on the screen.

[Paolo Pisati (p-pisati)]

do you have serial access to the board? and what did you do to trigger the hang?

[Stefan Arentz (stefan-arentz-ca)]

I do have serial access to the board. The kernel output that I posted earlier is all from the serial console.

I did not do anything specifically to trigger it. I basically let my PandaBoard idle for a while and then it usually hangs.

Right now it is hanging after I did the following:

Booted up, logged in.
Unplugged my keyboard + wireless mouse dongle
Switched my display from HDMI (PandaBoard) to DVI (my other machine)

... wait a day ...

Switched the display to HDMI
What I see now is Xscreensaver, but it hangs
PandaBoard is also not pingable
Nothing on Serial Console

Is there anything I can enable to get more diagnostic output on the serial port?